Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 10, Problem 24P
(a)
To determine
The rotation rate of the Sun if it were to collapse into a neutron star of radius 10 km.
(b)
To determine
(i) The rotational kinetic energy of our Sun greater or smaller after the collapse
(ii) By what factor kinetic energy change, and where does the energy go to or come from?
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Question 3
a. In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting in circular path
very close to the star HD 179949. The orbit was 6.4×10° km, and it takes the planet only 3.09 days
to make one orbit. (a) What is the mass of star? (b) How fast is this planet moving? Explain your
calculations.
Can you please help w/ the question in the pic?
This is the data I have so far:
1. Determine the mass M of the massive object at the center of the Milky Way galaxy. Take the distance of one light year to be 9.461x10^15: answer= 4.26*10^37
2.Express your answer in solar masses instead of kilograms, where one solar mass is equal to the mass of the sun, which is 1.99*10^30: answer=2.14*10^7
TIA
Plaskett's binary system consists of two stars that revolve In a circular orbit about a center of mass midway between them. This statement implies that the masses of the two stars are equal (see figure below). Assume the orbital speed of each star is |v | = 240 km/s and the orbital period of each is 12.5 days. Find the mass M of each star. (For comparison, the mass of our Sun is 1.99 times 1030 kg Your answer cannot be understood or graded. More Information solar masses
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Physics for Scientists and Engineers
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