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Physics homework help

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physics

2 question  need help urgent  only answer  not method  

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PHY - One trajectory that can be used to send spacecraft from Earth to Mars

One trajectory that can be used to send spacecraft from Earth to Mars is an elliptical orbit that has Sun at one focus, its perihelion at Earth, and its aphelion at Mars.

PHY - Suppose you have just discovered a new X-­‐ray binary

Suppose you have just discovered a new X-­‐ray binary, which contains a B2 main sequence star orbiting an unseen companion.

PHY - Observations of a certain galaxy show that stars at a distance of 16 pc

Observations of a certain galaxy show that stars at a distance of 16 pc from the center of the galaxy orbit a central supermassive black hole at a speed of 200 km/s. Use Newton’s form of Kepler’s third law to determine the mass of the central black hole. 

PHYSICS SIMPLE RADIATION QUESTIONS

CAN ANY OF YOU DO THESE QUESTIONS WITHIN 7 HRS ?

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Vibrations, Waves, and Sound

Please solve the following problems. You must show all work.

 

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