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A skier is gliding along at 5.0 m/s. On horizontal,frictionless snow. He suddenly starts down a 11 degree incline. His speed at the bottom is 15m/s.1) What is the length of the incline?2) How long does it take for him to reach the bottom?
Raindrops fall 1000 m from a cloud to the ground. If they were not slowed by air resistance, how fast would the drops be moving when they struck the ground
Two identical probes are sent along the same path toward a neutron star. A neutron star is very dense, packing as much as 2 solar masses into a sphere with a radius on the order of 10 km. At the moment shown, the two probes are 59.7 km and 133 km ..
a block having mass m= 10kg rests on a horizontal surface. Us+.4 and Uk=.2. what is the friction force if an external horizontal force of 32N is exerted on the block
A slinky with N even loops of area A is L long. You hook it up to a circuit and increase the current at a rate of 2.0 A/s, Now calculate the new induced EMF
A section of hollow pipe and a solid cylinder have the same radius and mass. Which has the most rotational kinetic energy
A small button placed on a horizontal rotating platform with diameter 0.328 will revolve with the platform, How far from the axis can the button be placed, without slipping, if the platform rotates at 62.0
A 70-kg bicyclist coasts down a hill that makes a 10degree angle with the horizontal at a speed of 10 m/s. how fast can he go up the hill
With brakes fully applied, a 1430kg car decelerates from a speed of 74km/hr. What is the work done by the braking force in bringing car to a stop.
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Because of these charges, What is the magnitude of the electric field in the membrane
A particle with a charge of +8.4 µC and a speed of 45 m/s enters a uniform magnetic field whose magnitude is 0.32 T. find the magnitude and direction of the magnetic force on the particle
A flight attendant pulls her 73 N flight bag a distance of 245 m along a level airport floor at a constant velocity. The force she exerts is 45 N at an angle of 54° above the horizontal.
At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.8 m until, Find the change in its velocity during the turn
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