# Change of thermal energy

## Homework Statement

HELP with physics homework, thermal energy?

I cannot figure out how to solve this problem, can someone show me how?

A small engine pumps 100 liters of water from a well 300m deep. What would the change in temperature be for the engine 20 liter cooling system (filled with methanol) if the engines efficiency is 54%

Specific heat of water 4180, and of methanol 2450

density of water 1kg= L

## The Attempt at a Solution

Related Introductory Physics Homework Help News on Phys.org
Andrew Mason
Homework Helper

## Homework Statement

HELP with physics homework, thermal energy?

I cannot figure out how to solve this problem, can someone show me how?

A small engine pumps 100 liters of water from a well 300m deep. What would the change in temperature be for the engine 20 liter cooling system (filled with methanol) if the engines efficiency is 54%

Specific heat of water 4180, and of methanol 2450

density of water 1kg= L

## The Attempt at a Solution

Show us what you have done so far. For starters, how much work does the engine have to do? (hint: that is the output).

AM