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A car is designed to get its energy from a rotating flywheel with a radius of 2.25 m and a mass of 550 kg. The flywheel can be considered as a uniform thin cylinder. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4600 rev/min. What is the kinetic energy stored in the flywheel? For this park i got 161525033 J and this was correct but I can't get part B which is.. B.) If the flywheel is to supply energy to the car as would a 20-hp motor, find the length of time the car could run before the flywheel would have to be brought back up to speed.
When winter arrives, the towers stay the similar distance apart and the bridge deck keeps the similar shape as its expansion joints open. When the temperature drops to -10.0°C, what is the tension in the wire? Take Young's modulus for steel to be ..
In the figure below, the converging lens' focal length is 14.4 cm, d = 13.6 cm, and the diverging lens' focal length is -14.1 cm. Where is the image formed by the converging lens,
A disk with the radius 0.60 m begins at rest and is then spun up to a high speed by applying an angular acceleration of 0.25 rad/s^2 for 20 seconds. What is the final angular velocity of the disk
A 0.20 kg hockey puck slides across a frictionless ice rink at a constant speed of 25 m/s. Ignoring air resistance, what is the work done on the puck while it is sliding
A 10.0 kg ball rests suspended by the 5.0 m long weightless string. find The maximum deflection angle for the large ball
A father pulls his children in a wagon for 25 minutes covering 1.25 miles on a level sidewalk. What is the average horsepower required
The focal length of an objective lens is 4.60mm . The image formed by this lens is 145mm from its focal point. find the magnitude of the angular magnification of the microscope
You push a box up a ramp inclined at 26.2o using a force of 230.0N, for a distance of 10.9 m. How much work do you do in the horizontal direction
Sketch a principle ray diagram showing the formation of the image. compute the position, size, orientation (erect or inverted), and nature (real or virtual) of the image.
The acoustical system is driven by speaker emitting a 432Hz note. If destructive interference occurs at a particular instant, by what least amount amount must the difference of two path lengths in the U-shaped tube be increased so as to hear const..
A 35-turn circular coil of wire has a diameter of 0.57 m. find the strength of the average emf generated in the coil
question1assume you had done the latent heat of fusion experiment with ice that was considerably colder than 0 degc.
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