Question

A petrol engine with an energy efficency of 45 percent produces 1500 joules of mechanucal energy what is the chemical potential energy of petrol?

Answer 1

3333.3333

Explanation:

At 45% efficiency it produces 1500 Joules of energy.
This means that 1500 joules is 45% of the total possible energy

`(45/100)*x=1500`

`x=1500*(100/45)`

`x=3333.3333`

So theoretically it can produce 3333.33 joules of energy which its chemical potential energy