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Question: A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, 13 years have elapsed on earth, and 8.9 years have elapsed on board the ship.
Part A: How far away is the planet, according to observers on earth?
I need tutor help to solve the above question and thanks in advance.
An archer pulls her bowstring back 0.432 m by exerting a force that increases uniformly from zero to 227 N. What is the equivalent spring constant of the bow
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How much work done against force of gravity
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Mary (mass = 33 kg) likes to slide too. On a nearby playground there is a straight metal slide with a vertical drop of 2.0 m and a length (measured along the slide) of 3.3 m, What was the net change in potential energy when she went from the top of..
A 120-V motor has mechanical power output of 2.70 hp. It is 94.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the current in the motor
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