Physics, 01.09.2021 04:40 richchillnqueenz1ma
A railroad engine weighs 10 times as much as a freight car. If the engine coasts at 2 km/h into a freight car that is initially at rest, how fast do the two coast after they couple together?
Answers: 1
Physics, 22.06.2019 15:30
Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.
Answers: 1
Physics, 22.06.2019 19:00
Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?
Answers: 1
A railroad engine weighs 10 times as much as a freight car. If the engine coasts at 2 km/h into a fr...
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