Aroller coaster (378 kg) moves from a (3.24 m above the ground) to b (28.3 m above the ground). two non-conservative forces are present: friction does -2.84 x 104 j of work on the car, and a chain mechanism does +5.24 x 104 j of work to the car up a long climb. what is the change in the car's kinetic energy kef - keo from a to b?
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On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units
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Aroller coaster (378 kg) moves from a (3.24 m above the ground) to b (28.3 m above the ground). two...
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