- #1

- 559

- 0

## Homework Statement

A block mass 400g thermal capacity 150J/K at 10 degrees C is dropped from a height of 100m into a lake at 10 degrees C. Work out entropy change of the universe.

## Homework Equations

## The Attempt at a Solution

Not sure how to do this one..I guess we work out entropy change of block and lake separately, but i dont know how to begin..

entropy delta S = integral dQ/T... what do i do :S ?