A spacecraft is on a journey to the moon. At what point, as measured from the center of theearth, does the gravitational force exerted on the spacecraft by the earth balance that exertedby the moon? This point lies on a line between the centers of the earth and the moon. Thedistance between the earth and the moon is 3.85 × 108 m, and the mass of the earth is 81.4times as great as that of the moon.moonFearthNumberΟ ΛΕΓΩUnite

Solution:-Step 1: Step 2: Step 3:

Answered: A spacecraft is on a journey to the…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter7: Gravity

Section: Chapter Questions

Problem 38PQ

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The gravitational force exerted on an astronaut on the Earths surface is 650 N directed downward. When she is in the space station in orbit around the Earth, is the gravitational force on her (a) larger, (b) exactly the same, (c) smaller, (d) nearly but not exactly zero, or (e) exactly zero?
Check Your Understanding By what factor must the radius change to reduce the orbital velocity of a satellite by one-half? By what factor would this change the period?
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For many years, astronomer Percival Lowell searched for a Planet X that might explain some of the perturbations observed in the orbit of Uranus. These perturbations were later explained when the masses of the outer planets and planetoids, particularly Neptune, became better measured (Voyager 2). At the time, however, Lowell had proposed the existence of a Planet X that orbited the Sun with a mean distance of 43 AU. With what period would this Planet X orbit the Sun?
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Astrology,that unlikely and vague pseudoscience,makes much of the position of the planets at the moment of birth. The only known force exerts on earth is gravitational. (A) calculate the gravitational force exerted on a 4.00 kg baby by a 110 kg father 0.100 m away at birth (assisting so he is close). (B) calculate the force on the baby due to Jupiter if it's closer to earth , some 6.29x10^11 m away , showing it to be compairible to that of the father. The mass of Jupiter is about 1.90 x10^27 kg . Other objects in the room and the hospital building also exert similar gravitational forces . (Of course there could be an unknown force acting , but scientists first need to be convinced that there is even an effect much less that an unknown force causes it) I used ^ to show its power like exponent

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