An ideal machine has lots of friction.
True
False...
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Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little
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Which of the following are molecules? a. al b. ag c. mgcl2 d. nacl e. c3h8
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Why do some scientists and archeologists think that volta was not the first person to build a battery
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Amoving freight car collides with an identical one that is at rest. if momentum is conserved, what happens to the second car after the collision? it attains the same speed as the first car. it moves at half the speed of the first car. it moves at twice the speed of the first car.
Answers: 3
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