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The initial kinetic energy imparted to a 0.0200-kg bullet is 1200J. (a) Assuming it accelerated down a 1.00-m longrifle barrel, estimate the average power delivered to it during thefiring. (b) Neglecting air resistance, find the range of this projectile when it is fired at an angle such that the range equals the maximum height attained.
the motor in a refrigerator has power p. if the freezing compartment is at temperature tl and the outside air is at
The sound level measured in a room by a person watching a movie on a home theater system varies from 65 dB during a quiet part to 95 dB during a loud part
Suppose 2.5 cubic meter of oil is spilled into the ocean. Find the area of the resulting slick, assuming that it is one molecule thick
If 3.9 moles of an ideal gas is at a temperature of 69 degrees C, find the pressure on the walls of the container due to gas
A fire helicopter carries a 649 kg bucket of water at the end of a 18.7 m long cable. Flying back from a fire at a constant speed of 44.2 m/s, Determine the force of air resistance on the bucket
The image behind a convex mirror (radius of curvature = 96 cm) is located 15 cm behind the mirror. What is the magnification of the mirror
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes in 69.0 degrees, Find the angle the resultant force makes with the rope of dog A
Polarized light goes through two Polaroid sheets. The angle between the two sheets is 50°. what is the angle between the original light and the first sheet
A cat rides a merry-go-round while turning with uniform circular motion. At time t1 = 2.00 s, What is the magnitude of the cat's centripetal acceleration
A jet airliner moving initially at 300 mi/h due east enters a region where the wind is blowing at 100 mi/h in a direction 28.0° north of east. What is the new velocity of the aircraft
A cylinder contains 2.25 mol of helium gas at 21.0°C. Assume that the helium behaves like an ideal gas. What is the average kinetic energy per molecule
A Carnot engine operates between hot and cold reservoirs with temperatures 527 Degrees Celsius and -73 Degrees Celsius. how much heat is extracted per cycle from the hot reservoir
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