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A baseball with a mass of 0.15 kilograms collides with a bat at a speed of 40 meters/second. The duration of the collision is 8.0 A????1 10-3 seconds. The ball moves off with a speed of 50 meters/second in the opposite direction. What is the value of the force?
An object with a charge of -3.8 µC and a mass of 0.046 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to its weight. find the direction and magnitude of its acceleration
A friend who is 480 cm tall stands 2.0m from a plane wall mirror. How tall must the mirror be if you are to see all of your friend in the mirror
The lifting force exerted on an airplane wing varies jointly as the area of the surface and the square of the planes velocity. Obtain the lift if the speed is decreased to 80 mph
The minute hand of a wall clock measures 14 cm from its tip to the axis about which it rotates. The magnitude and angle of the displacement vector of the tip are to be determined for three time intervals.
A 7-turn coil encloses a square area measuring L = 0.31 m on each side, evaluate the magnitude of the torque on the coil
A 2kg mass is loaded into a spring cannon. The cannon's spring has a constant k = 4000 abd the spring is compressed 0.8m. How far does it move before it comes to a stop
A particle with a mass of 2.0×105kg and a charge of +2.9C is released in a (parallel plate) uniform horizontal electric field of 15N/C. How far horizontally does the particle travel in 0.40s? What is the horizontal component of its velocity at that p..
We want to support a thin hoop by a horizontal nail and havethe hoop make one complete small-angle oscillation each 2.0 s. What must the hoop's radius be
A ball is dropped from the top of a 48.0 meter high cliff. Obtain how far from the base did this happen
q1. an 1100- car is held in place by a light cable on a very smooth frictionless ramp. the cable makes an angle of 31.0
A camera is equipped with a lens with a focal length of 23 cm. how far from the film should the lens be placed
A spring with a spring constant of 1.9×102N/m is attached to a1.6 kg mass and then set in motion. What is the frequency of the vibration? What is the period of the mass-spring system?
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