Energy Baselines Flashcards by A B

Q

Energy released by kiloton of TNT

A

4.2E12

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Q

Energy Earth receives from sun

A

1.7E17 J/s

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Q

US energy use per year

A

E20 J/year

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Q

World energy use per year

A

6E20 J/year

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Q

Burger

A

2E6 J

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Q

Daily Diet

A

8E6 J

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Q

1kcal

A

4E3 J

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Q

1kWh

A

3.6E6 J

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Q

50 L of gasoline

A

1.5E9 J

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Q

resting human power

A

1E2 J/s

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Q

1 hour hard exercise

A

1E6 J

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Q

Magnitude 7 earthquake

A

1E15 J

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Q

lighting bolt

A

1E9 J

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Q

Use of a typical LED for 1 second

A

4E-2

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Q

Internal combustion engine and human food to energy efficiency

A

~20%

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Q

thermal power plant efficiency

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A

~30%

Q

electric motor efficiency

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A

~90%

Q

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A