# A heat engine with an efficiency of 17 % does 836 J of work in each cycle. How much heat must be supplied from the high-temperature source in each cycle?

##### 3 Answers

#### Explanation:

Coefficient of efficiency of a heat engine is defined as the ratio of work done

So,we can write,

Given,

So,

See below

#### Explanation:

Let's recall the definition of efficiency:

So, we are given the output of work here as

Let's substitute and solve:

The total energy consumed per cycle is 4918 J

#### Explanation:

17 % efficiency means that in one cycle,

Therefore if 836 J of work is done in each cycle, solving the following equation for

I hope this helps,

Steve