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1. A ball travelling horizontally at 5.6m/s role off the edge of a cliff. How long does it take to fall 2.7m?
2. Without pushing himself with his poles, a skier glides down a slope 13.5degrees below the horizontal. If the force of friction is not significant, what is his acceleration?
Write down the equation for this process, and using values for the binding energy of the hydrogen and carbon-12 nuclei of 0 MeV and -92.2 MeV respectively, calculate the binding energy of the nitrogen nucleus.
What are the forces acting on the board due to the two supports as a diver of mass 63 kg stands at the end of the board over the water.
Water flows through a horizontal pipe of cross-sectional are 10 cm2 at a pressure of 0.25 atm. Find what is the pressure at the valve
The driver of a car that has a mass of 1400 kg is coasting down a hill. He sees a stop sign at the bottom of the hill. His speed when he begins to brake is 28m/s and he is 200 m from the stop sign up the hill which has a grade of 10 percent.
A water dispenser for pets has an inverted plastic bottle. When acertain amount of water is drunk from the bowl, more water flowsautomatically from the bottle into the bowl. The bowl neveroverflows. Explain the operation of the dispenser. Does the he..
A sample contains radioactive atoms of two types, A and B. Initially there are five times as many A atoms as there are B atoms. obtain the half life in hours
Now a peg is placed 4/5 of the way down pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its starting po..
At an open-air concert a person sits at a location that is 7m and 9.10m, respectively, from speakers at each side of the stage. A musician plays a single 494 Hz tone, explain what the listener hears.
a basketball (m= 0.60 kg) is dropped from rest. just before striking the floor the ball has a momentum whose magnitude is 3.1 kg x m/s. at what height was the basketball dropped
Water flowing out of a horizontal pipe emerges through a nozzle. The radius of the pipe is 2.4 cm, and the radius of the nozzle is 0.56 cm. determine the absolute pressure of the water in the pipe
A child goes down a playground slide with an acceleration of 1.40. Find out the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 31.0 below the horizontal.
Camera lenses are described in terms of their focal length. A 50 mm lens has a focal length of 50 mm, Locate the position of the image
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