Suppose that a white dwarf is gaining mass through accretion in a binary system. What happens if the mass someday reaches the 1.4 solar mass limit?
A) The white dwarf will collapse in size, becoming a neutron star.
B) The white dwarf will undergo a nova explosion.
C) The white dwarf will explode completely as a white dwarf supernova.
D) The white dwarf will collapse to become a black hole.
C
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The lattice parameter of CsCl is 0.4123 nm. Calculate the density of CsCl.
What will be an ideal response?
A rod system with a uniform linear density of l = 4.40 kg/m has the shape shown in the figure, with rod 1 the vertical rod and rod 2 the horizontal rod. Rod 1 has length L1 = 8.00 m, and rod 2 has length L2 = 7.50 m. Neglect the diameter of the rods
?
What is the mass of each rod?
a.
rod 1: 12.4 kg, rod 2: 11.9 kg
b.
rod 1: 4.69 kg, rod 2: 4.13 kg
c.
rod 1: 0.550 kg, rod 2: 0.587 kg
d.
rod 1: 35.2 kg, rod 2: 33.0 kg
Electrical resistivity and electrical _________are both material properties independent of the specimen geometry, and they are inversely related to each other.
Fill in the blank(s) with the appropriate word(s).
A charged particle (mass = M, charge = Q > 0) moves in a region of space where the magnetic field has a constant magnitude of B and a downward direction. What is the magnetic force on the particle at an instant when it is moving horizontally toward the north with a speed V?
a. QVB toward the east b. Zero c. QVB toward the west d. QVB upward e. QVB toward the south