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You watch a distant carpenter driving his nails into the side of a house at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the blows you see. You then hear one more blow after you see him stop hammering. How far away is he? Justify your ANSWER---BE BRIEF.
Solution1 : The information tells you that sound travels for one second before reaching you the actual distance will depend on temperature, since the speed of sound varies with temperature, at 20 deg C it is approx 343m/s, so if this is a nice spring day, you are 343m away
Energy that is radiated or transmitted in the form of rays or waves or particles.
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A 10 kilogram body initially moving with a velocity of 10 meters per second makes a head-on collision with a 15 kilogram body initially at rest. The two objects stick together. W
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calculate the frequency of radiation which must be incident on a substance placed in magnetic field strength so that the electron can absorb energy
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