Question

An electric motor that transforms 1000 J of chemical potential energy into 975 J of kinetic energy and 25 J of wasted heat energy

help pls <3

Answer 1

Answer: The efficiency is 97.5% or 0/975

Explanation: Efficiency = Useful output/Total Input

975/1000 = 0.975

In this instance, 975 J is the useful output and the 1000 J is the total input so you divide Useful/Total energy