How does a particle’s relativistic kinetic energy K compare to its Newtonian kinetic energy when the particle’s speed 
?
A. 
B. 
C.
B.
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The geysers and hot springs of Yellowstone National Park result from
A) thin continental crust separating and creating a rift valley. B) plumes of hot mantle rising in a hot spot within a plate. C) plates that have slipped sideways relative to each other, creating a fault. D) a plate that has run up against an existing continental plate. E) a fault.
What is the uncertainty in determining the momentum of an electron if the speed of the electron is 6000 m/s within an accuracy of 0.004%?
A) 1.09 × 10-31 kg?m/s B) 1.31 × 10-31 kg?m/s C) 2.19 × 10-31 kg?m/s D) 3.21 × 10-31 kg?m/s E) 4.38 × 10-31 kg?m/s
The height of the quasar epoch was
A) less than 1 billion years ago. B) when there was still sufficient mass to fuel the supermassive black holes at their center. C) before the formation of galaxies. D) 5 billion years ago. E) before mass had a chance to accumulate at the nucleus.
When we say that the electromagnetic and weak forces "freeze out" from the electroweak force at 10-10 seconds after the Big Bang, we mean that
A) these forces are important only at temperatures below the freezing point of water—a temperature that the universe reached at an age of about 10-10 second. B) "freezing out" was a term coined by particle physicists who think that the Big Bang theory is really cool. C) prior to this time the electromagnetic and weak forces maintained a single identity, but they possessed separate identities following this time. D) following this time neither the electromagnetic nor the weak force was ever important in the universe again. E) quantum fluctuations by high-speed, relativistic particles in a state of false vacuum cause disturbances in the spacetime continuum, leading to the process described in the question this answer refers to.