Exam 2 Preparation Deadline:100% until Thursday, October 21 at 8:00 AM Falling to the Earth 12 An object is released from rest high above the surface of the earth. When it has fallen halfway to the surface, its kinetic energy is . After it has fallen twice as far, just before it hits the surface of the earth, its kinetic energy is . 1) How does compare to twice

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?

The mini-refrigerator fire was most likely caused by what type of wiring?

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?