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A stationary bicycle is raised off the ground, and its front wheel (m = 1.38 kg) is rotating at an angular velocity of 14.3 rad/s (see the figure). The front brake is then applied for 1.50 s, and the wheel slows down to 1.58 rad/s. Assume that all the mass of the wheel is concentrated in the rim, the radius of which is 0.330 m. The coefficient of kinetic friction between each brake pad and the rim is ?k = 0.512. What is the magnitude of the normal force that each brake pad applies to the rim?
The magnetic field inside a superconducting solenoid is 5.80 T. The solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. Determine the magnetic energy density in the field
A diffraction grating produces a first order bright fringe that is 0.226 m away from the central bright fringe on a flat screen which is 0.675 m away. What is the wavelength of the light shining on the grating
A kaon is moving in the +x direction decays by this process, where that pi^+ is moving off at a speed of 0.9c in the +x-direction, determine the speed of the kaon before the decay
A cat runs along a straight line (the x-axis) from point A to point B to point C. The distance between points A and C is 5.00 m, distance between points B and C is 10.0 m, and the positive direction of x axis points to the right. The time to run f..
A 70.0-g object connected to a spring with a force constant of 25.0 N/m oscillates with an amplitude of 6.00 cm on a frictionless, horizontal surface. Find the total energy of the system
a metal rod is forced to move with constant velocity along two parallel metal rails, connected with a strip of metal at one end. what is the current in amperes in the rod
The escape speed from a distant planet is 39 km/s. If the acceleration of gravity on the planet is 14.5 m/s^2, what is the radius of the planet
A 100kg elevator starts from rest. It moves upward for 4s with constant acceleration until it reaches its crusing speed of 2 m/s. What is the average power of the elevator during this time interval
A piano string having a mass per unit length equal to 4.00 × 10-3 kg/m is under a tension of 1100 N. Find the speed with which a wave travels on this string.
q1. a rock of mass m 1.7 kg is tied to a string of length l 1.6 m and is twirled in a vertical circle. the speed v of
What is the height of the hill . Find the coefficient of kinetic friction between flight bag and floor.
How does size effect fluorescence or emission from quantum dots and what you know about single quantum dot experiments for Nitride based quantum dot materials - as outlined in the lectures
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