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A 0.175 kg baseball is thrown upward with an initial speed of 12.0 m/s.
(a) What is the force on the ball when it reaches half of its maximum height? (Disregard friction.)
_N_(upward or downward)
(b) What is the force on the ball when it reaches its peak?
A 30-kg child rides on a circus Ferris wheel that takes her around a vertical circular path with a radius of 20 m every 22 s. What is the magnitude of the resultant force on the child
You notice a group of children beside the ramp. One has a 2 kg rock tied to the end of a string that is 3 m long, What will happen if the string breaks? why?
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A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor directly below 1.6 s later. How deep is the ocean at this point
You shine a laser on a plastic prism made from an unknown material and measure the angles relative to the normal that the light takes both inside and outside the medium. What is the index of refraction of the plastic object
q1. a 22 kg girl slides down a playground slide that is 8.50 m high. when she reaches the bottom of the slide her speed
Assuming that the magnetic field of the earth is like that of a short dipole buried at the center of the earth, calculate the dipole moment of the earth
A converging lens with a focal length of 31 cm is used to form an image on a screen that is 2.7 m to the right the lens. Where must the object be placed
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carnival merry-go-round rotates about a vertical axis at a constant rate, How far is the man from the center of the merry-go-round
q1. a typical major league fastball is thrown at about 99 mph and with a spin rate of 103 rpm. if the distance between
The size of an oil container measures 30m in length x 30m in width and a height of 10 m. Estimate the density of the crude oil inside the container
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