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A 0.190kg block of ice is placed against a horizontal, compressed spring mounted on a horizontal tabletop that is 1.10m above the floor. The spring has force constant 2000N/m and is initially compressed 0.045m. The mass of the spring is negligible. The spring is released, and the block slides along the table, goes off the edge, and travels to the floor. If there is negligible friction between the block of ice and the tabletop, what is the speed of the block of ice when it reaches the floor?
A 66kg skier starts from rest at the top of a 1200 m long trail which drops a total of 230m from top to bottom. how much energy was dissipated by friction
Two force vectors point in opposite directions and have the same magnitude. If their magnitudes are 36.5 Newton’s, then what is the magnitude of their sum?
Jack was exposed to fast neutrons; he received a radiation dose of 280rem on part of his hand, affecting 30.0grams of tissue. What was the total energy of the radiation Jack received
If you were to walk briefly in space without a spacesuit while far from the Sun (as an astronaut does in the movie 2001), At what rate would you lose energy
A simple Pendulum is released from the horizontal position. The length of its string is 1.5 m , and the mass is 50 g. find The tangential acceleration of the mass
Three 15.53-g Styrofoam balls of radius 2 cm are coated with carbon black to make them conducting and then are tied to 1.15-m-long threads and suspended freely from a common point
a flat mirror and a wall meet at a 45 degree angle. light strikes the mirror 10 meters from the corner at an angle of incidence of 45 degrees
Long, long ago, on a planet far, far away, a physics experiment was carried out. First, a 0.250- ball with zero net charge was dropped from rest at a height of 1.70. The ball landed 0.400 later. Next, the ball was given a net charge of 7.85 and dropp..
A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 59% What is the warmer temperature
A thin uniform rod (mass = 0.95 kg) swings about an axis that passes through one end of the rod and is perpendicular to the plane of the swing. What is the maximum kinetic energy of the rod as it swings
A tetrahedron contains a point charge Q = 65 nC. Find the electric flux through the surface of the tetrahedrom. Find the flux through each face of the tetrahedron
The time constant of an RC circuit is 4.5 s. How much time t is required for the capacitor (uncharged initially) to gain one-half of its full equilibrium charge?
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