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Question: A ceiling fan with 90-cm-diameter blades is turning at 65 rpm. Suppose the fan coasts to a stop 26 s after being turned off.
a) What is the speed of the tip of a blade 10s after the fan is turned off?
b) Through how many revolutions does the fan turn while stopping?
A cooking vessel on a slow burner contains 11.2 kg of water and an unknown mass of ice in equilibrium at 0°C at time t = 0. determine the initial mass of ice
For the Atwood's machine, suppose the masses have an initial speed of v = 0.22 m/s and that m2 is moving upward. How high does m2 rise above its initial position before momentarily coming to rest, given that m1 = 3.5 kg and m2 = 3.1 kg.
A person slowly lowers a 3.6 Kg crab trap over the side of a dock, What torque does the trap exert about the person's shoulder
Two 30 kg masses have velocities (in m/s) of vector v 1 = 10 i(hat) - 20 j(hat), Determine the velocity of the center of mass of the system
A man slides along a long water slide and then being launched into the air to land in a water pool. Find the magnitude of the velocity at landing
An MSU linebacker of mass 118.0 kg sacks a UM quarterback of mass 87.0 kg. Just after they collide, they are momentarily stuck together, how fast was the linebacker moving just before the collision
Two small nonconducting spheres have a total charge of 90.0. When placed 1.14 apart, the force each exerts on the other is 11.8 and is repulsive. What is the charge on each
A 0.2-kg steel ball is dropped straight down onto a hard, Determine the magnitude of the impulse delivered to the floor by the steel ball
A 8 kg stone is dropped from a height of 170 m. Find its kinetic and potential energies when it is halfway to the ground
A thermos contains 140 cm3 of coffee at 85° C. To cool the coffee, you drop two 15-g ice cubes into the thermos. What is the final temperature of the coffee
A 4kg parcel of dry air initially at p=950mb and T=295K compresses isobarically to one third of its original volume, Calculate the final temperature and the work done
A car is driving directly north on the freeway at a speed of 118 km/h and a truck is leaving the freeway driving 89 km/h in a direction that is 39° west of north
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