%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.
The joule (J) is the unit of measure for energy used in the International System of Units (SI), and the one accepted in scientific circles.The unit is used in all equations and calculations involving energy.he joule is a unit of measure for energy. Sitting quietly, a person generates 100 J of heat every second. Individuals pay per kilowatt hour for the electricity they use in their homes. The amount of energy required to lift an apple 1 meter (3.3 feet) is roughly equivalent to 1 Joule.