# General Physics Problem

1. Mar 26, 2004

### Simple_Simon

I have a simple physics problem I'm not sure how to solve.

A child builds a big snowman which contains 50kg of snow. How much energy would it take to melt it from an initial temperature of -2 degrees Celsius?

2. Mar 26, 2004

### Staff: Mentor

Solve it in two steps. First find the heat needed to raise the temperature of the ice from -2 to 0 degrees C:
$$Q_1 = mc_{ice}\Delta t$$ ($$c_{ice}$$ is the specific heat of ice/snow)
Then find the heat needed to melt the ice:
$$Q_2 = mL_{water}$$ ($$L_{water}$$ is the latent heat of fusion for water-ice)