Physics, 13.10.2020 02:01 mydoggy152
A small ball is hung by a string from the ceiling of a train car, so that the ball hangs vertically. Moving from rest, the train car accelerates forward, and continues to accelerate. A team of scientists observes the behavior of the ball from various locations. From which scientist's frame of reference does the motion of the ball appear to violate Newton’s Law of Inertia? A. on the train station platform B. inside of the train car C. in a second train car moving with constant speed in the same direction as the first train D. in a third train car moving with constant speed opposite the direction of the first train
Answers: 3
Physics, 21.06.2019 23:30
A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?
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Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.
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Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?
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A small ball is hung by a string from the ceiling of a train car, so that the ball hangs vertically....
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