Answered: For most purposes, we store electrical…

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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For most purposes, we store electrical energy in batteries. But there are drawbacks to batteries: They release their energy rather slowly and are very damaging environmentally. Capacitors would be much cleaner for the environment and can be quickly recharged. Unfortunately they don’t store much energy.

1)A new 1.5-V AAA battery has a “capacity” (not capacitance) of 1100 mA·h. What does this “capacity” actually represent? Express it in standard SI units. (Express your answer to three significant figures.)

2)How many joules of energy can be stored in the AAA battery?( (Express your answer to two significant figures.)

3)At a steady current of 400 mA, how many hours will the AAA battery last? (Express your answer to two significant figures.)

4)How much energy can be stored in a typical 10-μF capacitor charged to a potential of 1.5 V? (Express your answer to two significant figures.)

5)How does that compare to the energy stored in the AAA battery? (Express your answer to two significant figures.)

For most purposes, we store electrical energy in batteries. But there are drawbacks to
batteries: They release their energy rather slowly and are very damaging
environmentally. Capacitors would be much cleaner for the environment and can be
quickly recharged. Unfortunately they don't store much energy.
1) A new 1.5-V AAA battery has a "capacity" (not capacitance) of 1100 mA-h. What
does this "capacity" actually represent? Express it in standard SI units. (Express your
answer to three significant figures.)
kC Submit
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+
2) How many joules of energy can be stored in the AAA battery?( (Express your answer
to two significant figures.)
KJ Submit
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+
3) At a steady current of 400 mA, how many hours will the AAA battery last? (Express
your answer to two significant figures.)
h
Submit
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You can make 10 more submissions for this question.
4) How much energy can be stored in a typical 10-µF capacitor charged to a potential
of 1.5 V? (Express your answer to two significant figures.)
uJ Submit
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You can make 10 more submissions for this question.
5) How does that compare to the energy stored in the AAA battery? (Express your
answer to two significant figures.)
x10° Submit
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You can make 10 more submissions for this question.

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