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An Astronomer is in a spaceship that is orbiting around a planet with a period of 34 hours. The spaceship is a distance of 3 x 107 m away from the planet's center. What is the mass of the planet? How far from the planet would a moon have to orbit to have the same period (28 days) as our moon?
what is the momentum of a 1800-kg car traveling with a speed of 27m.s (60mph)
After staying on Penitgy for a few days, the landing craft returns to its mothership. What height does the landing craft attain during this time period
A certain kind of glass has an index of refraction of 1.648 for blue light of wavelength 439 nm and an index of refraction of 1.619 for red light of wavelength 677 nm
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 charge of +q is located at the origin, while an identical charge is located on the x axis at x = 0.51 m. Where should the third charge be located
Consider a pump that is required to compress air in a factory. The cylinder in the pump has an inner diameter of 2.00 cm and length 60.0 cm. What is the increase in internal energy of the gas
A stone is dropped from the top of a cliff at t=0. The splash it makes when striking the water below is heard 6 seconds after it is dropped (i.e. at t=6 sec). How high is the cliff? (i.e. find 'h') suppose that the speed of sound in air is 340m/s ..
A ball is thrown horizontally off the top of a building with a height of h=22.5m. What is the horizontal distance the ball travels before it hits the ground
A person undergoing radiation treatment for a cancerous growth receives an absorbed dose of 1.8 Gy. All the radiation is absorbed by the gowth. Determine the rise in temperature
What was the bullet's flight time. A marble is thrown horizontally with a speed of 11 m/s from the top of a building. When it strikes the ground, the marble has a speed that makes an angle 38° with the horizontal. From what height above the ground..
A horizontal magnetic field of 1.0 x 10^-4 T is at an angle of 30 degrees to the direction of the current in a straight wire 75 cm long. what is the magnitude of the force on the wire
A 66-N %u22C5 m torque acts on a wheel with a moment of inertia 175 kg %u22C5 m2. how long will it take the wheel to make one revolution?
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