2. A train travels at 190 kilometers in 3.0 hours. What is its speed in km/hr?
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Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.