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A 100-coil spring has a spring constant of 560 N/m. It is cut into four shorter springs, each of which has 25 coils. One end of a 25-coil spring is attached to a wall. An object of mass 66 kg is attached to the other end of the spring, and the system is set into horizontal oscillation. What is the angular frequency of the motion?
The potential at the center of a uniformly charged ring is 44kV, and 15.0 cm along the ring axis potential is 30kV. Find the ring's radius and its total charge.
A 70·kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 37.0° above the horizontal. What is the total work done on the box by all forces
A horizontal force of 20 N pulls a block of mass 3.7 kg across a level floor. The coefficient of kinetic friction between the block, what is the final speed of the block
The safe slides with a constant speed if Clyde pushes from behind with 420 {rm N} of force while Bonnie pulls forward on a rope with 285 {rm N} of force. Illustrate what is the safe's coefficient of kinetic friction on the bank floor?
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
A 3.5 m long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kg construction worker stands at the far end of the beam.
A uniform electric field has magnitude E = 270 N/C and is directed to the right. A particle with charge +4.3 nC moves along the straight line from a to b that is 0.25m in length, What is the work done on the particle by the electric field
An explorer in dense jungles of equatorial Africa leaves his hut. He takes 41 steps at an angle 45 north of east, then 81 steps at an angle 60 north of west, then 51 steps due south. Suppose his steps all have equal length. Save him from becoming ..
A laser pulse has an energy of 16 J and a beam radius of 2 mm. The pulse duration is 13 ns and the energy density is constant within the pulse. What is the total energy density within the pulse
create destructive interference between the speakers. Friction provides the force required for a car to travel around a flat, circular race track.
An airplane is flying with a velocity of 82 at an angle of 25 above the horizontal. When the plane is a distance 125 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog will ..
Estimate the thickness of steel (density 8 g/cm3) needed to stop a proton of momentum 2 GeV/c. Then, for the same thickness of steel, calculate the energy loss of a 2 GeV/c gamma ray.
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