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The frequency of light reaching Earth from a particular galaxy is 16% lower than the frequency the light had when it was emitted.
(a) What is the speed of this galaxy relative to the Earth? Give your answer as a fraction of the speed of light.
c
what is the value of the R that gives zero pressure? write down it in terms of h, W and fundamental constants.
One ball is perfectly inelastic and stays on the wall after collision andsecond ball is elastic and bounces of the wall. Elucidate the momentum change
A uniform door weighs 46-N and is 0.9 m wide and 2.5 m high. What is the magnitude of the torque because of the door's own weight about a horizontal axis perpendicular to the door and passing through a corner.
A 56.0 kg ice skater spins about a vertical axis by her body with her arms horizontally outstretched, making 1.50 turns each second. The distance from one hand to the other is 1.5 m . Biometric measurements indicate that each hand typically makes ..
The mass of a robot is 5220 kg. This robot weighs 2650 N more on planet A than it does on planet B. Both planets have the same radius of 2.26 × 107 m
The difference in electric potential between a thunder cloud and the ground is 1.58 108 V, Determine the change in electric potential energy of one of the electrons that move to the cloud
What is the resultant velocity of the motor boat. What distance downstream does the boat reach opposite shore.
A speeding motorist traveling 100km/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 12km/h/s (note the mixed units).
Without slowing down, she skis off the cliff and lands downhill at a point whose vertical distance is 3.50 m below the edge. Explain how fast is she going just before she lands?
An 800 g ball moves in a vertical circle on a 1.07-m-long string. If the speed at the top is 5-m/s, after that the speed at the bottom would be 8.18 m/s.
A uniform electric field exists in the region between two oppositely charged parallel plates 1.67cm apart. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the conflicting plate in a time int..
Then find the force between them as a function of distance h. describe why the sign of the force does (or does not) make sense to you.
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