Work and Energy...

When heated, molecules absorb ____ and their capacity to do ____ increases.

Power is measured in :

Power spent by a machine depends on:

If $$1J$$ of work is done in $$1s$$, the power spent is equal to:

Unit of power is

Work is expressed by the formula as

For a heater rated at 4.4 KW; 220 V, calculate the energy consumed by the heater in 4 hours? 

One megawatt is equivalent to

1 Megawatt = a
1 Horsepower = b

Practical uit of power