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# How many joules of energy does a 100-watt light bulb use

ISBN: 9780321675460 31

## Solution for problem 49E Chapter 6

University Physics | 13th Edition

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Problem 49E

How many joules of energy does a 100-watt light bulb use per hour? How fast would a 70-kg person have to run to have that amount of kinetic energy?

Step-by-Step Solution:

Solution 49E Introduction The power of the bulb and the time is given, we have to calculate the total energy. Then using the above calculated energy we can calculated the velocity of since the mass of the person. Step 1 The power of the bulb is P = 100 W Time of the operation is t = 1 h = 3600 s 5 Hence the energy used by bulb in one hour is E = (100 W)(3600 s) = 3.6 × 10 J .

Step 2 of 2

##### ISBN: 9780321675460

The answer to “How many joules of energy does a 100-watt light bulb use per hour? How fast would a 70-kg person have to run to have that amount of kinetic energy?” is broken down into a number of easy to follow steps, and 29 words. The full step-by-step solution to problem: 49E from chapter: 6 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. This full solution covers the following key subjects: Energy, kinetic, amount, fast, Joules. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. This textbook survival guide was created for the textbook: University Physics, edition: 13. Since the solution to 49E from 6 chapter was answered, more than 669 students have viewed the full step-by-step answer. University Physics was written by and is associated to the ISBN: 9780321675460.

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