How long does it take the camera to reach the ground
A parachutist with a camera, both descending at a speed of 12 m/s, releases that camera at an altitude of 120 m.
(a) How long does it take the camera to reach the ground?
(b) What is the velocity of the camera just before it hits the ground?
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Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tightly wound with a single layer of 2.20-mm-diameter superconducting wire. What is the current needed.
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