A power plant produces 50 MJ of useful energy and 100 MJ of wasted heat. What is the Efficiency? A: 50% B: 100% C: 33% D: 20% E: 67%

Question

asked Jul 27, 2024 213k views

1 Answer

Ethrbunny · Answer 1 · 2024-08-02T04:47:23+0000

Answer:

C. 33%

Step-by-step explanation:

Total energy = 50 MJ + 100 MJ = 150 MJ

According to law of conservation of energy, no energy is created or destroyed.

% Efficiency = Useful E / Total E x 100 = 50/150 x 100 = 33%