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The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 117 kgand radius R = 80 cm.The engine rotates the wheel at 540 rpm. In an emergency, to bring the engine to a stop, the flywheel is disengaged from the engine and a brake pad is applied at the edge to provide a radially inward force F = 130 N. If the coefficient of kinetic friction between the pad and the flywheel is µk = 0.2,how many revolutions does the flywheel make before coming to rest?
How long does it take for the flywheel to come to rest?
Calculate the work done by the torque during this time.
The primary coil of a transformer has 3,802 loops. The secondary coil has 602,030 loops. The primary coil has a 97 A current and 2 V. ) Determine the power of the primary coil......W. Assuming no losses, determine the power of the secondary coil......
A simple harmonic oscillator has a restoring force of 360 N/m and a mass of .59kg. What will be its maximum displacement from equilibrium
The critical angle for light traveling from a certain plastic into air is 38.0°. What is the index of refraction of the plastic
Explain how fast must the candy bar travel to have the same 106 joules in the form of kinetic energy?
By what distance has the proton been deflected sideways when it reaches the far edge of the capacitor. Assume the field is uniform inside the capacitor and zero outside the capacitor.
A 111g Frisbee is 25cm in diameter and has half its mass spread uniformly in the disk and the other half concentrated in the rim. What is the Frisbee's rotational inertia
One point-like charge of +20 nC sits at the center of a thick spherical shell of inner radius 4 cm and the outer radius 6cm. The shell is made of copper and has a net charge of -10 nC.
Dorothy is up on her 16.0m by 15.0m roof enjoying the view of Kansas. Suddenly, a strong wind blows down her ladder, leaving her stranded. Calculate the force on the roof
Consider a 1.0 g sample of carbon with 14C / 12C of 1.3 x 10-12. What is the activity of the sample
When monochromatic light is being used with a certain diffraction grating, it is found that the first-order maximum occurs at 8°. What is the highest order of maximum that can be observed
an electron and a proton are each accelerated through a potential difference of 21 million volts. find the momentum in
A woman stands on a scale in a moving elevator. Her mass is 53.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. What does the scale read during the acceleration
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