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Q. A baseball pitcher throws a fastball at a speed of 45.00m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it throughout an almost straight-line distance of 4.0 m. compute the acceleration; assume that it is constant and uniform.
A loudspeaker of mass 25 is suspended a distance of = 1.60 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.30.
A convex lense of focal length 18 cm is used as a magnifying glass. at what distance from a tiny insect must you hold this lense to get a magnification of 3.
A 0.350 m rod with uniform mass distribution runs along the x axis with its left end at the origin. A 1.80 m rod with uniform mass distribution runs along y axis with its top end at the origin. Find out the coordinates of the center of gravity for..
Explain an experimental method for determining the center of mass of any object, including irregularly shaped objects.
In heavy rush-hour traffic you drive in a straight line at 12 m/s for 1.5 minutes, then you have to stop for 3.5 minutes, and finally you drive at 15 m/s for another 2.5 minutes. compute the average velocity between t=0 and t=7.5 minutes.
A mass of 1.61kg stretches a vertical spring 0.31m. If the spring is stretched an additional 0.132m and released, how long does it take to reach (new) equilibrium position again.
A projectile is shot from the edge of a cliff h = 105 m above ground level with an initial speed of v0 = 135 m/s at an angle of 37.0Â ° with the horizontal.
solenoid is formed by winding 23.0 m of insulated silver (resistivity 1.59 x 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping, and insulating coat on the wire is negligibly thin.
Gold, which has a density of 19.3 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber.
A cannon ball is fired horizontally with a velocity of 600 m/s from the top of a cliff 1000 m high.
A person exerts a horizontal force of F = 169N in the test apparatus. (h = 0.32m.) Find the horizontal force M that his flexor muscle exerts on his fore arm.
A machine part is made from a uniform solid disk of radius R = 0.18m and mass M = 8.3kg. A hole of radius R/2 is drilled into the disk, with center of the hole at the distance R/2 from the center of the disk.
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