Watts are a measure of power, Joules are a measure of energy. The energy is equal to the power times the time.
So if you have a power of 5 watts running for 7 seconds, that is 5x7 Joules of energy, or 35 Joules.
Looked at another way, power measures how fast energy is converted. So 35 Joules converted in 7 seconds would be 5 watts of power, but it would need 35 watts to convert that energy in 1 second.
1540 watts
210,000,000 watts
132 watts
100wats
0.25 megawatts is 250,000 watts.
746 watts.
95,000 watts.
.0001 watts
45 watts
1650 watts.
25000 watts
100 watt