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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
Figure shows the magnetic circuit of a relay. When each of the air gaps are 1.5mm wide find the mmf required to produce a flux density of 0.75 T in the air gaps. Use the B-H cu
What is the meaning of Refraction? Waves that do not reflect back from a boundary but travel into the new medium instead are said to refract. In one dimension, the wave just mo
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the quantum no having non integral value is ? what does it designate
ACCELERATION DUE TO GRAVITY. In the absence of air resistance, all objects in free fall near the surface of the earth move in the direction of the earth with a uniform accelera
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Making a simple reflecting telescope A simple reflecting telescope can be made from a concave mirror obtain from a shaving mirror. The mirror is arranged wooden box of suitable
#questionMnS is a paramagnetic solid. At 300°K, there are 4 × 1022 molecules of MnS per cm3. If the cationic magnetic moment of MnS is 5 MB, use the Curie law in 8-b to compute the
Organic & polymer solar cells are made from thin films (typically 100nm) of organic semiconductor such as polymer and small molecule compounds like poly phenylene vinylene, copper
how to prepare a working model on electromagnetic induction?
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