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A spring with a spring constant of 230.6 N/m is compressed by 0.251 m. Then a steel ball bearing of mass 0.0441 kg is put against the end of the spring, and the spring is released. What is the speed of the ball bearing right after it loses contact with the spring? (The ball bearing will come off the spring exactly as the spring returns to its equilibrium position. Assume that the mass of the spring can be neglected.)
A 10.0 g piece of clay is launched horizontally at 108-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 148 N/m
A jet with mass m = 50000.0 kg jet accelerates down the runway for takeoff at 1.7 m/s2. What is the net horizontal force on the airplane as it levels off
The power output of a car engine running at 2900 rpm is 300 kW. How much work is done per cycle if the engine's thermal efficiency is 10.0%
Power transmission lines often use a form of electric current called alternating current, but in many regions, such as the Province of Quebec, high-voltage direct-current lines are used instead. What is the power loss due to resistance in the line
Suppose you have a spherical balloon filled with air at room temperature and 1.0 atm pressure; its radius is 18cm. what's the balloon's new radius
A cardinal (Richmondena cardinalis) of mass 4.30×10-2 and a baseball of mass 0.14 have the equal kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of baseball's momentum.
What is the magnitude of the electric field near the surface of a uniformly charged conducting plane,if the plane is a square of sides 14.0cm and carries a charge of 28.0nC? What is the force between the two planes if a plane with a charge of equa..
You've decided to protect your house by placing a 5.8-m -tall iron lightning rod next to the house. What minimum diameter must the rod have
A skateboarder shoots off a ramp with a velocity of 5.7 m/s, directed at an angle of 52° above the horizontal. The end of the ramp is 1.4 m above the ground. how far is this point horizontally from the end of the ramp
A microscpe objective with a 5 mm focal length is used toproject the image of an illuminated object 0.1mm high onto a screen1m from the objective. what is the height of the image
a rock climber stands on top of a 52 m high cliff overhanging a pool of water. he throws two stones vertically downward
Two relativistic rockets move toward each other. As seen by an observer on earth, rocket A, of proper length 500m, travels with a speed of .8c while rocket B, of proper length 1000m travels with a speed of .6c.
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