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When viewed by an observer on the Earth, light from a distantgalaxy is Doppler shifted to the red such that the ratio of the unshifted frequency to the observed frequency is 2.9. What is the galaxy's speed relative to the Earth?
A weather vane initially at rest has a moment of inertia of 0.103 kg · m2 about its axis of rotation, Find the angular velocity of the weather vane just after it is struck
Prepare a multiple-step income statement for the year ended December 31, 2012, concluding with earnings per share.
at the science olympiad competition a group of middle school students uses a trebuchet that launches a tennis ball from
A 10-kg box is at rest at the end of an unstretched springwith constant k=4000 N/m. What is the amplitude of the resulting oscillation of this system
If it takes 3 golf balls to equal the mass of one tennis ball, what weight of tennis balls do you require equalling the number of golf balls in one kilogram of golf balls.
A solenoid 88.0 cm long has a radius of 2.60 cm and a winding of 2000 turns; it carries a current of 3.60 A. Calculate the magnetic field outside the solenoid
A car traveling east and a minivan traveling south collide in a completely inelastic collision at a perpendicular intersection. what is the speed of the vehicles immediately after collision
Two satellites are in circular orbits around a planet that has radius 9.00×10^6m. What is the orbital speed of the second satellite
A 73.0-μF capacitor is connected to a generator operating at alow frequency. The rms voltage of the generator is 3.00 V and isconstant. A fuse in series with the capacitor has negligibleresistance and will burn out when the rms current reaches 17...
A photon of wavelength 4.28 x 10^-2 nm strikes a free electron and is scattered at an angle of 32.0 degrees from its original direction. find the energy gained by the electron
A model rocket fired vertically from the ground ascends with avertical acceleration of 3.6m/s2 for 5.0 s. Its fuel isthen exhausted, so it continues upward as a free-fall particle and then falls back down.
A cart with a mass 340g moving on frictionless linear airtrack at an intial speed od 102m/s undergoes an elasticcollisionwith an initially stationary cart of unknown mass. what is the speed of the two-cart center of mass
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