Define watt, express kilowatt in terms of joule per second. A150kg engine develops 500w for each kg. What force does it exert in moving the car at a special of 20ms-1?
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the amount work done in 1second of time intervel is said to be 1 watt..
1 kwh→ 3600000 joules per second..
1 kwh→ 3600000 joules per second..
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