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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
Explain the Optical Instruments? The lenses you use most often are the ones in your eyes. The front of your eye has a convex lens whose focal length can be changed by the muscl
MOTION: A body is said to be in motion if it alters its position with respect to its surroundings.
Q Give the differences between AF choke and RF choke. Audio - frequency (A.F) chokes Radio frequency (R. F) chokes: or high frequency (H.F) chokes
When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 7.5 km/s and the secondary, or S, wave
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Deduce an expression for the electric potential because of an electric dipole at any point on its axis. Mention one contrasting feature of electric potential of a dipole at a point
what is cruisiing mean
Artificial satellites 1. Satellites help to develop reliable communication links between different countries separated by large distances on the globe. The communications inclu
Why there are two propellers in helicopter
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