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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 520 rev/s. Assuming all of this stored kinetic energy could be transferred to the linear velocity of the 2800 kg car, discover the maximum attainable speed of the car.
Starting from rest, a 5.3 kg blockslides 2.1 m down a rough 30.0°incline. The coefficent of kinetic friction between the block andthe incline is µk = 0.436. Determine the work done by the force of gravity
A 2.30 kg object attached to a spring moves without friction and is driven by an external force given by F = (3.00 N) sin(2pt). If the force constant of the spring is 25.0 N/m, determine the period
You're designing a highway so that the maximum centripetal acceleration on a curve is no more than 1.0 m/s^2. What is the minimum curvature radius to accommodate a 100 km/h maximum speed? Please show the answer and how you got it!
The velocity of a ball changes from m/s to m/s in 0.02 s, due to the gravitational attraction of the Earth and to air resistance. What is the rate of change of momentum of the ball
Positive focal lengths correspond to _______.
A cannon, placed in the valley, fires a shell at 31 degree with respect to the horizontal line. Calculate the range of the shell
A spherical Christmas tree ornament is 3.84 cm in diameter. What is the magnification of the image of an object placed 11.1 cm away from the ornament
A conductor of uniform radius 1.20 cm carries a current of 3.00 A produced by an electric field of 120 V/m
a piston with mass m 2.0 kg in a car engine is in vertical simple harmonic motion with amplitude a 5.0 cm. if the
A worker is pulling a cart. The frictional force between the cart and the ground is 500N. What is the minimum force that must be applied by worker to move the cart.
A wind turbine with a rotor diameter of 50 m is rated at 2500 kW at a hub height wind speed of 10 m/s. Calculate the number of hours per year that the wind is below the cut-in speed
A ball is dropped from rest from the top of a building ofheight 10m. At the same instant, a second ball is projectedvertically upward from ground level, such that it has zero speed when it reaches the top of the building.
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