In the vicinity of what frequency does an object with a temperature of 2000 K radiate the largest amount of power? (c = 3.00 × 108 m/s, Wien displacement law constant equals 2.90 × 10-3 m · K, σ = 5.670 × 10-8 W/m2 · K4)

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.