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A baseball (m=140g) traveling 32m/s moves a fielders glovebackward 25cm when the ball is caught. What was the average force exerted by the ball on the glove?
A roller coaster is pulled up a hill of height 95m before being released to coast down a ramp that is inclined at 56 degrees above the horizontal. find the magnitude of average frictional force on the car
A cart of mass m moves with a speed v on a frictionless air track and collides with an identical cart that is stationary. what is the final kinetic energy of the system
A block of mass 0.434 kg is hung from a vertical spring and allowed to reach equilibrium at rest. As a result the spring is stretched by 0.631 m. Find the spring constant.
A block of mass 20kg is sliding down an incline plane with no friction. Find the normal force and the acceleration of the object
Two 1.5cm -diameter disks face each other, 2.0mm apar, What launch speed must the proton have to just barely reach the positive disk
A model of the stretching vibrations of a polyethylene chain may be made by considering a linear chain of identical masses M connected by springs of alternating force constants C1 and C2. Calculate the characteristic frequencies of such a chain is th..
at what height above the earth is the acceleration due to gravity 10% of its value at the surface, find the speed of a satellite orbiting at that height?
A mass is stretched 4 centimeters from the equilibrium position of a spring. If the displacement is doubled, what can be concluded about the restoring force? A. It is halved. B. It is doubled. C. It stays the same. D. It is increased by 4. E. It i..
The speed of light in vacuum is186,000 mi/s = 3.00 × 108 m/s . Use this fact to find the number of kilometers in a mile. A rectangular prism has the following dimensions: 11= 45.0 cm, 12= 105cm, 13= 48.0 cm. What is its volume in cm3? What is its vol..
The electric field on the axis of a uniformly charged ring has magnitude 400kN/C at a point 5.6cm from the ring center, Find the rings radius and charge
A catcher catches a fastball going 95mi/hr and recoils 12cm while stopping the ball in 0.005s. (mass of the ball is 280g). find the average force the ball exerts on the hand & glove
A six-loop coil of current-carrying wire spanning an area of 0.0249 m2 has a magnetic dipole moment of 6.35e?3 A·m2. What current is flowing through the wire
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