# PHYSICS PLS HELP!!!?

1) If 100 g of water at 80oC is added to a 100 g steel cup at 20oC, the magnitude of the change in temperature of the water will be ____________ the magnitude of the change in temperature of the cup.

2)How much energy would need to be input to 10.0 kg of ice to turn it to water at 0.0oC, given a latent heat of fusion of 3.3 x 105 J/kg?

3)A solid copper ball with a mass of 1.0 kg and a temperature of 30°C is placed on a sheet of ice at 0°C. If 1.0 kg of water at the same temperature were poured on the ice, the water would melt _____ ice.

### 1 Answer

- FiremanLv 74 months ago
1) If 100 g of water at 80oC is added to a 100 g steel cup at 20oC, the magnitude of the change in temperature of the water will be _______Less than_____ the magnitude of the change in temperature of the cup.

2)How much energy would need to be input to 10.0 kg of ice to turn it to water at 0.0oC, given a latent heat of fusion of 3.3 x 105 J/kg?

Ans: Q = ML = 10 x 3.3 x 10^5 = 3.3 x 10^6 J

3)A solid copper ball with a mass of 1.0 kg and a temperature of 30°C is placed on a sheet of ice at 0°C. If 1.0 kg of water at the same temperature were poured on the ice, the water would melt __more___ ice.