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A sanding disk with rotational inertia 8.7 x 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of magnitude 34 N·m about the central axis of the disk. About that axis and with torque applied for 40 ms, what is the magnitude of the (a) angular momentum and (b) angular velocity of the disk?
A fire hose must be able to shoot a stream of water a specified height, straight up. Calculate the gauge pressure (difference between actual pressure
A car traveling at a constant speed of 23.5 m/s passes a trooper hidden behind a billboard. How long does it take the trooper to overtake the speeding car
Three sisters go skiing. Each has a mass of m = 50 kg. There are three different routes to the bottom. How fast is each sister going when she reaches the bottom
Radioactive isotopes frequently occur together in mixtures. Assume a 400g sample contains, with a half-life of 12 days, and, with a half-life of 4.5 days. If there are firstly twice as many calcium atoms as there are barium atoms, what will be the ra..
two parallel wires are separated by 6.20 cm each carrying 2.5 a of current in same direction. what is the magnitude of
john throws a baseball from the outfield from shoulder height at an initial velocity of 29.4 ms at an initial angle of
A power plant that uses the temperature gradient of the ocean has been proposed. The system is to operate between 21°C (surface temperature) and 6°C (water temperature at a depth of about 1 km).
Machined Steel Slugs. Harris, Murray, and Spear worked with a plant that manufactures steel slugs used to seal a hole in a certain type of casting.
Calculate the shear stress of the crude oil at the walls, and plotting the velocity distribution graph for the same.
A skier starts from rest at the top of a hill that is inclined at 10.5 degree with the horizontal. Determine how far does the skier move along the horizontal portion of the snow before coming to rest
Assume h'is constant for 0 ≤ t ≤ 250. Does h have any zeros? What does this tell you about the reservoirs?
A converging lens (f = 13.0 cm) is held 6.20 cm in front of a newspaper, the print size of which has a height of 2.20mm. Find (a) image distance (in cm) and (b) height (in mm) of the magnified print.
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