question
a wave is reflected from a rigid support. the change in phase on reflection will be



 option 1)
 
 
 option 2)
 
 
 option 3)
 
 
 option 4)
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when a ray of light falls on a smooth and shiny surface, the whole of light is sent back in the same direction. it is called reflection. mirrors do not allow even a small amount of light to pass through them. mirrors show regular and complete reflection.when all the parallel rays reflected from a plane are not parallel, the reflection is diffused or irregular. this is not violation of law of reflection, the reason for diffused reflection is due to irregularities in the reflecting surface. if you do not need the "wave" contents for a further use, just drop out (k) from all its entries.
if you need it for a further use, initialize it as 
wave=zeros(3,numel(t));
before the loop and address it as wave(k,:) within the loop.
commands "stem" are definitely incorrect. if you want to see plots of the dependences on t, they should look something like stem(t,combined) or plot(t,combined), etc. however, the t range in the second version (0,3) is much wider than the one of the first version (0,0.01): consequently, such a graph will show much (hugely) more oscillations--you will probably see nothing but a unifromly painted square.
i do not see any need in the "nold on" and "hold off" commands in the both version. (a) g(x) is a horizontal translation of 2 units to the left then a reflection over the x-axis of f(x)
  

(b) h(x) is a horizontal translation of 3 units to the right then a vertical translation os 4 units up of graph of f(x). dear student,

atomic radii in general decreases left to right in a period and
increases down the group
order of atomic radii is p >s > c > n
decrease in atomic radii on moving from c to n and p to s in a
period is because as we move left to right in a period as the
number of electron increases the number of protons in the nucleus
also increases due to which the valance shell electron experience
greater effective nuclear charge ; therefore more strongly pulled
by the nucleus , thus decreasing their sizes shielding effect
decreases in the order s > p > d orbital electrons s orbital
electrons have greater shielding effect on the nucleus on moving
left to right in a period shielding effect is operable but is same
across a period, therefore here we consider only the increase in
the effective nuclear charge experienced by the valance shell
electrons

regards on sapling its

oxidation:
cu --> cu^2+ + 2e^-

reduction:
o\_2 + 4e^- -->2o^2- dear student,
kindly refer to the links given below for an answer to a similar
query :

https://www meritnation
com/ask-answer/question/graphically-representlongitudinal-wave-transverse-wave/sound/11089393


https://www meritnation
com/ask-answer/question/explain-briefly-about-longitudinal-wave-transverse/sound/9951933

hope this information will clear your doubts about topic
if you have any more doubts just ask here on the forum and our
experts will try to help you out as soon as possible

regards we are required to state the effect of one of the laws governing brightness. apparent brightness:b=l4πd2 where b is apparent brightness, l is intrinsic luminosity, and d is the distance from the source. [readmore]as the distance increases, the apparent brightness gets fainter as the distance from the source increases. the fainting brightness is accounted for by the spreading out of photons: as light travels away from its source, the photons get spread out over increasingly greater areas. the more the light is spread out, the fainter it appears in any given patch of area (for example, the small patch of the area covered by the opening in your eye)the correct choice is:d. far from the source, photons spread over a larger area. more like retain oxygen intake /efficiency. (a) f = 1/t = 2.11 hz

(b) 2*pi*f = 13.26 radians/s = sqrt(k/m)
m = 0.296 kg
solve for k
(c) (1/2)ka^2 = 0.150 j
solve for amplitude a, in meters you should have three choices.

 thanks for the update...i'll check it out.