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A step-up transformer has 4 turns on the primary coil and 500 turns on the secondary coil. If this transformer is to produce an output of 4500 V with a 12 mA current, what input current and voltage are needed?
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Question: A rock thrown with speed 10.5 and launch angle 30.0(above the horizontal) travels a horizontal distance of = 18.0before hitting the ground. From what height was the rock thrown? Use the value = 9.810 for the fr ...
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Quesiton: A rock is tossed straight up with a velocity of 20m/s When it returns, it falls into a hole 10 m deep. What is the rock's velocity as it hits the bottom of thehole? How long is the rock in the air, from the ins ...
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