The shelf s hangs from the ceiling by two ropes 1 and 2 a block of cheese b rests on the shelf. What is the correct free body diagram for the shelf s A Ft1 Ft,2 F g, s Fn g, b

B ft1 ft2 gs fn

C t1 ft2 f g b

D f n f g s

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?

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?

In what direction does an applied force move an object