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A tennis ball may leave the racket of a top player on the servewith a speed of 67.0 m/s. If the ball'smass is 0.0600 kg and it is in contact with the racket for0.0300 s, what is the average force on the ball?
What is the electric potential energy of the system.
a car traveling east at 41.9 ms passes a trooper hiding at the roadside. the driver uniformly reduces his speed to 25.0
A small plane is flying directly west with an airspeed of 34.0 m/s. The plane flies into a region where the wind is blowing at 11.0 m/s at an angle of 33° to the south of west. what is the ground speed of the airplane
A 4.0 kg ball is on the end of a 1.6 m rope which is fixed at O. The ball is held at point A, with the rope horizontal, and is given an initial downward velocity. What is the initial velocity of the ball
The fan blades on a jet engine make one thousand revolutions in a time of 81.8 ms. What is the angular frequency of the blades
a mass of 0.30 kg is attached to a spring and is set into vibration with a period of 0.24s. what is the spring
A speedboat moves on a lake with initial velocity vector v1,x = 8.35 m/s and v1,y = -2.39 m/s, then accelerates for 6.81 seconds at an average acceleration of aav,x = -0.106 m/s2 and aav,y = 0.102 m/s2. What are the components of the speedboat\'s fin..
A plane light wave with wavelength .60 micrometers falls normally on the face of a glass wedge with reflecting angle 15 degrees. The opposite face of the wedge is opaque and has a slit of width b=10
A 8 kg stone is dropped from a height of 170 m. Find its kinetic and potential energies when it is halfway to the ground
A ball of mass m falls from height h,to height hf near the surface of the Earth, as shown at right. When the ball passes it has a speed vf. Ignore air resistance, and assume that any changes in kinetic energy of the Earth are negligible.
A bead of mass m = 6.90 kg is released from point A and slides on the frictionless track as shown in the figure below. The height of A is ha = 6.10 m. Determine the bead's speed at points B and C
Two particles each have a mass of 7.1 x 10-4 kg. One has a charge of +6.7 x 10-6 C, and the other has a charge of -6.7 x 10-6 C. How fast is each particle moving when the separation between them is one-half its initial value
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