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NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DQ_011239 | image | question_images/circuits_1052.png | circuits_1052.png | 0.31314 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DQ_011313 | image | question_images/circuits_1574.png | circuits_1574.png | 0.312301 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DQ_011273 | image | question_images/circuits_1535.png | circuits_1535.png | 0.312231 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DQ_011340 | image | question_images/circuits_1616.png | circuits_1616.png | 0.302704 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DQ_011331 | image | question_images/circuits_1611.png | circuits_1611.png | 0.302495 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DD_0228 | image | teaching_images/circuits_1547.png | The diagram shows a parallel circuit with a battery and 4 resistors. A parallel circuit has two or more paths for current to flow through. All electric circuits have at least two parts: a voltage source and a conductor. The voltage source of the circuit in the diagram is a battery. Voltage is the same across each component of the parallel circuit. The conductor must form a closed loop from the source of voltage and back again. From the diagram, the wires are connected to both terminals of the battery, so they form a closed loop. The diagram also has 4 resistors, which can be any device (such as a lightbulb) that converts some of the electricity to other forms of energy. | 0.302074 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DQ_011259 | image | question_images/circuits_1063.png | circuits_1063.png | 0.301291 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DQ_011302 | image | question_images/circuits_1568.png | circuits_1568.png | 0.29847 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DQ_011360 | image | question_images/circuits_217.png | circuits_217.png | 0.296731 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | DQ_011392 | image | question_images/circuits_653.png | circuits_653.png | 0.29592 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_4844 | text | null | An electric circuit consists of at least one closed loop through which electric current can flow. Every circuit has a voltage source such as a battery and a conductor such as metal wire. A circuit may have other parts as well, such as lights and switches. In addition, a circuit may consist of one loop or two loops. | 0.741667 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_3871 | text | null | We use electricity for many purposes. Devices such as lights, stoves, and stereos all use electricity and convert it to energy in other forms. However, devices may vary in how quickly they change electricity to other forms of energy. | 0.716405 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_3874 | text | null | Electricity is dangerous. Contact with electric current can cause severe burns and even death. Electricity can also cause serious fires. A common cause of electric hazards and fires is a short circuit. | 0.694686 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_3801 | text | null | Although all electromagnetic waves travel at the same speed, they may differ in their wavelength and frequency. | 0.668275 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.665829 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_0726 | text | null | Nuclear energy is produced by splitting the nucleus of an atom. This releases a huge amount of energy. | 0.6626 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_4367 | text | null | Electricity originates in power plants. They have electric generators that produce electricity by electromagnetic induction. In this process, a changing magnetic field is used to generate electric current. The generators convert kinetic energy to electrical energy. The kinetic energy may come from flowing water, burning fuel, wind, or some other energy source. | 0.660983 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_3860 | text | null | Electric current cannot travel through empty space. It needs a material through which to travel. However, when current travels through a material, the flowing electrons collide with particles of the material, and this creates resistance. | 0.658943 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_1447 | text | null | Minerals are divided into groups based on chemical composition. Most minerals fit into one of eight mineral groups. | 0.65166 |
NDQ_018416 | the wiring in a house consists of parallel circuits. | null | a. true, b. false | a | T_4343 | text | null | Electrical energy is transmitted by moving electrons in an electric current. In order to travel, electric current needs matter. It cannot pass through empty space. However, matter resists the flow of electric current. Thats because flowing electrons in current collide with particles of matter, which absorb their energy. Some types of matter offer more or less resistance to electric current than others. | 0.64927 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_3883 | image | textbook_images/magnets_and_magnetism_22485.png | FIGURE 24.2 The north and south poles of a bar magnet attract paper clips. | 0.374663 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | DQ_011474 | image | question_images/electromagnetism_9093.png | electromagnetism_9093.png | 0.3451 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_4382 | image | textbook_images/electromagnetic_waves_22803.png | FIGURE 1.1 | 0.342981 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | DD_0232 | image | teaching_images/electromagnetism_6802.png | In this diagram, a coil of insulated wire is wound around an iron nail. The wire from the nail is conneted directly to the positive terminal of a battery at one end, and through a switch to its negative terminal at the other. When the switch is thrown, the wire forms a complete circuit and an electric current flows from the negative terminal through the wire to the positive terminal. The current flowing through the wire produces a magnetic field resembling the field of a bar magnet with the poles alligned with the nail the wire is wrapped around. The iron the nail is made from is ferromagnetic, and the magentic feild generated by the current in the wire causes the magnetic domains in the iron to allign with it. This makes for a stronger magnetic field than the wire would generate on it's own. This combination of a wire coiled around a ferromgnetic material is called an electromagnet. | 0.333965 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_4858 | image | textbook_images/solenoid_23080.png | FIGURE 1.1 | 0.322624 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_3900 | image | textbook_images/using_electromagnetism_22505.png | FIGURE 25.6 An electromagnet uses a solenoid and an iron bar to create a very strong magnetic field. | 0.321118 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | DQ_011436 | image | question_images/earth_magnetic_field_6787.png | earth_magnetic_field_6787.png | 0.32052 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | DD_0233 | image | teaching_images/electromagnetism_9090.png | The diagram shows a simple way to make an iron nail become electromagnet. A wire is run from the positive side of a battery then coil around the nail then to the negative side of the battery. As electric current flows through the wire, magnetic field is produced around the coil of wire with the electric current. The coil of wire with electric current flowing through it is called a solenoid. The more turns the coil has, the strong the electromagnetic field will be. | 0.31948 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_3899 | image | textbook_images/using_electromagnetism_22504.png | FIGURE 25.5 How does a solenoid resemble a bar mag- net? | 0.318886 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_4441 | image | textbook_images/ferromagnetic_material_22840.png | FIGURE 1.3 A: Jarring or heating a magnet moves the magnetic domains out of alignment. When the magnetic domains no longer line up in the same direction, the material is no longer magnetic. | 0.31483 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_4327 | text | null | Imagine a huge bar magnet passing through Earths axis, as in the Figure 1.1. This is a good representation of Earth as a magnet. Like a bar magnet, Earth has north and south magnetic poles. A magnetic pole is the north or south end of a magnet, where the magnet exerts the most force. | 0.741108 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_4953 | text | null | Like a bar magnet, planet Earth has north and south magnetic poles and a magnetic field over which it exerts magnetic force. Earths magnetic field is called the magnetosphere. You can see it in the Figure 1.1. | 0.740479 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_3883 | text | null | A magnet is an object that attracts certain materials such as iron. Youre probably familiar with common bar magnets, like the one in Figure 24.2. Like all magnets, this bar magnet has north and south poles and attracts objects such as paper clips that contain iron. | 0.736389 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_3885 | text | null | The force that a magnet exerts on certain materials is called magnetic force. Like electric force, magnetic force is exerted over a distance and includes forces of attraction and repulsion. North and south poles of two magnets attract each other, while two north poles or two south poles repel each other. | 0.728889 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_4859 | text | null | A solenoid is generally used to convert electromagnetic energy into motion. Solenoids are often used in devices that need a sudden burst of power to move a specific part. In addition to paintball markers, you can find solenoids in machines ranging from motor vehicles to electric dishwashers. Another device that uses solenoids is pictured in the Figure 1.2. | 0.72644 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_3890 | text | null | Imagine a huge bar magnet passing through Earths axis, as illustrated in Figure 24.10. This is a good representation of Earth as a magnet. Like a bar magnet, Earth has north and south magnetic poles and a magnetic field. | 0.722925 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_3801 | text | null | Although all electromagnetic waves travel at the same speed, they may differ in their wavelength and frequency. | 0.711886 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_3907 | text | null | Two important devices depend on electromagnetic induction: electric generators and electric transformers. Both devices play critical roles in producing and regulating the electric current we depend on in our daily lives. | 0.683942 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_3860 | text | null | Electric current cannot travel through empty space. It needs a material through which to travel. However, when current travels through a material, the flowing electrons collide with particles of the material, and this creates resistance. | 0.674929 |
NDQ_018441 | a solenoid has a magnetic field like a bar magnet. | null | a. true, b. false | a | T_1114 | text | null | Earth is surrounded by a magnetic field (Figure 1.1) that behaves as if the planet had a gigantic bar magnet inside of it. Earths magnetic field also has a north and south pole. The magnetic field arises from the convection of molten iron and nickel metals in Earths liquid outer core. | 0.673274 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3906 | image | textbook_images/generating_and_using_electricity_22509.png | FIGURE 25.10 If a magnet is moved back and forth rela- tive to a coil of wire, alternating current is produced. | 0.3494 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_4377 | image | textbook_images/electromagnetic_induction_22801.png | FIGURE 1.2 | 0.34919 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | DQ_011474 | image | question_images/electromagnetism_9093.png | electromagnetism_9093.png | 0.332445 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_4377 | image | textbook_images/electromagnetic_induction_22800.png | FIGURE 1.1 | 0.329219 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3897 | image | textbook_images/electricity_and_magnetism_22501.png | FIGURE 25.2 In Oersteds investigation, the pointer of the magnet moved continuously as it circled the wire. | 0.32677 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | DD_0233 | image | teaching_images/electromagnetism_9090.png | The diagram shows a simple way to make an iron nail become electromagnet. A wire is run from the positive side of a battery then coil around the nail then to the negative side of the battery. As electric current flows through the wire, magnetic field is produced around the coil of wire with the electric current. The coil of wire with electric current flowing through it is called a solenoid. The more turns the coil has, the strong the electromagnetic field will be. | 0.320237 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | DD_0232 | image | teaching_images/electromagnetism_6802.png | In this diagram, a coil of insulated wire is wound around an iron nail. The wire from the nail is conneted directly to the positive terminal of a battery at one end, and through a switch to its negative terminal at the other. When the switch is thrown, the wire forms a complete circuit and an electric current flows from the negative terminal through the wire to the positive terminal. The current flowing through the wire produces a magnetic field resembling the field of a bar magnet with the poles alligned with the nail the wire is wrapped around. The iron the nail is made from is ferromagnetic, and the magentic feild generated by the current in the wire causes the magnetic domains in the iron to allign with it. This makes for a stronger magnetic field than the wire would generate on it's own. This combination of a wire coiled around a ferromgnetic material is called an electromagnet. | 0.316571 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3905 | image | textbook_images/generating_and_using_electricity_22508.png | FIGURE 25.9 This simple setup shows how electromagnetic induction occurs. | 0.316552 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_4858 | image | textbook_images/solenoid_23080.png | FIGURE 1.1 | 0.314049 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3900 | image | textbook_images/using_electromagnetism_22505.png | FIGURE 25.6 An electromagnet uses a solenoid and an iron bar to create a very strong magnetic field. | 0.312931 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3801 | text | null | Although all electromagnetic waves travel at the same speed, they may differ in their wavelength and frequency. | 0.733974 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3885 | text | null | The force that a magnet exerts on certain materials is called magnetic force. Like electric force, magnetic force is exerted over a distance and includes forces of attraction and repulsion. North and south poles of two magnets attract each other, while two north poles or two south poles repel each other. | 0.704989 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3907 | text | null | Two important devices depend on electromagnetic induction: electric generators and electric transformers. Both devices play critical roles in producing and regulating the electric current we depend on in our daily lives. | 0.693585 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_4953 | text | null | Like a bar magnet, planet Earth has north and south magnetic poles and a magnetic field over which it exerts magnetic force. Earths magnetic field is called the magnetosphere. You can see it in the Figure 1.1. | 0.683689 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3883 | text | null | A magnet is an object that attracts certain materials such as iron. Youre probably familiar with common bar magnets, like the one in Figure 24.2. Like all magnets, this bar magnet has north and south poles and attracts objects such as paper clips that contain iron. | 0.671872 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3860 | text | null | Electric current cannot travel through empty space. It needs a material through which to travel. However, when current travels through a material, the flowing electrons collide with particles of the material, and this creates resistance. | 0.671031 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_4327 | text | null | Imagine a huge bar magnet passing through Earths axis, as in the Figure 1.1. This is a good representation of Earth as a magnet. Like a bar magnet, Earth has north and south magnetic poles. A magnetic pole is the north or south end of a magnet, where the magnet exerts the most force. | 0.667037 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_4844 | text | null | An electric circuit consists of at least one closed loop through which electric current can flow. Every circuit has a voltage source such as a battery and a conductor such as metal wire. A circuit may have other parts as well, such as lights and switches. In addition, a circuit may consist of one loop or two loops. | 0.66361 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_3795 | text | null | As you can see in Figure 21.2, the electric and magnetic fields that make up an electromagnetic wave occur are at right angles to each other. Both fields are also at right angles to the direction that the wave travels. Therefore, an electromagnetic wave is a transverse wave. | 0.66104 |
NDQ_018443 | a straight wire has a stronger magnetic field than a coiled wire. | null | a. true, b. false | b | T_4367 | text | null | Electricity originates in power plants. They have electric generators that produce electricity by electromagnetic induction. In this process, a changing magnetic field is used to generate electric current. The generators convert kinetic energy to electrical energy. The kinetic energy may come from flowing water, burning fuel, wind, or some other energy source. | 0.653626 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_3653 | image | textbook_images/simple_machines_22325.png | FIGURE 16.20 Both a Ferris wheel and a car steering wheel have an outer wheel and an inner axle. | 0.25816 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | DQ_011483 | image | abc_question_images/states_of_matter_17618.png | states_of_matter_17618.png | 0.249066 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_3575 | image | textbook_images/what_is_force_22257.png | FIGURE 13.4 When unbalanced forces are applied to an object in opposite directions, the smaller force is subtracted from the larger force to yield the net force. | 0.247398 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | DQ_011488 | image | abc_question_images/states_of_matter_19252.png | states_of_matter_19252.png | 0.243134 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | DQ_003862 | image | question_images/parts_plant_1159.png | parts_plant_1159.png | 0.239124 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_3622 | image | textbook_images/pressure_of_fluids_22300.png | FIGURE 15.10 How does Bernoullis law explain each of these examples? | 0.239095 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | DQ_012024 | image | question_images/chemical_bonding_covalent_9052.png | chemical_bonding_covalent_9052.png | 0.237879 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | DQ_003874 | image | question_images/parts_plant_2.png | parts_plant_2.png | 0.237305 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_4042 | image | textbook_images/chemical_equations_22609.png | FIGURE 8.4 This figure shows a common chemical reaction. The drawing below the equation shows how the atoms are rearranged in the reaction. What chemical bonds are broken and what new chemical bonds are formed in this reaction? | 0.236612 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | DQ_012183 | image | question_images/optics_ray_diagrams_9174.png | optics_ray_diagrams_9174.png | 0.235753 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.597796 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_4421 | text | null | 1. What is the traditional definition of gravity? 2. Identify factors that influence the strength of gravity between two objects. | 0.592328 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_1106 | text | null | Despite these problems, there is a rich fossil record. How does an organism become fossilized? | 0.583275 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_0638 | text | null | To understand minerals, we must first understand matter. Matter is the substance that physical objects are made of. | 0.57822 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_4893 | text | null | A given kind of matter has the same chemical makeup and the same chemical properties regardless of its state. Thats because state of matter is a physical property. As a result, when matter changes state, it doesnt become a different kind of substance. For example, water is still water whether it exists as ice, liquid water, or water vapor. | 0.575078 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_3278 | text | null | What does population growth mean? You can probably guess that it means the number of individuals in a population is increasing. The population growth rate tells you how quickly a population is increasing or decreasing. What determines the population growth rate for a particular population? | 0.573117 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_1797 | text | null | The two types of air pollutants are primary pollutants, which enter the atmosphere directly, and secondary pollutants, which form from a chemical reaction. | 0.569702 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_1447 | text | null | Minerals are divided into groups based on chemical composition. Most minerals fit into one of eight mineral groups. | 0.569483 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_3941 | text | null | Why do different states of matter have different properties? Its because of differences in energy at the level of atoms and molecules, the tiny particles that make up matter. | 0.568288 |
NDQ_018444 | what explains the correct answer to question 5? | null | a. Each turn in a coil of wire has its own magnetic field., b. The magnetic field of a wire is weakened when the wire is coiled., c. Coiling a wire decreases the amount of current flowing through it., d. two or the above | a | T_2534 | text | null | Both types of reproduction have certain advantages. | 0.567051 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | DQ_011306 | image | question_images/circuits_1569.png | circuits_1569.png | 0.298938 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | DQ_011474 | image | question_images/electromagnetism_9093.png | electromagnetism_9093.png | 0.297287 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | DD_0232 | image | teaching_images/electromagnetism_6802.png | In this diagram, a coil of insulated wire is wound around an iron nail. The wire from the nail is conneted directly to the positive terminal of a battery at one end, and through a switch to its negative terminal at the other. When the switch is thrown, the wire forms a complete circuit and an electric current flows from the negative terminal through the wire to the positive terminal. The current flowing through the wire produces a magnetic field resembling the field of a bar magnet with the poles alligned with the nail the wire is wrapped around. The iron the nail is made from is ferromagnetic, and the magentic feild generated by the current in the wire causes the magnetic domains in the iron to allign with it. This makes for a stronger magnetic field than the wire would generate on it's own. This combination of a wire coiled around a ferromgnetic material is called an electromagnet. | 0.292124 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_3985 | image | textbook_images/history_of_the_atom_22567.png | FIGURE 5.10 This sketch shows the basic set up of Thomsons experiments. The vacuum tube is a glass tube that contains very little air. It has metal plates at each end and along the sides. | 0.287981 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | DD_0229 | image | teaching_images/circuits_224.png | This diagram shows an open circuit. It consists of a bulb, a battery and wires connecting the bulb to the battery. The battery has two terminals, a positive and a negative terminal. A and B are the ends of the wire. In this diagram, A and B are not connected to each other. Hence the circuit is called an open circuit. Electric current cannot flow through an open circuit. Hence the bulb will not light up. If the ends of the wires, A and B were connected to each other, the circuit would be known as a closed circuit. Electric current would flow through this closed circuit which would lead the bulb to be lit. | 0.284391 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_3900 | image | textbook_images/using_electromagnetism_22505.png | FIGURE 25.6 An electromagnet uses a solenoid and an iron bar to create a very strong magnetic field. | 0.281691 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | DD_0233 | image | teaching_images/electromagnetism_9090.png | The diagram shows a simple way to make an iron nail become electromagnet. A wire is run from the positive side of a battery then coil around the nail then to the negative side of the battery. As electric current flows through the wire, magnetic field is produced around the coil of wire with the electric current. The coil of wire with electric current flowing through it is called a solenoid. The more turns the coil has, the strong the electromagnetic field will be. | 0.281185 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_4372 | image | textbook_images/electromagnet_22797.png | FIGURE 1.1 | 0.280852 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | DQ_011455 | image | question_images/electromagnetism_6797.png | electromagnetism_6797.png | 0.279604 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | DQ_010661 | image | abc_question_images/nuclear_energy_17095.png | nuclear_energy_17095.png | 0.27744 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_4859 | text | null | A solenoid is generally used to convert electromagnetic energy into motion. Solenoids are often used in devices that need a sudden burst of power to move a specific part. In addition to paintball markers, you can find solenoids in machines ranging from motor vehicles to electric dishwashers. Another device that uses solenoids is pictured in the Figure 1.2. | 0.738475 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_4844 | text | null | An electric circuit consists of at least one closed loop through which electric current can flow. Every circuit has a voltage source such as a battery and a conductor such as metal wire. A circuit may have other parts as well, such as lights and switches. In addition, a circuit may consist of one loop or two loops. | 0.658978 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_3907 | text | null | Two important devices depend on electromagnetic induction: electric generators and electric transformers. Both devices play critical roles in producing and regulating the electric current we depend on in our daily lives. | 0.656691 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_3801 | text | null | Although all electromagnetic waves travel at the same speed, they may differ in their wavelength and frequency. | 0.607899 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_4367 | text | null | Electricity originates in power plants. They have electric generators that produce electricity by electromagnetic induction. In this process, a changing magnetic field is used to generate electric current. The generators convert kinetic energy to electrical energy. The kinetic energy may come from flowing water, burning fuel, wind, or some other energy source. | 0.599438 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_3871 | text | null | We use electricity for many purposes. Devices such as lights, stoves, and stereos all use electricity and convert it to energy in other forms. However, devices may vary in how quickly they change electricity to other forms of energy. | 0.599252 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_4438 | text | null | A combustion engine is a complex machine that burns fuel to produce thermal energy and then uses the thermal energy to do work. There are two types of combustion engines: external and internal. A steam engine is an external combustion engine. | 0.596674 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_1797 | text | null | The two types of air pollutants are primary pollutants, which enter the atmosphere directly, and secondary pollutants, which form from a chemical reaction. | 0.595367 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_3883 | text | null | A magnet is an object that attracts certain materials such as iron. Youre probably familiar with common bar magnets, like the one in Figure 24.2. Like all magnets, this bar magnet has north and south poles and attracts objects such as paper clips that contain iron. | 0.591764 |
NDQ_018446 | solenoids are used in | null | a. paintball markers., b. motor vehicles., c. electric dishwashers., d. all of the above | d | T_4953 | text | null | Like a bar magnet, planet Earth has north and south magnetic poles and a magnetic field over which it exerts magnetic force. Earths magnetic field is called the magnetosphere. You can see it in the Figure 1.1. | 0.591336 |
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