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A flywheel of mass 185 kg has an effective radius of 0.60 m (assume the mass is concentrated along a circumference located at the effective radius of the flywheel). (a) How much work is done to bring this wheel from rest to a speed of 120 rpm in a time interval of 35.0 s? (in kg please) (b) What is the applied torque on the flywheel (assumed constant)? (in N * m please)
Consider an isolated hydrogen atom of mass 1.66x10^(-27) kg.Let an upwardly directed laser beam emitting 1 eV photons be focused in such a way that the full momentum of each of its photons is transferred to the atom. Find the average upward force ..
The Navy operated a "man-rated" centrifuge in Warminster, PA. It was used for testing with the astronauts of the Mercury, What is the period of the gondola at that speed
A ball is thrown horizontally from the top of a 75 m building and lands 130 m from the base of the building, What is the vertical component of the velocity just before the ball hits the ground in m/s
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 240 kg · m2, What is the new angular speed of the merry-go-round
A small plastic ball of mass 9.44 × 10-3 kg and charge +0.181C is suspended from an insulating thread and hangs between the plates of a capacitor, What is the magnitude of the charge on each plate
A ball is thrown vertically upward from the ground with an initial speed of 15.00 m/s. How long does it take the ball to reach its maximum altitude
A uniform circular disk has radius 35 cm and mass 350 g and its center is at the origin. Then a circular hole of radius 8.75 cm is cut out of it. Find the moment of inertia of the modified disk about the Z-axis
1300-L rigid tank contains 16 kg of refrigerant-134a vapor at 320 kPa. The refrigerant is cooled until the temperature reached -14oC. Determine the internal energy change for this process
Unpolarized light passes through two polaroid sheets. What fraction of the initial light is transmitted
A 650 kg elevator starts from rest. It moves upward for 4.50 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. What is the average power of the elevator motor during this period
A charge +q is located at the origin, while an identical charge is located on the x axis at x = +0.76 m. Where should the third charge be located
A pesky 1.7-mg mosquito is annoying you as you attempt to study physics in your room, What is the maximum uncertainty in the horizontal position of the mosquito
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