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A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.50 m and a mass of 575 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4,500 rev/min.
(a) Find the kinetic energy stored in the flywheel.
___________J
(b) If the flywheel is to supply energy to the car as a 10.0-hp motor would, find the length of time the car could run before the flywheel would have to be brought back up to speed.
___________h
If the mass of both weights is 225 gm, the first mass is located 20 north of east, the second mass is placed 20 south of east, and the transducer sensitivity is 0.5 volts/Newton, how large a voltage do you expect to measure? suppose the transducer..
Assume a rocketship in deep space moves with constant acceleration equal to 9.8 m/s2, which gives the illusion of normal gravity during the flight. Estimate the time required by a rocketship to attain the speed of light and the distance travelled t..
Two boat landings are 1.0 km apart on the same bank of a stream that flows at 1.8 km/h. What is the speed of the boat relative to the water
A 1000-kg sports car (including the driver) crosses the rounded top of a hill (radius = 90.0m ) at 22.0m/s. Determine the normal force exerted by the road on the car
Find the charge on sphere A. How far from the dog will the suitcase land.
Illustrate what is the magnitude of the change in momentum of the ball while in contact with the bat if the ball leaves with a velocity of (a) 18 m/s, vertically downward, and (b) 18 m/s, horizontally back toward the pitcher?
A blacksmith heats a 1.9 kg iron horseshoe to 480 degree C, then plunges it into a bucket containing 10kg of water at 20 degree C. The specific heat of iron is 447 J/kgK. What is the final temperature.
A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 56%. What is the warmer temperature
A sinusoidal wave travels along a stretched string. A particle on the string has a maximum velocity of 0.900m/s, What is the frequency and amplitude of the wave
A 700 N window washer is standing on a uniform scaffold supported by a vertical rope at each end. The scaffold weighs 200 N and is 3 m long. what is the force in each rope when washer stands 1 m from one end.
One skater throws a .3 kg ball at 5 m/s to his friend, who catches it and throws it back at 5 m/s. When the first skater has caught the returned ball, Illustrate what is the velocity of each of the two skaters?
An airplane increases its speed from 100 m/s to 160 m/s, How much time does it take for the complete increase in speed
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