Considering only the role of dark matter and keeping all other factors the same, which hypothetical universe is oldest?
A) the one with more dark matter
B) the one with less dark matter
C) Dark matter doesn't affect the inferred age of the universe.
B
You might also like to view...
What is the ultimate fate of an isolated pulsar?
A) It will spin ever faster, becoming a millisecond pulsar. B) As gravity overwhelms the neutron degeneracy pressure, it will explode as a supernova. C) As gravity overwhelms the neutron degeneracy pressure, it will become a white dwarf. D) It will slow down, the magnetic field will weaken, and it will become invisible. E) The neutron degeneracy pressure will eventually overwhelm gravity and the pulsar will slowly evaporate.
An FM radio station broadcasts at 98.6 MHz. What is the wavelength of the radiowaves?
a. 60.8 m b. 6.08 m c. 3.04 m d. 0.314 m e. 0.33 cm
What is the speed of the wave described by y(x,t) = A cos(x2 + 2Bxt +B2t2 )
A) B/2 B) B C) 2Bx D) B2 E) The function given is not a solution to the wave equation.
Coulomb's Law: Two point charges, Q1 and Q2, are separated by a distance R. If the magnitudes of both charges are doubled and their separation is also doubled, what happens to the electrical force that each charge exerts on the other one?
A. It increases by a factor of 2.
B. It increases by a factor of 
.
C. It is reduced by a factor of 
.
D. It increases by a factor of 4.
E. It remains the same.