Answer : Show New questions in PhysicsWhy wasn't gravitational contraction the answer to where the sun gets its energy from? Two children fight over a toy. One pulls with a force of 8 N to the right. The other pulls with a force of 6 N to the left. What is the strength and d ... An airplane started flight from rest to reach 100m/s after 20s if the airplane has a mass of 25000kg the required force to move it is ___ A.150 B.2500 ... Why does earth have a marine oceanic ecosystem and viable atmosphere where as Venus is lacking both? Why does earth have a marine oceanic ecosystem and viable atmosphere where as Venus is lacking both? An object is tossed up. What is the acceleration as it goes up? Earth rotates on its axis about once every year. true false question. true /false An empty storage tank has a volume of 3,250 ft. What is the buoyant force exerted on it by the air? (Assume the air is at 0°C and 1 atm.) A diver springs upward from a board that is 3.20 meters above the water. At the instant she contacts the water her speed is 8.58 m/s and her body make ... A body moving in the positive x direction passes the origin at time t = 0. Between t=0 and t=1 second, the body has a constant speed of 24 meters per ...
Previous Next Problem 4.32Part AIf Earth were twice as far from the Sun, the force of gravity attracting Earth to theSun would be CorrectProblem 4.33Part AAccording to the law of universal gravitation, what would happen to Earth if theSun were somehow replaced by a black hole of the same mass?Earth would be quickly sucked into the black hole.Earth's orbit would not change.Earth would slowly into the black hole.CorrectProblem 4.34Earth would slowly spiral into the black hole.Earth would be quickly sucked into the black hole.Earth's orbit would not change.Earth would slowly into the black hole.
If the Moon were closer to Earth, high tides wouldANSWER:CorrectProblem 4.45Understanding Newton's Version of Kepler's Third Law.Find the orbital period for theplanet in each case. (Hint:The calculations for this problem are so simple that you willnot need a calculator.)Part AA planet with twice Earth's mass orbiting at a distance of 1from a star withthe same mass as the Sun.ANSWER:CorrectPart Bstay the same.occur three or more times a day rather than twice a day.be higher than they are now.be lower than they are now.AU1 year6 months3 months2 yearsAU A planet with the same mass as Earth orbiting at a distance of 1from a starwith four times the Sun's mass.ANSWER:CorrectProblem 4.46Using Newton's Version of Kepler's Third Law.Part AFind Earth's approximate mass from the fact that the Moon orbits Earth in anaverage time of 27.3 days at an average distance of 384,000 kilometers. (Hint:The Moon's mass is only aboutof Earth's.)Express your answer to two significant figures and include the appropriateunits.ANSWER:CorrectPart BFind Jupiter's mass from the fact that its moon Io orbits every 42.5 hours at anAU6 months2 years3 months1 year180=5.94×1024MEarthkg average distance of 422,000 kilometers.Express your answer to two significant figures and include the appropriateunits.ANSWER:CorrectPart CYou discover a planet orbiting a distant star that has about the same mass as theSun, with an orbital period of 87. What is the planet's orbital distance?Express your answer using two significant figures.ANSWER:CorrectPart DPluto's moon Charon orbits Pluto every 6.4 days with a semimajor axis of 19,700kilometers. Calculate thecombinedmass of Pluto and Charon.Express your answer to two significant figures and include the appropriateunits.ANSWER:=1.90×1027MJupiterkgdays=5.8×1010rplanetm=1.48×1022+MPlutoMCharonkg CorrectPart ECalculate the orbital period of a spacecraft in an orbit 300 kilometers aboveEarth's surface.Express your answer using one significant figure.ANSWER:CorrectPart FEstimate the mass of the Milky Way Galaxy from the fact that the Sun orbits thegalactic center every 230 million years at a distance of 27,000 light-years. (Aswe'll discuss in Chapter 15, this calculation actually tell us only the mass of thegalaxywithinthe Sun's orbit.)Express your answer to two significant figures and include the appropriateunits. Upload your study docs or become a Course Hero member to access this document Upload your study docs or become a Course Hero member to access this document End of preview. Want to read all 82 pages? Upload your study docs or become a Course Hero member to access this document What would happen if Earth was twice as far from the Sun?If we increase the distance between the sun and the earth, the force of gravity becomes weaker. Due to the force of gravity, planets, satellites, moons move around a large massive body.
What would the Sun's force be on the Earth if our planet were twice as far from the Sun as it is?In other words, if a planet were twice as far from the Sun, the force would be (1/2)2, or 1/4 as large. Put the planet three times farther away, and the force is (1/3)2, or 1/9 as large.
What if Earth had twice as much gravity?If gravity were twice as strong , bodies possessing the same construction and mass as our flora and fauna would weigh twice as much and would collapse.
What would happen if the gravity between Earth and the Sun were to somehow stop?Gravity is the force that pulls Earth and stops it from going off in some other direction.” Without the sun's gravitational pull, Earth would move in a straight line away from the sun.
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If earth were twice as far from the sun, the force of gravity attracting earth to the sun would be
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