In general, as stars go through the last stage of post-main sequence evolution, they will lose mass in the process of settling down into their final state. Explain the mass-loss process and the final state of the star for a low mass star
What will be an ideal response?
For a low mass star, the hydrogen fuel is exhausted, and the star begins to fuse helium. When this happens, the star expands into a red giant. Eventually the helium is exhausted, and the outer layers of the star are ejected as a planetary nebula, leaving a tiny, hot white dwarf behind.
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From Kepler's ________ law, we conclude that the planets do not move with constant speed.
A. First B. Second C. Third D. Fourth
A long straight wire lies on a horizontal table and carries an ever-increasing current northward. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, the induced current circles
A) clockwise in both coils. B) counterclockwise in both coils. C) clockwise in the east coil and counterclockwise in the west coil. D) counterclockwise in the east coil and clockwise in the west coil. E) no emf is induced in either coil.
Light of wavelength 425.0 nm in air falls at normal incidence on an oil film that is 850.0 nm thick. The oil is floating on a water layer 15 cm thick
The refractive index of water is 1.33, and that of the oil is 1.40. You want to add oil so that light reflected off of the top of the oil film will be canceled. What is the minimum distance that you should INCREASE the oil film? A) 121 nm B) 152 nm C) 75.9 nm D) 106 nm E) 60.7 nm
A circular loop (radius = 0.50 m) carries a current of 3.0 A and has unit normal vector of 
/3. What is the x component of the torque on this loop when it is placed in a uniform magnetic field of 
T?
A. 4.7 N ? m B. 3.1 N ? m C. 19 N ? m D. 9.4 N ? m E. 12 N ? m