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The Cosmic Perspective Fundamentals | 2nd Edition | ISBN: 9780133889567 | Authors: Jeffrey O. Bennett; Megan O. Donahue; Nicholas Schneider; Mark Voit
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QUESTION:

Problem 20SEQ

Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) designates a quantitative problem, for which you should show all your work.

*Energy from Antimatter The total annual U.S. power consumption is about 2 × 1020 joules. Suppose you could supply that energy by combining pure matter with pure antimatter. Estimate the total mass of matter-antimatter fuel you would need in order to supply the United States with energy for 1 year. How does that mass compare with the amount of matter in your car’s gas tank? (A gallon of gas has a mass of about 4 kilograms.) (Hint: Consider the meaning of the formula E = mc2 and use the fact that 1 joule = 1 kg × m2/s2.)

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QUESTION:

Problem 20SEQ

Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) designates a quantitative problem, for which you should show all your work.

*Energy from Antimatter The total annual U.S. power consumption is about 2 × 1020 joules. Suppose you could supply that energy by combining pure matter with pure antimatter. Estimate the total mass of matter-antimatter fuel you would need in order to supply the United States with energy for 1 year. How does that mass compare with the amount of matter in your car’s gas tank? (A gallon of gas has a mass of about 4 kilograms.) (Hint: Consider the meaning of the formula E = mc2 and use the fact that 1 joule = 1 kg × m2/s2.)

ANSWER:

Problem 20SEQ

Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) designates a quantitative problem, for which you should show all your work.

*Energy from Antimatter The total annual U.S. power consumption is about 2 × 1020 joules. Suppose you could supply that energy by combining pure matter with pure antimatter. Estimate the total mass of matter-antimatter fuel you would need in order to supply the United States with energy for 1 year. How does that mass compare with the amount of matter in your car’s gas tank? (A gallon of gas has a mass of about 4 kilograms.) (Hint: Consider the meaning of the formula E= mc2 and use the fact that 1 joule = 1 kg × m2/s2.)

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The amount of energy consumed annually is .

 

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