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Professional baseball pitchers can deliver a pitch which can reach the blazing speed of 100 mph (miles per hour). A local team has drafted an up-and-coming left handed pitcher who can consistently throw at 93.00 mph. Assuming the ball has a mass 142.0 g and has this speed just before a batter would make contact, how much kinetic energy does the ball have?
How high would the ball need to be dropped from to attain the same energy?
Jupiter has mass M, radius R and orbital period T, while the Sun has mass m, radius r and orbital period t. Calculate the ratio of the centrifugal acceleration to the gravitational acceleration at the equator of
When the plane atats to accelerate for take off, a man is holding the pocket watch steady by its 20cm chain, Estimate the takeoff velocity of the plane
A catcher catches a fastball going 95mi/hr and recoils 12cm while stopping the ball in 0.005s. FIND the average force the ball exerts on the hand & glove
A crate of mass 10.3 kg is pulled up a rough incline with an initial speed of 1.51m/s. The pulling force is 97N parallel to the incline, which makes an angle of 20.3 ° with horizontal. The coefficient of kinetic friction is 0.400, and the crate is..
A 4.7 e2 kg hot-air balloon takes off from rest at surface of the earth. The nonconservative wind and lift forces take the balloon up, doing +9.70 multiplied by 104J of work on the balloon in the process. At what height above the surface of the ea..
At one point in a pipeline, water's speed is 3.30 m/s and the gauge pressure is 4.00×10^4 Pa. Find out the gauge pressure at a second point in the line 13.0 m lower than the first if the pipe diameter at the second point is twice that at the first.
The train on the right accelerates leftward at 0.82 m/s2.How far does train on the left travel before the front ends of the trains pass.
The bonds are dated April 1, 2000, and are issued on that date. The discount rate of interest for such bonds on April 1, 2010, is 10%. Illustrate what cash proceeds did Harding Company receive from issuance of the bonds?
The magnetic field perpendicular to a single 14cm diameter circular loop of copper wire decreases uniformly from 0.750 T to zero. If the wire is 2.25 mm in diameter, how much charge moves past a point in the coil throughout this operation.
question1the westin stamford hotel in detroit is 228 m tall. assume a piece of ice that initially has a temperature of
Draw the field lines for two infinitely long wires one running along the y axis and one running along the x axis, both charged uniformly with lambda C/m. Make an expression for the electric field E at any point in the xy plane in terms of x and y...
A small ball of 53 grams is suspended from a string of length 86 centimeters and whirled in a circle lying in the horizontal plane. If the string makes and angle of 31 degrees with the vertical, find out the centripetal force experienced by the ball...
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