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Problem: You and your friend Peter are putting new shingles on a roof pitched at 23 degrees. You're sitting on the very top of the roof when Peter, who is at the edge of the roof directly below you, 5.4m away, asks you for the box of nails. Rather than carry the 2.2kg box of nails down to Peter, you decide to give the box a push and have it slide down to him.
Part A: If the coefficient of kinetic friction between the box and the roof is 0.55, with what speed should you push the box to have it gently come to rest right at the edge of the roof?
Please show all intermediate formulas and steps for above problem.
A 55 g piece of aluminum at 21 °C is cooled to -196 °C by placing it in a large container of liquid nitrogen at that temperature. How much nitrogen is vaporized
The temperature in Browning, Montana, was 44.0oF on 23 January 1916. The next day the temperature plummeted to - 56.0oF. Find what was the temperature change in Celsius degrees
A 1.5 {rm kg} block rests on top of a 7.5 {rm kg} block. The cord and pulley have negligible mass, and there is no significant friction anywhere. What force F should be applied to bottom block so the top block accelerates to the right at 2.60 m/s^..
A cylindrical chamber containing an ideal diatomic gas is sealed by a movable piston with cross-sectional area A = 0.0015 m2. What is the final volume after the mass comes to rest
What fraction of the initial kinetic energy was transferred
snowballs are thrown with a speed of 12ms from a roof 5.0m above the ground. snowball a is thrown straight downward
The asteroid belt circles the sun among the orbits of Mars and Jupiter. One asteroid has a period of 5.0 earth years. What is the asteroid's orbital speed? What is the asteroid's orbital radius? The moon's force is what percent of the sun's force? Wh..
You are traveling on an airplane. The velocity of the plane with respect to the air is 180 m/s due east. How far east will the plane travel in one hour
A simple pendulum with mass m = 1.5 kg and length L = 2.41 m hangs from the ceiling, What is the magnitude of the radial acceleration as the pendulum passes through the equilibrium point
what is the final equilibrium temperature of the system?
the electric potential at a position located a distance of 22.8 mm from a positive point charge of 8.00times10-9c and
Imagine you are sent in a satellite above Earth. Find what would the velocity of the satellite be for the satellite to orbit around the earth
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