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A roller-coaster car has a mass of 1170 kg when fully loaded with passengers. As the car passes over the top of a circular hill of radius 20 m, its speed is not changing.
(a) At the top of the hill, what is the normal force (using the negative sign for the downward direction) FN on the car from the track if the car's speed is v = 7.6 m/s?
(b) What is FN if v = 17 m/s?
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Amazingly, at exact distance that you calculated in question 2a (73.5 meters), there was a trampoline! Thinking quickly, I orient myself appropriately and hit the trampoline.
A system of 1610 particles, each of which is either an electron or a proton, How many electrons are in this system
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A stone isdropped off a 30m high cliff. How long does it take to reach the ground
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A force of 323N is applied horizontally to a crate in order to displace crate 30m across a level floor at a constant velocity. As a result of this work.
A pendulum is not perfect simple harmonic motion. derive theequation for the period of a pendulum from the equation for theperiod of a simple harmonic spring oscillator and Hooke's Law.
A man of mass 73.9 kg and density 970 kg/m3 stands in a shallow pool with 33.5 % of the volume of his body below water
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