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A good baseball pitcher can throw a baseball toward homeplate at 85mi/h with a spin of 1800rev/min. How many revolutions does the baseball make on its way to home plate? For simplicity,assume that the 60 ft path is a straight line.
The best leaper in the animal kingdom is the puma, With what speed must the animal leave the ground to reach that height
At the end of an amusement park ride, you want the gondola to stop without the acceleration exceeding 2 g's. what is the maximum allowed braking force
A partcile is moving along the x-axis has a position given by x=(24t-2.0t^3)m, where t is measured in seconds. What is the magnitude of the acceleration of the particle at the instant when its velocity is zero?
A tank, full of liquid of depth h, and top surface area A, is at rest on a frictionless table. Find the radius of the hole in terms of the h, k, ?, x, and g the acceleration of gravity
A bat crashes into the vertical front of an accelerating subway train. what is the minimum acceleration of the train
On one of the shelves in your physics lab is displayed an antique telescope. A sign underneath the instrument says that the telescope has a magnification of 20, what is the focal length fe of the eyepiece
A light string is wrapped around the outer rim of a solid uniform cylinder of diameter 75.0 cm that can rotate without friction about an axle through its center. What is the mass of the cylinder
When the temperature of a coin is raised by 71.8 C°, the coin's diameter increases by 2.11 x 10-5 m. find the coefficient of linear expansion
Pluto spins about its axis with a period of approximately 6.39 Earth days. What is the rotational angular speed of Pluto
A person is riding a bicycle, and its wheels have an angular velocity of 11.5 rad/s. How much time does it take for the bike to come to rest
A loudspeaker of mass 19.0 kg is suspended a distance of h = 2.00m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l= 3.50m. Illustrate what is the tension T in each of the cables?
A swimmer runs horizontally off a diving board with a speed of 3.44m/s and hits the water a horizontal distance of 1.74m from the end of the board. How high above the water was the diving board
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