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1. A marble rolls down an incline of 30 degrees. If the marble is initally at rest at the top ofthe incline of length 2.0 meters what will the speed of the marble be at the bottom of the incline
(a) if the incline is rough enough to prevent any slipping [ it rolls], then
(b) if the hill is perfectly smooth [it slides without rolling]?
(c) Why does the marble have different speeds when the total energy must be conserved in both cases? [ clear argument is required]
Determine how long it would take an astronaut to fall from a height of 2 meters on the Moon. Compare this time to the time it would take the astronaut to fall the same 2 meters on the Earth. Also, compare the time to the time it would take on the ..
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A 24-V battery is connected in series with a resistor and an inductor, Find the energy stored in the inductor one time constant after the switch is closed
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