Physics, 18.01.2020 05:31, captaincluck52
When an average force f is exerted over a certain distance on a shopping cart of mass m, its kinetic energy increases by 12mv2. a) use the work-energy theorem to find the distance over which the force acts. b) if twice the force is exerted over twice the distance, how does the resulting increase in kinetic energy compare with the original increase in kinetic energy?
Answers: 3
Physics, 21.06.2019 20:20, jacesmokesloud7254
Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?
Answers: 2
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