4p A teacher pushed a 98 N desk across a floor for a distance of 5 m he
exerted a horizontal force of 20 N for four seconds. 1) How much work
was done ? 2) How was his power ? 3) what is meant by energy = 3J*

You can get w =Fxd 20Nx5m w=100N energy= w÷t 100N÷4s E=25J 3 you can apply 3J in one second

we can see how the government has failed them.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.