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A 80 g disk sits on a horizontally rotating turntable. The turntable makes exactly3revolutions each second. The disk is located 15 cm from the axis of rotation of the turntable.
a) What is the frictional force acting on the disk? N?
b) The disk will slide off the turntable if it is located at a radius larger than 21 cm from the axis of rotation. What is the coefficient of static friction?
A double convex lens has faces of radii 18.0 cm and 20.0 cm. When an object is placed 24.0 cm from the lens, Determine the focal length of the lens
A stationary radar operator determines that a ship is 11.00 km south of him. An hour later the same ship is 24.0 km southeast. If the ship moved at constant speed and always in the same direction, what was its velocity for the duration of this tim..
A stone is dropped from a building 54 m high. How long will it take the stone to reach the ground
A baseball bat is 1 meter long and is made of wood with density 525 kg/m^3. If the bat is held such that the point of rotation is 5.0 cm from the thin end, what is the rotational inertia of the bat
The toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its swim bladder, used as an amplifier. Calculate the intensity of the sound wave emitted
The first-order bright fringe is a distance of 4.84 from the center of the central bright fringe. For what wavelength of light would the first-order dark fringe be observed at this similar point on the screen.
two masses are joined together by a massless rod of length 0.8 m. What is the rotational kinetic energy of the system
A 6.00 uC charge is placed at the origin and a second charge is placed on the x-axis at x = 0.300 m. what is the force on the charge at the origin
A roller-coaster car moves 227 ft horizontally and then rises 115 ft at an angle of 31.0° above the horizontal. What is its displacement from its starting point
A train traveling at a constant speed rounds a curve of radius 220 meter. A lamp suspended from the ceiling swings out to an angle of 16 degree throughout the curve. Evaluate what is the speed of the train
A particular object weighs 343 N in air and 144 N when immersed in alcohol of density 0.7 g/cm3. What are the volume and the density of the object
A 2kg block is pushed with a horizontal force (not parallel to the incline) of 40N at a constant speed for 5m along an inclined plane of 37 degrees. What is the value of the the coefficient of kinetic friction?
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