COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 10, Problem 13QAP
To determine
The impact if the power of the Newton's law of universal gravitation equation is not exactly 2
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Chapter 10 Solutions
COLLEGE PHYSICS
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- in the gravitational PE formula is it negative since the given mass is attracted to gravityarrow_forwardShow that the areal velocity for a circular orbit of radius r about a mass M is At=12GMr . Does your expression give the correct value for Earth’s areal vilocity about the Sun?arrow_forwardCheck Your Understanding Galaxies are not single objects. How does the gravitiational force of one galaxy exerted on the “closer” stars of the other galaxy compare to those farther away? What effect would this have on the shape of the galaxies themselves?arrow_forward
- Find the Hohmann transfer velocities, vEllipseEarth and vEllipseMars ,needed for a trip to Mars. Use Equation 13.7 to find the circular orbital velocities for Earth and Mars. Using Equation 13.4 and the total energy of the ellips (with semi-major asix a), given by E=GmMs2a , find the velocities at Earth (perihelion) and at Mars (aphelion) required to be on the transfer ellipse. The difference, v , at each point is the velocity boost or transfer velocity needed.arrow_forwardCheck Your Understanding Why not use the simpler expression U=mg(y2y1) ? How significant would the error be? (Recall the previous result, in Example 13.4, that the value g at 400 km above the Earth is 8.67m/s2 .)arrow_forwardIn introductory physics laboratories, a typical Cavendish balance for measuring the gravitational constant G uses lead spheres with masses of 1.90 kg and 19.0 g whose centers are separated by about 2.60 cm. Calculate the gravitational force between these spheres, treating each as a particle located at the center of the sphere.arrow_forward
- write the answer for #3 and box •determine its velocity as a function of r • smallest velocity required to escape the earths gravitational field •time required to reach the altitute,arrow_forwardThe radius of Earth is 6370 km, and its orbital speed about the Sun is 30 km/s. Suppose Earth moves past an observer at this speed. To the observer, by how much does Earth’s diameter contract along the direction of motion?arrow_forwardA steel ball weighing 5 kg rolls horizontally at a rate of 10 m/s. If it rolls up an incline, how high up will it be when it comes to rest, assuming standard gravitation?arrow_forward
- a man weighs 600N while on the surface of earth. if he is transported to the planet mythos , which has the same mass as earth but a raduis that is five times larger than earth's, his weight would bearrow_forwardWith the principles of relativity, answer the ff and show the solution:arrow_forwardWhat is the minimum speed (km/s), relative to the Sun, necessary for a spacecraft to escape the solar system if it starts at the Earth's orbit? Voyager 1 achieved a maximum speed of 125,000 km/h on its way to photograph Jupiter. Beyond what distance (m) from the Sun is this speed sufficient to escape the solar system?arrow_forward
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