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A 3.00-kg block starts from rest at the top of a 30.0degree inclineand slides 2.00 m down the incline in 1.50 s. Find (a) the acceleration of the block, (b) the coefficient of kinetic friction between the block and the incline, (c) the frictional force actingon the block, and (d) the speed of the block after it has slid 2.00m.
a jet engine suspended beneath the wing of an airplane. The weight of the engine is 11800 N, find the magnitude of the torque due to the weight
The outfielder throws a baseball with an initial speed of 10 m/s. An infielder catches the ball at the level 1 m lower speed. determine the speed of the ball and its kinetic energy
A solenoid is made of N=2500 turns, has a length L=10cm, and a radius R=0.5cm. What is the current through the wires of the solenoid
The wheel of a car has a radius of 0.360 m. The engine of the car applies a torque of 327 N·m to this wheel, What is the magnitude of the static frictional force
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is = 1.72 × 109 W/m2. What is the rms value of (a) the electric field and (b) the magnetic field in the electromagnetic wave emitted by the laser.
A mass of 0.25 kg is attached to a horizontal spring with a spring constant of 4.0 N/m. Write an expression for the position of the mass as a function of time
Blocks with masses of 4.0, 8.0, and 9.0 are lined up in a row on a frictionless table. All three are pushed forward by a 16 force applied to the 4.0 block. How much force does the 8.0 block exert on the 8.0 block.
A mild structural steel beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safely supported when applied to the middle beam.
A 20.0kg rock slides on a rough horizontal surface at 5.50 m/s and eventually stops due to friction. What average thermal power (Watts) is produced as the rock stops
An object undergoes simple harmonic motion with a period of 0.015 s, and an amplitude of 1.2E-2 m. What's the fastest the object travels during its motion
A 119 kg fullback runs at the line of scrimmage. How fast was he running initially
A chair of weight 130 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 43.00 N directed at the angle of 35.0 degrees below the horizontal and the chair slides along the floor. Using Newton's law..
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