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A mass of 6 kg lies on a horizontal surface with friction, initially at rest. The coefficient of static friction is 1.44 and the coefficient of kinetic friction is 0.55. One force of 17 Newtons is applied to it upwards (in +y direction). If a force of 249 Newtons is applied in the +x direction, what is the amount of friction acting on the mass in Newtons?
The engine of an aircraft propeller delivers an amount of power 179hp to the propeller at a rotational velocity of 2310rev/min. How much torque does the aircraft engine provide
You are standing at a red light on SW 8th Street at 97th Avenue. The light turns green, find the work done on your car by the frictional force
A block is dropped onto a spring with k = 31 N/m. The block has a speed of 3.5 meter per second just before it strikes the spring. evaluate what is the mass of the block
Three electrons are located at the vertices of an equilateral triangle, one at each vertex. What is the magnitude of the initial acceleration of each electron
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.70 104 m/s, and the radius of the orbit is5.00 106 m. What is the orbital speed of the second satellite
A helium balloon occupies 8.8L at 20 C and 1.0-atm pressure. The balloon rises to an altitude where the air pressure is 0.60atm and the temperature is 10C. What is its volume when it reaches equilibrium at the new altitude? Note: Neglect tension forc..
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A diffraction grating with 750 slits/mm is illuminated by light that gives a first order diffraction angle of 34 degrees. What is the wavelength of the light
A wooden board is 2.0 m long and has a mass of 10 kg. Thisboard is supported at each end by cement blocks A and B. Calculate the force of the board on cement block A and on cement block B
A broad beam of light of wavelength 485nm is incident at 90° on a thin, wedge-shaped film with index of refraction 1.50. An observer intercepting the light transmitted by the film sees 17 bright and 16 dark fringes along the length of the film. By..
A pool of water is 3.00 m deep and 4.00 m wide. Someone lying with his face close to the water is looking for a coin that is directly across the pool on the bottom far edge. Will he be able to see it?
Determine the temperature of the surface of the steam kettle that is in contact with the stove.
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