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An inductor has a cross-sectional area of .03m2 and a length of 4 cm. When the current running through it changes from 6A to 10 A in .2 s, there is an induced voltage of .1885 V. How many loops are in the inductor?
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 128-kg laser sensor that measures the thickness of the ice, find the tension in the cable towing the sensor
A centrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. Find the constant angular acceleration (in rad/s2) of the centrifuge
A complete series circuit consists of a 12.5V battery, a 3.70ohm resistor, and a switch. What does an ideal voltmeter read when placed across the terminals of the battery
A converging lens of focal length 7.550cm is 20.5cm to the left of a diverging lens of focal length -6.50cm, find the location of the coins final image
Landing on the Moon, a spacecraft fires its retrorockets and comes to a complete stop just 19m above the lunar surface. It then drops freely to surface.How long does it take to fall in seconds? What is its impact speed in meter per seconds.
A 4.0 kg block is released from rest at the top of a 30 degree frictionless incline. The block makes a head on elastic collision with another 3.0 kg block initially at rest on a horizontal surface at the bottom of the incline.
An artificial lens is implanted in a person's eye to replace a diseased lens. The distance between the artificial lens and the retina is 2.70 cm, What is the power of the implanted lens
Burning a pound of coal produces about 13,000 Btu of energy. How many megajoules of energy are produced by burning 4 pounds of coal?
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. find the magnitude of the lift force acting on the plane
0.20 g of hydrogen gas are held in a rigid container. the temperature of the gas is changed from 50 K to 80 K. How much heat is needed
A person on earth notices a rocket approaching from the right at a speed of 0.83c and another rocket approaching from the left at 0.64c. What is the relative speed between the two rockets
A 3m-long rigid beam with a mass 140 kg is supported at each end. An 75 student stands 2m from support 1.
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