physics
please help !

a child throws a snowball at a tree and it sticks to the tree. does this motion defy the law of conservation of momentum? explain.

the law of conservation of energy states: "if there is no net force acting on a system of objects, the total momentum in that system before a collision is equal to the total momentum in the system after the collision."

how can i use this to explain how the aforementioned situation does not defy the law. maybe help by explaining where the momentum would go given that p=mv and neither object is changing mass, but they are both coming to a rest.
'no' is the answer to your first paragraph question. the tree moves slightly after being hit, thus conserving momentum. the tree soon stops swaying and reverses direction due to forces applied to the roots by the soil.

your second paragraph does not correctly state the law of conservation of energy. you are talking about momentum conservation. in the case of the tree hit by the snowball, there is a net force applied to the system (at the tree's roots).
physics 101 notes: 8/25 (week 2 continued)  force o defined as a push or a pull, and is a vector quantity, meaning that it has direction depending on which way it is being pushed or pulled o it has amount and direction (how much force is being applied and in which direction it is moving)  newton’s first law o first draft: “an object that is free of forces move in a straight line and covers equal distances in equal time” o final: “an object that is free of external forces moves at a constant velocity”  how does a skater start, stop, or turn? o acceleration: “the rate at which an object’s velocity is changing with time o acceleration, s 1. according to kinetic theory of ideal gases, molecules of a gas are in incessant random motion, colliding against each other and with the walls of the container. all these collisions are perfectly elastic collision.2. in perfectly elastic collision, total kinetic energy of gas is conserved.3. here, we have a mixture of oxygen and hydrogen gas. thereforek.e of oxygen + k.e of hydrogen=constant4. so, if kinetic energy of oxygen molecules increases, then kinetic energy of hydrogen molecules decreases or vice-versa so that, sum of both kinetic energies remains constant.5. therefore, both option (c) and (d) are correct. hi,
all physical changes are not
reversible cutting of tree is an irreversible physical change
all chemical changes are not
necessarily irreversible

the reaction between hydrogen and oxygen to form water is an
example reversible chemical reaction the reaction can be
represented as:
h2 + 1/2 o2→ h2o we are asked to complete the sentence. [readmore]a law reliably predicts the behavior of matter, while a theory provides an explanation for that behavior. energy is a scalar quantity it doesn’t depend on an angle of projection; it depends only on the speed of projection, which is same for both cases.it is given that height reached by the first particle is greater than that of second and we know thattherefore θ1> θ2, now for time we know that it is directly proportional to angle therefore, t1>t2.for range we can’t be sure as for complementary angle they can be equal also. ?solution 1cq


here, when one spring is compressed, the other is stretched and the potential energy will be stored in the compressed spring and so the oscillation continues and then the other spring compresses and the process goes on considering the surface to be a frictionless surface. the oscillation goes on forever if there are no dissipative forces. yes. let us consider a block a which is resting on another block b. block b is resting on a smooth horizontal surface. let the coefficient of friction between the blocks be \[\mu\] . when a force f is applied on block b in the forward direction as shown in the above figure, block a moves with block b in the direction of the applied force. the frictional force on block a and the displacement will be in the forward direction. therefore, work done by the frictional force is positive. if we consider the reference frame of block b, then displacement of block a will be zero. therefore, work done by the frictional force is zero. coulomb's law:f=kq1q2r2, where k is the coulomb's constant and r is the separation between the two charges. the magnitude of the net force:fnet=fx2+fy2k = 9 × 109 n·m2/c2the force due to charge q1 is:f1a=kq1qar1a2=(9×109)(21.4×10-6)(13.5×10-6)(80.1×10-2)2[readmore]f1a = 4.05 nthe force due to charge, q2:f2a=kq2qar2a2=(9×109)(30.6×10-6)(13.5×10-6)[(80.1×10-2)2+(80.1×10-2)2]2f2a = 2.9 nforce due to charge, q3:f3a=kq3qar3a2=(9×109)(57.3×10-6)(13.5×10-6)(80.1×10-2)2f3a = 10.9 nthe net force along the x-axis:fx=f1a-f2acos(45°)=4.05-(2.9)cos(45°)fx = 2.0 nthe net force in the y-direction:fy=f3a-f2acos(45°)=10.9-(2.9)cos(45°)fy = 8.85 nthe magnitude of the net force:fnet=fx2+fy2=2.02+8.852fnet = 9.07 nthe magnitude of the net force on the charge at point a is 9.07 n. kindly refer the following link for similar query
https://www meritnation
com/ask-answer/question/why-does-a-ball-rolling-on-the-ground-in-a-straight-come/science/8033135 the “rule of law” states that everyone, regardless of any discrimination, is equal before the law. in an independent and democratic india, all citizens from a rickshaw puller to the prime minister are to be judged equally before the law if they violate it by committing a crime. every violation of a law or commitment of a criminal offense has a specific process to establish guilt and cite its punishment. the “rule of law” ensures that equality is maintained by passing the same judgment on a criminal regardless of his/her status or background.
violations of the “rule of law” are, sadly enough, aplenty in india. in our country, if one has power or “contacts” with influential people, then it is easy to get away with even gross violations of laws and rules. for example, most politicians today own property and wealth worth crores but they do not even file tax returns on the same. the assets they declare are probably not even half of what they originally own. however, an ordinary income tax official cannot dare to question them for fear of losing his job, because the former have “power” that this official does not possess.