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Physics, 26.10.2019 06:43 rockinrachel9099
Suppose you are in an elevator that is moving upward. as the elevator nears the floor at which you will get off, its speed slows down. during this time when the elevator is moving upward with decreasing speed, your weight will be
greater than your normal weight at rest
equal to your normal weight at rest
less than your normal weight at rest
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Physics, 22.06.2019 12:20
Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?
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Physics, 22.06.2019 13:00
Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.
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Suppose you are in an elevator that is moving upward. as the elevator nears the floor at which you w...
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