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A point source of light is 235.0 cm below the surface of a body of water. Discover the diameter of the circle at the surface during which light emerges from the water.
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. What is the power of one laser pulse
A ladder of mass 30 kg and length 5m leans against a frictionless wall. The angle between the ladder and the wall is 37 degree. what is the force between the ladder and the wall
If the inside of the vessel is maintained at atmospheric pressure 1.013 × 105 Pa, what is the net force on a porthole of diameter 16.9 cm?
After a 0.250-kg rubber ball is dropped from a height of 1.80 m, it bounces off a concrete floor and rebounds to a height of 1.20 m. (a) Determine the magnitude and direction of the impulse delivered to the ball by the floor. magnitude? direction?
A 7650kg iceberg with density 931 kg/m3 is afloat in seawater with density 1030 kg/m3. find the buoyant force on the iceberg
question a rock is projected from the edge of the top of a building with an initial velocity of 15 ms at an angle of
a man sitting in a bosun's chair that dangles from a massless rope, which runs over a massless frictionless pulley, In each of the four cases, what is the force exerted on the ceiling by the pulley system
0.125kg of water at 85.0 degrees is poured into an insulated cup containing 0.240kg of ice initally at 0 degrees. Calculate the mass of liquid
A massless spring with spring constant 20 N/m hangs vertically. A body of mass0.15 kg is attached to its free endand then released. Find the amplitude of the resulting motion
consider a model rocket that is lunched in a vertical direction. Nelected air resistance and changes in its mass , m. determine the mamimum alttiude
A simple ideal Rankine cycle which uses water as the working fluid operates it's condenser at 45 degrees C. determine Work produced by the turbine
a charged particle a exerts a force of 2.69 to the right on charged particle b when the particles are 13.7 mm apart.
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