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Q. How much acceleration does a 747 jumbo jet of mass 45000 kg experience in takeoff when the thrust for each of four engines is 45000 N?

Q. The moon Europa, of the planet Jupiter, has an orbital period of 3.55 days and an average distance from the center of the planet equal to 671,000km. If the magnitude of the gravitational acceleration at the surface of Jupiter is 2.36 times greater than that on the surface of the Earth, what is the radius of Jupiter? (Hint: begin by the calculating the rotation speed)

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