Question

A certain household has consumed 250 units of energy during
a month. How much energy is thA 75.0 kg man pushes on a 5.0 x 105 ton wall for 250 s but it does not move. How much work does he do on the wall? (2000 lb = 1 ton; 0.454 kg = 1 lb) is in joules?

Answer 1

Answer:

Energy consumed by certain households in a month E=250 units =250 kWh

∴E=250×3.6×10

6

J (∵1kWh=3.6×10

6

J)

⟹E=9×10

8

Joules