Physics, 07.03.2020 02:50 kathleenirwin
The intensity of a wave may be defined as the power transmitted per unit cross-sectional area at right angles to the direction of travel. For a point source of light, explain why the intensity I at a distance r away from the source obeys an inverse square law with distance, that is:
Answers: 2
Physics, 22.06.2019 12:10, lks715
Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)
Answers: 3
Physics, 22.06.2019 15:20, alissalhenry
Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.
Answers: 3
The intensity of a wave may be defined as the power transmitted per unit cross-sectional area at rig...
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