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20.Energy from antimatter total annual U.S. power consumption is about 2x1020 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 provide the United States with energy for 1 years. 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 B=mc2 and use the fact that 1 joule-1KG X m2/s2.)
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