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For many years, hitters have claimed that some baseball pitchers have the ability to actually throw a rising fastball. Assuming that a top major leaguer pitcher can throw a 95-mph pitch and impart an 1800-rpm spin to the ball, is it possible for the ball to actually rise? Assume the baseball diameter is 2.9 in. and its weight is 5.25 oz.
A 160-lb gymnast is executing a series of full-circle swings on the horizontal bar. determine his angular velocity and the force exerted on his hands
The three circuits below have driving Emf's with the same amplitude, 5 V. Each is driven at a fixed frequency which differs from the other two. The magnitudes of the inductive reactance in the left circuit, of the capacitive reactance in the cente..
It takes 27 days for the moon to orbit the earth in a nearly circular orbit of radius 3.80 x 105 kilometer. Determine the earth mass and compare with the value given inside the back cover of the book
A football is kicked from the ground and clears the goal post by 5 ft. How long did it take to fly through the air
A diffraction grating of 6000 lines/cm is illuminated by monochromatic light. How far from the central maximum is the first order maximum
When an archer pulls an arrow back in his bow, he is storing potential energy in the stretched bow. Compute the potential energy stored in the bow
A science student is riding on a flatcar of a train travelling along a straight horizontal track at a constant speed of 10.0 m/s. How high does she see the ball rise
The height of the space needle observation tower is 180 meters when the temperature is 0 degrees Celsius. What is the height when the temperature rises to 30 degrees celsius
Each project is expected tohave zero salvage value at the end of the project. Ueker Companyuses the straight-line method of depreciation. FIND IRR.
A juniper-wood plank measuring 0.15 ft by 1 ft by 17 ft is totally submerged in water. What is its weight? (Ib) What is the buoyant force acting on it? (Ib) What are the size and the direction of the net force on it? (Ib)
a 0.40kg soccer ball approaches a player horizontally with avelocity of 20m/s to the north. what impulse was delivered by the player
a 2.50 a current is carried by a copper wire of radius 1.0 mm. if the density of conduction electrons is 8.0e28m3 what
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