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A football punter accelerates a football from rest to a speed of 7 m/s during the time in which his toe is in contact with the ball (about 0.16 s). If the football has a mass of 0.50 kg, what average force does the punter exert on the ball?
A bicyclist rides 4.9 km due east, while the resistive force from the air has a magnitude of 3.4 N and points due west. Find the work done by the resistive force
A bicycle wheel of radius 0.70m is rolling without slipping on a horizontal surface with an angular speed of 4Pi rad/s, What is the tangential deceleration of the bicycle
You have a wire of length L = 1.9 m for making a square coil of a dc motor. Find the maximum torque exerted on the coil
A very large number (N+1) polaroids are arranged in a sandwich.
Two circular disks, each of area 1.90E-4 m2, are situated parallel to one another. The distance between them is small compared with their radii, Compute the force exerted by one on the other
The vertical component of this force is 128 newtons, as the horizontal component is 145 newtons. Calculate the magnitude of F.
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
An inductor in the form of a solenoid contains 410 turns and is 12.0 cm in length. What is the radius of the solenoid
A photoelectric-effect experiment finds a stopping potential of 1.93 V when light of 200 nm is used to illuminate the cathode, From what metal is the cathode made
if a force of 500n is needed to stretch a spring 2 cm, what force is needed to stretch 5cm
Consider a balloon being filled up with oxygen. You have approximately 30 moles of oxygen gas in this balloon with volume 1.3 m^3. compute the temperature of the molecules
Two football players are moving toward each other in a straight line. Number 56 has a mass of 120 kg, Determine the velocity (magnitude and direction) of players, after the collision, before they hit the ground
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