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A wheel rotates about a fixed axis with an initial angular velocity of 25 rad/s. During a 4.0-s interval the angular velocity decreases to 10 rad/s. Assume that the angular acceleration is constant during the 4.0-s interval. How many radians does the wheel turn through during the 4.0-s interval?
Estimate the radiation pressure due to a 100 W bulb at a distance of 8.0 cm from the center of the bulb
A pickup truck is moving at 25 m/s when suddenly the brakes are applied and the truck comes to a stop in 4.7 s. how much time elapses before the tool box strikes the cab
The track is 10.00 cm wide, 5.00 m long, and 2.78 m high, and is solid. The runway is cut such that it forms a parabola by the equation y = (x - 5)2 / 9
Assuming wind forces can be neglected, what is the highest that one can make a solid concrete tower of uniform cross-section (Take the density of concrete to be 2,400 kg/m^3)
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.2×106 , What is the total work they do on the supertanker
A high-speed flywheel in a motor is spinning at 450 rpm when a power failure suddenly occurs. The flywheel has mass 40.0 kg and diameter 72.0 cm. How many revolutions would the wheel have made during this time
A 1.10 kg mass is at the center of a uniform spherical shell of mass 1.09 1020 kg and radius 1.05 106 m. Find the resultant gravitational force on the mass
two blocks are connected over a pulley. The mass of block A is 7.9 kg and the coefficient of kinetic friction between A and the incline is 0.24. What is the mass of block B
The aorta is a major artery, rising upward from the left ventricle of the heart and curving down to carry blood to the abdomen and lower half of the body. obtain the magnitude (in m/s2) of the blood's centripetal acceleration
When a current flows in an aluminum wire of diameter 2.13 mm, the drift speed of the conduction electrons is 1.83 × 10-4 m/s. What is the electron current in the wire
Josh starts his sled at the top of a 3.0 m high hill that has a constant slope of 25°. After reaching the bottom, he slides across a horizontal patch of snow. How far from the base of the hill does he end up
For the process where wk(closedsystem)=778 ft*lbf/lbm and ?u= 0.75 Btu/lbm, determine the heat transferred per pound mass
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