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A baseball player hits a homerun, and the ball lands in left-field seats, 7.5m above point at which it was hit. It lands with a velocity of 36m/s at angle of 28 degrees below the horizontal. The positive directions are upward and to the right. Ignoring air resistance, find the magnitude and direction of the inital velocity with which the ball leaves the bat.
A 27-ft chain with mass density4 lb/ft is initially coiled on the ground. How much work in ft-lbs is performed in lifting the chain so that it is fully extended (and one end touches the ground
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
Calculate the maximum speed in m/s that the caravan can go round the corner without overturning or sliding.
Radiation from the Sun reaching Earth (just outside the atmosphere) has an intensity of 1400 W/m2. Estimate what would the intensity be at Venus
In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using only his teeth. How much work was done on the object by Arfeuille in this lift, assuming the object was lifted at constant velocity?
If a simple pendulum with length 1.5m makes 72 oscillations in 180 s, what is the acceleration of gravity at its location
In a 6.5×10?3-m3 volume of ideal gas at the pressure of 2.7×106 Pa, How many molecules are in the sample
A bowling ball of mass 7.00kg is rolling at 3.00m/s along a level surface. Calculate the ball's rotational kinetic energy
A converging lens (f = 11.4 cm) is located 33.0 cm to the left of a diverging lens (f = -5.4 cm). A postage stamp is placed 36.6 cm to the left of the converging lens. Find the overall magnification.
We want to design a freeway off ramp that has a radius appropriate for the posted speed. What is the radius of the curved exit ramp such that the car does not skid off the ramp
The car encounters a loop of radius R = 18 m at ground level. As you will learn in the course of this problem, the initial height 54.00 m is great enough so that the car never loses contact with the track.
A rocket powered sled accelerates uniformly from 12m/s to 115m/s while undergoing a straight line path displacement of 225m. What is the acceleration of the sled
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