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Multiple-Concept Example 10 provides one model for solving this type of problem. Two wheels have the same mass and radius of 4.2 kg and 0.39 m, respectively. One has
(a) the shape of a hoop and the other
(b) the shape of a solid disk. The wheels start from rest and have a constant angular acceleration with respect to a rotational axis that is perpendicular to the plane of the wheel at its center. Each turns through an angle of 12 rad in 9.8 s. Find the net external torque that acts on each wheel.
The maximum speed and acceleration of a simple harmonic oscillator are 0.96 m/s and 1.58 m/s. Find the oscillation amplitude. Express your answer with the appropriate units.
A spaceship of mass 2.20×106kg is cruising at a speed of 4.20×106m/s when the antimatter reactor fails, blowing the ship into three pieces
What is the magnitude of the force on the bead. find the charge of the particle.
Two rubber bands cause an object to accelerate with acceleration a. How many rubber bands are needed to cause an object with half the mass to accelerate five times as quickly
A certain kind of glass has an index of refraction of 1.660 for blue light of wavelength 430 nm, what is the angle between the two beams inside the glass
A 1.00x10^2 kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.200. What must be the magnitude of P, so that the net work done by it and the k..
Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, find the electric potential energy of this system of charges
The loaded cab of an elevator has a mass of 3.7 x 10^3 kg and moves 228 m up the shaft in 21 s at constant speed. At what average rate does the force from the cable do work on the cab.
A capacitance C and an inductance L are operating at the same frequency. What is the reactance of each element
A football punter accelerates a football from rest to a speed of 7 m/s during the time in which his toe is in contact with the ball (about 0.16 s). what average force does the punter exert on the ball
A woman slowly lifts a box weighing 48.0 N from the floor to a shelf 1.50 m above, Find the net work done on the box
A car is coasting at 20 meters/sec at the top of a 100 meter high hill. The car rolls down the hill. How fast fast is the car traveling when it reaches the bottom
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