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A uniform rectangular 87.25 kg refrigerator with height h = 2.089 m and width w = 1.115 m is pushed at a constant velocity across a level floor. The refrigerator is pushed in the horizontal direction halfway between the floor and the top of the refrigerator and the refrigerator does not tip over while being pushed. What is the value the coefficient of kinetic friction between the refrigerator and the floor?
A 1.50 ? 103-kg car starts from rest and accelerates uniformly to 16.5 m/s in 12.4 s. Find the average power developed by the engine
A particle has a charge of +1.7 ?C and moves from point A to point B, a distance of 0.12 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric..
A simple pendulum makes 143 complete oscillations in 2.80 min at a location where g = 9.80 m/s2. Find the period of the pendulum
A 10 microF parellel-plate capacitor with circular plates is connected to a 12.0V battery. What is the charge on each plate
A person of mass 72 stands at the center of a rotating merry-go-round platform of radius 3.40 and moment of inertia 950. The platform rotates without friction with the angular velocity 0.95. The person walks radially to the edge of the platform.
A 1.2 µF capacitor has an electric field of 0.8x105 V/m between two metal plates 1.1 mm apart. What is the energy stored on the capacitor
Use the following values for mass and charge: an electron has mass me = 9.11x10-31 kg and charge -e, a proton has mass mp = 1.67x10-27 kg, What is the kinetic energy of the electron
Kevin has a mass of 94.0 kg and is skating with in-line skates. He sees his 28.50 kg younger brother up ahead standing on the sidewalk, find Kevin's speed just before he grabbed his brother
Expalin by how much does the potential energy of a 18.0-kg child increase when the child climbs a normal staircase to the second floor?
A 40 kg artillery shell was fired from a cannon with an initial speed of 84 m/s at a 45° angle above the ground. How far from the cannon (in m) did the lighter piece land
The last piece has 4 times as much mass as each of the other pieces. Illustrate what is the magnitude of the velocity of the last piece?
Most materials will expand when the temperature is increased. The change in size will depend on several factors, including the original size, What is the fractional change in length
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