November 30, 2015

Homework Help: Physics

Posted by john on Sunday, June 17, 2012 at 4:30am.

Anyone can help me with these questions:
1. BC Hydro charges $5.91 per kWh. How long does it take a 100 W light bulb to use up $1.00 of energy? (answer = 1.7h)
2. A small bag of chips contains 230 Calories (1000 calories = 1 calorie = 4.19 kJ). To what max. height could a 70 kg person climb with this amount of energy?

Thanks :)

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