免费功率(物理)计算器
计算物理学中的功率P=W/t。
J
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功率
200.00 W
Power (kW)0.2000 kW
Power (hp)0.2682 hp
Power vs Time
公式
## Mechanical Power Power is the rate at which work is performed or energy is transferred. ### Formula **P = W / t** One watt equals one joule per second. To convert watts to horsepower, divide by 745.7.
计算示例
A motor does 1000 J of work in 5 seconds.
- 01P = W / t
- 02P = 1000 / 5
- 03P = 200 W
- 04P = 0.2 kW
- 05P = 200 / 745.7 = 0.268 hp
常见问题
What is the difference between power and energy?
Energy is the total amount of work done, while power is the rate at which that work is done. A 100 W bulb uses 100 joules of energy every second.
How do you convert watts to horsepower?
Divide watts by 745.7 to get mechanical horsepower. For example, 746 W is approximately 1 hp.
What is a kilowatt-hour?
A kilowatt-hour (kWh) is a unit of energy equal to 1000 watts sustained for one hour, or 3,600,000 joules.
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