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A 8.26 kg crate slides on a horizontal surface. The coefficient of kinetic friction between the surface and the crate is 0.362. There is an external force pushing the crate to the right, directed 24.9o below the horizontal. If the crate slides with a constant velocity, 4.36 m/s, what is the magnitude of the external force acting on the crate?
0.20 g of hydrogen gas are held in a rigid container. the temperature of the gas is changed from 50 K to 80 K. How much heat is needed
A beam of thermal neutrons emerges from a nuclear reactor and is incident on a crystal. Find the Bragg- scattering angle that results in a scattered beam of this energy
An insulated vertical piston cylinder device initialy contains 10kg of water, 6 kg of which is in the vapor phase. Determine the mass of steam that has entered
A copper block is removed from a 310 degrees Celsius oven and dropped into 1.20kg of water at 20.5 degrees Celsius. The water quickly reaches 25.5 degrees Celsius and then remains at that temperature.
An arrow is launched from a height of 1.21 m above the ground with an initial velocity of 48.3 m/s, What will be the maximum height the arrow will reach during its trajectory
A particle moving at a speed of 0.92c is observed to have a mass of m=1682 MeV/c^2. Determine the rest mass Mo of the particle in kg
a uniform, upward electric field of magnitude 1.60 x 103 N/C has been set up between two horizontal plates by charging the lower plate positively and the upper plate negatively. How far horizontally from the left edge will the electron strike
A source delivers an AC voltage of the form change in v = 98.0 sin (80(pi)t), where change in v is in volts and t is in seconds, to a capacitor. Find the frequency of the source
A small object of mass 4.06 g and charge -16.5 µC is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground
Determine the magnitude of the emf EMF induced in the loop after exactly time 6.00 s has passed since the circumference of the loop started to reduce.
A plank 2.00 cm thick and 15.1 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
a mass of 0.30 kg is attached to a spring and is set into vibration with a period of 0.24s. what is the spring
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