The depth of a pond is 1.5m. Calculate the pressure caused by the water at the bottom of the pond ??

How much heat is required to convert 0.3 kg of ice at 0°c to water at the same temperature

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

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.