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What force is necessary to lift athin wire ring 2.5 cm in diameter from water surface at 20 degree celicious ? surface tension at 20 degree celicious is 0.0718 N/m. neglect the weight of ring
A 13 g projectile traveling 161 m/spenetrates into a 0.25-kg wad of putty and emerges cleanly at37 m/s. how fast does it move after the projectile emerges
Pat (mass 53 kg) and Chris (mass 72 kg) sit in a 26-kg kayak at rest on frictionless water. What's the kayak's speed after Chris catches the pack
A satellite orbits the earth at a distance of 10,000 miles from the earth's center. At this distance the force of gravity on the satellite is 90 lbs. What would the force (in lbs) on the satellite be if the distance were 5,000 miles instead
The middle C string on a piano is under a tension of 992 N. The period and wavelength of a wave on this string are 3.82 ms and 1.39 m
the drawing shows a square each side of which has a length of l 0.25 m. two different positive charges q1 and q2 are
A 1.5 kg kitten jumps down from a 2.0 meter high fence. What will be the kitten's speed when it reaches the ground
a stone thrown horizontally from a height of 5.92 m hits the ground at a distance of 13.50 m. calculate the speed of
a 2kg block of wood slides on the surface shown. all surfaces are frictionless, except the trough which is rough; the coefficient of kinetic friction there is 0.2 and the trough is 15m long. where will the block come to rest
Air streams horizontally past a small airplane's wings such that the speed is 63.0m/s over the top surface and 53.0m/s past the bottom surface. What is the direction of the net vertical force (including the effects of gravity) on the airplane
Water is pumped from the Colorado River to supply Grand Canyon Village, located on the rim of the canyon. What is the minimum pressure at which the water must be pumped if it is to arrive at the village
A solid cylinder of radius 'a' and mass M rolls without slipping down an inclined plane of angle α. Show that the acceleration is constant and equal to a = 2/3 g sin α.
A pigeon flying horizontally at a speed of 16.0m/s drops a stolen Rolex watch. The timepiece falls to the ground in 2.90s. (a) what was the watch's altitude when it was dropped? (b) how far horizontally did it travel before it smashed into the deck?
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