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A 95-kg man pulls a 14-kg sled 66 meters along an angled hill with a force of 109 N, which elevates the man 29 meters above the bottom of the hill. The man then hops on his sled and slides from rest to the bottom of the hill back along his 66 meter path, during which a 212 N frictional force acts upon his sled. What is the velocity in m/s of the man on the sled right as he reaches the bottom of the hill?
Calculate the camel's eastward displacement while he crosses the desert. reply in units of km.
Charge is distributed uniformly throughout the volume of an infinitely long cylinder of radius R = 1.00×10-2 m. The charge density is 1.00×10-1 C/ m3. What is the electric field at r = 5.00×10-3 m? What is the electric field at r = 2.00×10-2 m?
A steel wire in a piano has a length of 0.8000 m and a mass of 3.900 10-3 kg. To what tension must this wire be stretched so that the fundamental vibration corresponds to middle C (fC = 261.6 Hz on the chromatic musical scale)?
Liquid nitrogen boils at 77.00 K. Would this experiment needs to be altered if we used water, which boils at 373 K? Why.
A 54-kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal. Find the work done by the kinetic frictional force that acts on the skis
Assume that a CCD pixel is a uniformly made cube of silicon. The relation between pixel size and full well capacity is roughly true for real CCDs. Discuss what applications might require a CCD with large pixels and with small pixels.
Two circular coils are concentric and lie in the same plane. The inner coil contains 120 turns of wire, has a radius of 0.012m, and carries a current of 6.0A. The outer coil contains 150 turns and has a radius of 0.017 m.
When a single person shouts at a football game, the loudness of sound at the center of the field is 55 dB. Than all the people shout together, the loudness increases to 106 dB. Suppose that each person is about the similar distance from the center of..
question a solid ball encounters a 0.760 m vertical rise on the way back to the ball rack. ignore frictional losses and
A small object with mass 5.00 kilogram moves counterclockwise with constant speed 5.50 m/s in a circle of radius 3.00 meter centered at the origin. Determine what total force is exerted on the object
Early in the morning, when the temperature is 4oC, gasoline is pumped into a car's 51-L steel gas tank until it is filled to the top. Compute how much gasoline spills out in this case
A 20 cm long organ pipe is filled with air and is open at one end and closed at the other. The velocity of sound in air at 0°C is 331 m/s. What is the wavelength of the fundamental frequency
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