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Q1. A flywheel having constant angular acceleration requires 4.60 to rotate through 170. Its angular velocity at the end of this time is 109. Find out the angular velocity at the beginning of the 4.60 interval; the angular acceleration of the flywheel.
Q2. A chair of weight 120 N is sitting on the horizontal floor; the floor is not frictionless. You push on the chair with a force = 43 N that is directed at an angle of 39.0 below the horizontal and the chair slides along the floor.
Q3. Two particles with masses 6m and 3m are moving toward each other along the x axis with the same initial speeds vi. The particle with mass 6m is travelling to the left, and particle 3m is travelling to the right. They undergo a head-on elastic collision and each rebound along the same line as it approached. Discover the final speeds of the particles.
The cone of a loudspeaker vibrates in SHM at a frequency of 262 Hz. The amplitude at the center of the cone is xm = 1.5 x 10-4m, What is its maximum velocity and acceleratio
An X-ray tube gives electrons, which start at rest, a constant acceleration over a distance of 23cm. If their final speed is 1.3 x 107 m/s, what are the time they spend accelerating
Two parallel wires of length 17 m are separated by a distance of a = 0.13 cm, What is the magnetic force on each wire
A 500 kg polar bear of average density 950 kg/m3 is stranded on a melting chunk of ice in the ocean. What is the smallest volume of ice that will keep the bear entirely above water
Determine the speed of M2 at a time 1.85 s after the system is free from rest.
A physicist uses a cylindrical metal can 0.300m high and 0.070m in diameter to store liquid helium at 4.22 K; at that temperature the heat of vaporization of helium is 2.09×104J/kg. How much helium is lost per hour
Two charges, +q and -q, are located in the x-y plane at points (0,+d/2) and (0,-d/2), respectively. Calculate the magnitude of the electric field at point P with the superposition principle
Find the flux of the Earth's magnetic field of magnitude 5x10^-5, through a square loop of area 10cm^2 for the following
Earth's atmosphere is constantly bombarded by cosmic ray protons that originate somewhere in space. What would be the electric current intercepted by the total surface area of the planet
A 600g model rocket is on a cart that is rolling to the right at a speed of 3.0m/s. At what horizontal distance left of the loop should you launch
In an ice show a 65.0 kg skater leaps into the air and is caught by an initially stationary 85.0 kg skater. How much kinetic energy is lost?
Because of air resistance a constant torque exerted on the system to keep it spinning at that rate. Assuming that the air exerts a miniscule force on the stick (but a significant force on the ball), identify the force the air exerts on the ball.
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