When the outer envelope of a red giant is ejected, the remaining exposed core of a low mass star is called a
A. black hole.
B. white dwarf.
C. neutron star.
D. red super giant.
Answer: B
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A bar magnet is falling toward the center of a loop of wire, with the north pole oriented downward. Viewed from the same side of the loop as the magnet, as the north pole approaches the loop, what is the direction of the induced current?
1.clockwise 2.zero 3.counterclockwise 4.along the length of the magnet
A cube is subjected to a pressure of 10.0 atmospheres. The un-squeezed length of one side of the cube is 1.20 cm. The squeezed length of one side of the cube is 1.18 cm. The bulk strain on the cube is
A. 0.0362. B. 0.0492. C. 0.0534. D. 0.0598. E. 0.0645.
Images that show bands on Uranus can only be obtained using space-based telescopes
Indicate whether the statement is true or false
Boron has primarily two isotopes, one with an atomic mass of 11 amu and another with an atomic mass of 10 amu. If the abundance of the boron atom with a mass
of 11 amu is 18.9 percent and the abundance of the other isotope is 81.1 percent, what would be the average mass of the boron atom? A) 10.19 amu B) 11 amu C) 10 amu D) 10.81 amu E) not enough information given