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A student gets his car stuck in a snow drift. Not at a loss, having studied physics, he attaches one end of a stout rope to the vehicle and the other end to the trunk of a nearby tree, L = 26m away, allowing for a small amount of slack, W = 0.980m. The student then exerts a force F on the center of the rope in the direction perpendicular to the car-tree line, If the rope is inextensible and if the magnitude of the applied force is 576N, what is the force on the car?
As part of a circuit act, a person drives a motorcycle with constant speed v around the inside of a vertical track of radius r. find the normal force exerted on the motorcycle
A 82-kg fisherman in a 114-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 4.6 m/s, find the velocity of the boat after the package is thrown
Presume electrons move through a copper wire at speed v. Call the linear charge densities in the Earth reference frame Ep for the fixed positive ions in the wire and En for the (negative) electrons.
An 91-g arrow is fired from a bow whose string exerts an average force of 100N on the arrow over a distance of 82cm
Kim says that she was less than 10 ft away from the president when she took a picture of him with her 53-mm focal length camera lens. How close was Kim to the president when she took the picture
If you were on a spaceship traveling a 0.5c away from a star, at what speed would the starlight pass you
A boat moves through the water of a river at 9 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 1.9 m/s, how long does it take the boat to make a round trip consisting of a 225 m displacement d..
Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.30*1011 m apart. The largerof the two stars has a mass of 3.40*1030 kg, and its centeris 2.50*1011 m from the system'scenter of mass.
a parallel plate capacitor is immersed in sea water. find the ratio of rms conduction current to rms displacement
a sphere of radius a in free space is nonuniformly charged over its surface such that the charge density, Compute the total charge of the sphere
Evelyn pulls with a force of 150N directly east. Sara pulls with a force of 350N directly southeast (135o clockwise from north). What is the resultant force from the three forces.
A typical capacitor in an MP3 player has C =0.10 µF. If a charge ±8.7 µC is placed on the plates, what is the voltage across the capacitor?
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