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A futuristic design for a car is to have a large disk -like flywheel within the car storing kinetic energy. The flywheel has mass 370 kg with a radius of 0.50 m and can rotate up to 200 rev/s. Assuming all of this stored kinetic energy could be transferred to the linear velocity of the 1500-kg car, find the maximum attainable speed of the car.
A charged particle moves through a velocity selector at a constant speed in a straight line. Find the charge-to-mass ratio of the particle
Calculate the temperature at which a tungsten filament that has an emissivity of 0.50 and a surface area of 3.9 10-5 m2 will radiate energy at the rate of 35 W in a room
Compute the force of tension or compression
An adult exerts a horizontal force on a sewing that is suspended by a rope of length L, holding it at an angle x with the vertical. The child in the swing has a weight W and dimensions that are negligible compared to L.
A box weighing 900 N rests on a surface. A force of 500 N is pushing on the side of the box. find The magnitude of static friction acting on the box
A kg steel ball strikes a wall with a speed of m/s at an angle of with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for s, what is the average force exerted on the ball by the wall.
Green light (? = 546 nm) strikes a single slit at normal incidence. What width slit will produce a central maximum
A child rides a toboggan down a hill that descends at an angle of 18.6? to the horizontal. The hill is 37.6 m long. find the vertical component of the child's displacement
An object 5.00 mm tall is placed 6.00 cm to the left of a converging lens of focal length 20.0 cm. How far away from the lens is the image formed
A friend speeds by you in her spacecraft at a speed of 0.770 c. It is measured in your frame to be 4.70m long and 1.45m high. What will be its length at rest
Consider a damped oscillator with m=0.2 kg, b= 4 N-m^-1 sec and k= 80N/m. Suppose that this oscillator is driven by a force F=Fo cos wt, What is the mean power input
(a) A clear image of an object is formed on the retina of a human eye. As the object moves closer to the eye, for a clear image to still be formed on the retina.
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