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A 67.0 kg diver is 2.30 m above the water, falling at speed of 6.70 m/s. Calculate her kinetic energy as she hits the water. (Neglect air friction)
A disk of inertia .10 kgxm2 is rotating with an angular speed of 1.0 rad/s. A non-roatating ring of mass .5 kg, What is the new angular speed of this combination
A 110 g copper calorimeter cup contains 190 cm3 of water and 45 g of ice, all in thermal equilibrium. find the mass of water before the hot iron is put into the cup
A woman throws a ball at a vertical wall d = 3.0 m away. The ball is h = 1.5 m above ground when it leaves the woman's hand with an initial velocity of 12 m/s at 45°. How long was the ball in the air after it left the wall
A rotating cylinder about 16 {rm km} long and 6.8 km in diameter is designed to be used as a space colony. With what angular speed should it rotate so that the residents on it will experience the same acceleration due to gravity as on Earth.
A novice skier, starting from rest, slides down a frictionless 28.00 incline whose vertical height is 170. How fast is she going while she reaches the bottom?
A compressed-air cylinder stands 96.0 cm tall and has internal diameter 21.0cm cm . At room temperature, its pressure is 161 atm. How many moles of air are in the cylinder
Determine the position of the GPS satellite relative to and from the center of the earth and ratio of clock rates on a GPS clock in orbit and one on the surface of the earth.
A motorcyclist is able to ride on the vertical wall of a bowl- shaped track . his weight is counteracted by the friction of the wall on the tires. what force increase or decrease if he rides faster.
The front 1.20 m of a 1600 kg car is designed as a "crumple zone " that collapses to absorb the shock of a collision. what is the magnitude of the average force on the car
A Physics instructor, dissatisfied with his salary and looking for a thrill, performs motorcycle stunts in his spare time. where does the rider strike the other side of the cliff
A second baseman tosses the ball to the first baseman, who catches it at the same level from which it was thrown, What is the horizontal component of the ball's velocity just before it is caught
A molecule of DNA (deoxyribonucleic acid) is 2.07 µm long. The ends of the molecule become singly ionized: negative on one end, Determine the effective spring constant of the molecule
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