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A ball of mass 1.5 kg is thrown upward. It leaves the thrower's hand with a velocity of 10 m/s. The net impulse on the ball is due to "two" forces acting on the ball - the hand acting upward, and gravity acting downward. Calculate the average force exerted by the hand on the ball while the ball is slowing down.
An un-tethered block sits on a flatbed truck as it accelerates up an incline that makes an angle of 15° with respect to the horizontal. What is the coefficient of static friction between the truck and the block
The position of an object connected to a spring varies with time according to the expression x = (5.8 cm) sin(9.5?t), Find the period of this motion
q1. as part of a safety investigation two 1300kg cars travelling at 18ms are crashed into different barriers. find the
Why is surface wind always directed at some angle across sea-level isobars toward lower pressure? Why is the surface wind directed across the sea-level isobars at a greater angle in Madison than over the middle of Lake Michigan.
Suppose a distant world with surface gravity of 6.64 m/s2 has an atmospheric pressure of 8.52 104 Pa at the surface. What force is exerted by the atmosphere on a disk-shaped region 2.00 m in radius at the surface of a methane ocean
A lens in Lick Observatory's 36-inch refracting telescope has a thickness of 1.96 inches at its center and an index of refraction n=1.52. What is the light speed in the lens
The diodes are oppositely oriented, so that when one diode is forward-biased, the other is back-biased. Which phrase best describes the current in the circuit.
A small mailbag is released from a helicopter that is descending steadily at 2.71 m/s. How far is it below the helicopter
A 2 200-kg pile driver is used to drive a steel I-beam into the ground. calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest
According to legend, to determine whether the king's crown was made of pure gold, Archimedes measured the crown's volume by find out how much water it displaced. The density of gold is 19.3g/cm^3. If the crown's mass was 6.00 * 10^2g, what volume ..
If you were standing on a spinning turntable holding barbells close to your chest, how would your spin be affected? Why?
A frictionless spring of spring constant 500 N/m has one end attached to a verticalwall and the other end to a block of mass 2.0 kg, Find the amplitude and frequency of oscillation
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