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1. A bowling ball has a mass of 4.0 kg, a moment of inertia of 1.6x10 to the - 2nd kg.m2 and a radius of .20m. If it roll down a horizontal lane without slipping at a linear speed of 4.0 m/s, what is its total kinetic energy?
2. A gyroscope has a moment of inertia of .14 kg.m2 and has an initial angular velocity of 15 rad/s. Friction in the bearing causes its velocity to reduce to zero in 30s. What is the value of the frictional torque?
3. A rotating flywheel can be used as a method to store energy. If it is required that such a device be able to store up to a maximum of 10x10 to the 5th J when rotating at 400 rad/s, what moment of inertia is required?
During practice, a soccer player kicks a ball, giving it a 32.5 m/s initial speed. It travels the maximum possible distance before landing down field. How far did the ball travel
The terminal voltage of a certain battery is measured with the battery disconnected and is found to be 6.18 V. The internal resistance of the battery is1.06 Ω. Find the voltage across thebattery terminals when there is a current of 1.92 A from the ne..
(a) Find the magnitude of the worker's force. How much work is done on the block by? (b) The worker's force,
A 180g block hangs from a spring with spring constant 6.0 N/m. At the block is 31cm below the equilibrium point and moving upward with a speed of 98.0cm/s. What is the block's position at t = 9s.
Jim's dog Sparky runs 55.0m northeast to a tree, then 70.0mwest to a second tree, and finally 20.0m south to a third tree
The energy of the first excited state of a hydrogen atom is -0.34eV +/- 0.0004eV. What is the minimum average lifetime for this state
A skier of mass 64 kg is pulled up a slope by a motor-driven cable. What power (expressed in hp) must a motor have to perform this task
A 330 g air track cart on a horizontal air track is attatched to a string that goes over a pulley with a moment of inertia of 5.00*10^-6 kg*m^2 and a radius of 1.35 cm. Find the acceleration of the cart and the hanging mass
An ultrasound unit is being used to measure a patient's heartbeat by combining the emitted 2.0 MHz signal with the sound waves reflected from the moving tissue of one point on the heart. What is the maximum speed of the heart tissue
moves through its horizontal position at (B) and up to (C) where it stops with 2 = 109.0o, and then falls back down. Friction at the pivot is negligible. Compute the speed of the CM at (B).
suppose that you are climbing a hill whose shape is given by the equation z 1000 - 0.01x2 - 0.02y2 and you are
After flying for 15 min in a wind blowing 42 km/h at an angle of 28° south of east, What is the speed of the airplane relative to the air
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