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The platter of a modern hard disk drive spins at 7.20x103 rpm (revolutions per minute).
(a) How much time, in seconds, does it take for the disk to make a complete revolution?
(b) Starting from rest, suppose the disk reaches full speed in 5.00 seconds. What is the average angular acceleration of the disk in radians per second?
(c) Assuming constant angular acceleration, how many revolutions has the hard disk turned while spinning up to its final angular velocity?
A layer of ice has formed on a small pond. The air just above theice is at -5.99 °C, the water-ice interface is at 0 °C, how thick is the layer of ice
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Assuming that f = 60 Hz, Vs = 10 volts, R = 1000 Ohms, L = 0.1 mH and C = 0.01 F, calculate the peak current through each component
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a spaceship is on a straight-line between earth and its moon. at what distance from earth is the net gravitational
A 5.7kg block attached to a spring executes simple harmonic motion on a frictionless horizontal surface. At time t=0s, the block has a displacement of -.70m, a velocity of -.80m/s and an acceleration of 2.7m/s^2. The amplitude of the motion is closes..
Lasers are used extensively in eye surgery to remove unwanted material from the eye or reshape the eye lens. If this energy is delivered to a spot on the eye that is 1.0 mm in diameter, what is the intensity during a pulse
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The length and width of a rectangular room are measured to be 3.995 ± 0.005 m and 3.050 ± 0.005 m. Calculate the area of the room
A piece of luggage is being loaded onto an airplane by way of an inclined conveyor belt. calculate the work done on the bag
31.3 million excess electrons are inside a closed surface. what is the net electric flux through the surface
A flat screen is located 0.94 m away from a single slit. Light by a wavelength of 518 nm (in vacuum) shines during the slit and produces a diffraction pattern. The width of the central bright fringe on the screen is 0.047 m. What is the width of the ..
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