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A ball is attached to a center post with a string that is 0.587 m long. The ball is moving in a circle on a frictionless table top at a speed of 1.43 m/s with a radius of 0.587 m. What is the centripetal acceleration of the ball?
A spaceship moves past you at speed v. You measure the ship to be 287 m long, whereas an astronaut on the ship measures a length of 380 m. Find out v.
1 once the simulation opens click on lsquoshow both for velocity and acceleration at the top of the page. now
A setup similar to the one shown in the figure below is often used in hospitals to support and apply a horizontal traction force to an injured leg. What is the traction force exerted to the right on the leg
A person bounces up and down on a trampoline, while always staying in contact with it. The motion is simple harmonic motion, and it takes 1.52 s to complete one cycle. The height of each bounce above the equilibrium position is 38.0 cm. Decide the am..
Suppose that a simple pendulum consists of a small 58.0 g bob at the end of a cord of negligible mass. What is the pendulum's length
For exercise, a 60 kg athlete runs up a 10-m high hill in 30 seconds. Assume the efficiency of the human body is 25%. Determine her metabolic power
An automobile engine is initially rotating at 200 rad/sec. It is then turned off and takes 3.0 second to come to a complete stop. Find what is the angular acceleration of the engine
A potato cannon is used to launch a potato on a frozen lake. The mass of the cannon, Mc, is 10.kg, and the mass of the potato, Mp, is 0.850kg. find the direction and the magnitude of the cannon's velocity
two particles with electric charges q and ?3q are separated by a distance of 0.8 m. a if q 2.2 c what is the electric
Rotates a 1.00 kg discus along a circular path of radius 1.04 m. The maximum speed of the discus is 17.0 m/s. Find out the magnitude of the maximum radial acceleration of the discus.
A 1.50 kg mass is hung from a vertical spring with k=30.0 N/M, what is the magnitude and direction of the tensile force acting on the spring
When a voltage of 12.0 V is applied across the two ends of a cylindrical wire of length l, radius r and resistivity ?, an electric current of 1.0 A is measured. Then the same voltage is applied to a second wire with length of 2l, radius of 5r and res..
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