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(a) in 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift?
(b) in 1960, mrs maxwell rogers of tampa florida, reportedly raised one end of a car that had fallen onto her son when a jack failed. If her panic lift effectively raised 4000 N (about a quarter of the car's weight) by 5 cm, how much work did her force do on the car?
A baseball player hits a triple and ends up on third base. A baseball "diamond" is a square, What is the magnitude of his displacement
A satellite has a mass of 5939 kg and is in a circular orbit 4.94 × 105 m above the surface of a planet. The period of the orbit is 2.3 hours. What would be the true weight of the satellite
A Chinook wind blowing at 800mb has a temperature of 100F and a mixing ratio of 4 g/kg. Is this the same as the air at 1000mb on the windward side of the mountains having a temperature of 294.5K and a mixing ratio of 10 g/kg or is it the same as t..
A 455pF capacitor is charged to 155V and then quickly connected to a 255mH inductor. Determine the peak value of the current
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
a sphere is constructed of two concentric pieces. The inner part is a solid sphere of radiu 10.0 cm made of a material with density 4000 kd/m^3. What is the average density of this sphere
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. what is the magnitude of the average current in this region
A child throws a stone from the top of a 15 m cliff with a speed of 20 m/s. If the stone weights 2 N, find its kinetic energy and speed when it lands on the ground
A bicycle with wheels 48 cm in radius travels down the street with an initial speed of 7.00 m/s. What is the initial angular velocity of the wheels
n = 3.10 mol of Hydrogen gas is initially at T = 388 K temperature and pi = 1.76×105 Pa pressure. The gas is then reversibly and isothermally compressed until its pressure reaches pf = 7.75×105 Pa. How much heat did the gas emit
An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. How far (in km) must he now travel to reach base camp
Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tightly wound with a single layer of 1.70-mm-diameter superconducting wire.
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