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A cannon at the top of a 119 m high clifffires at a pirate ship. The cannonball has an initial velocity of180 m/s at 58° above horizontal. Ignore air resistance.
a)How long does it take for the cannonball to land in the water nearthe pirate ship?sb) How far out from the cannon does the cannonball land?mc) At what angle (below horizontal) it the cannonball travelingwhen it hits the water?
The speed of light in a certain medium is 2.2E10^8 m/s. What is the index of refraction of this medium
Two crates, of mass 75.0 kg and 109 kg, are in contact and at rest on a horizontal surface. A 732 N force is exerted on the 75.0 kg crate. What is the force the each crate exerts on the other.
The drawing shows a circus clown who weighs 725 N. The coefficient of static friction between the clown's feet and the ground is 0.51. He pulls vertically downward on a rope that passes around three pulleys and is tied around his feet. What is the mi..
A steam locomotive uses the back-and-forth motion of a drive rod to turn its 1.55 m diameter wheel. Each compete oscillation of the rod corresponds to one wheel revolution.What's the rod's oscillation frequency when the train is moving at 30 m/s ?
Reluctant diver Dave is hanging by his fingertips at the high-dive board, a distance of 8m from the water. His friend pries his fingers from the board, How long does it take Dave to reach the water
The work function of a particular substance is 4.15 × 10-19 J. What is the photoelectric cutoff wavelength for this material
It takes a student t = 7.6 s to push a block m = 11 kg at a constant velocity over a distance of d = 8.2 m. Write an expression for the energy required to move the block along this path in terms of the variables provided
what is the acceleration of the wallet. If the contact between ball and ground lasted 1.6ms, what average force was exerted on ball.
It is said that Galileo discovered a basic principle of the pendulum - that period is independent of the amplitude - by using his pulse to time the period of swinging lamps in the cathedral as they swayed in the breeze. assume that one oscillation..
A 0.290-kg block along a horizontal track has a speed of 1.60 m/s, What is the spring's maximum compression if the track is frictionless
Coherent light with wavelength 590 mm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 m from the slits.
A 30-caliber rifle with a mass of 2.84 kg fires a 9.73- g bullet with a speed of 556 m/s with respect to the ground. What kinetic energy is released by the explosion of the gunpowder
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