1 kWh- 1000 j/sec 1 kWh - 3400 BTUS 1. 3000 watts =3 kW %3D 2. 50,000KW = 3. 4.5 x 10^ 6 watts = 4. 30 MW = 5. 6.8 x10^8 BTU = 6. If 200 kW are used for 500 hours, how kWh are used? mW mW kW kWh 7. If 4000 kw are used for 8,000 hours, how many kWh are used? 8. If a 100 watt light bulb is used 2 hours a day for 5 days, how many kWh are used? 9. A family heats 80,000 gallons of water per year. It takes 0.2 kwh to heat each gallon. If each kwh costs $ 0.10, how much will the family spend per year? 10. How much energy is saved, in kWh, if a family that uses a 100 watt light bulb for an hour a day for 30 days switches to a 60 watt bulb instead?

1 kWh- 1000 j/sec 1 kWh - 3400 BTUS 1. 3000 watts =3 kW %3D 2. 50,000KW = 3. 4.5 x 10^ 6 watts = 4. 30 MW = 5. 6.8 x10^8 BTU = 6. If 200 kW are used for 500 hours, how kWh are used? mW mW kW kWh 7. If 4000 kw are used for 8,000 hours, how many kWh are used? 8. If a 100 watt light bulb is used 2 hours a day for 5 days, how many kWh are used? 9. A family heats 80,000 gallons of water per year. It takes 0.2 kwh to heat each gallon. If each kwh costs $ 0.10, how much will the family spend per year? 10. How much energy is saved, in kWh, if a family that uses a 100 watt light bulb for an hour a day for 30 days switches to a 60 watt bulb instead?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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