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A 25 kg child sits in a swing supported by two chains, each 4.5 m long. The acceleration of gravity is 9.8 m/s2 . If the tension in each chain at the lowest point is 208 N, find the child's speed at the lowest point.
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Question: A superball with mass m equal to 50 grams is dropped from a height of hi = 1.5 m . It collides with a table, then bounces up to a height of hf= 1.0m. The duration of the collision (the time during which the sup ...
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Question: A series RLC circuit consists of a 50ohm resistor, a 3.3 mH inductor, and a 480 nF capacitor. It is connected to a 5.0 kHz oscillator with a peak voltage of 5.0 V. A) What is the instantaneous current i when e= ...
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