All objects near the earths surface - regardless of size and weight - hhave the same force of gravityvacting on them.
a. true
b. false

If a simple machine reduces the strength of a force, what must be increased?

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.

What word chemical equation describes cavendish’s experiment with zinc?