%displayPrice% at %seller% The Lenovo B50 is a midrange all-in-one desktop PC that's made to keep even enthusiast-level users happy for a few years.
Energy is an amount, while power is a rate at which energy is used. Energy is measured in watt-hours (WÂ·h) or joules (J). Power is measured in watts (W) or joules per second (J/s). Watt-hours are like buckets, and watts are like buckets per hour. If you have 5 buckets of energy and you pour one bucket per hour, you'll be able to pour for 5 hours before you run out.
A: The thermal energy within an object is measured in joules. This unit is obtained from other basic units, such as mass, time and length. The unit was named in honor of Prescott Joule. A calorie is also a measure of heat.