If two protons are heading toward one another at 0.800 c in the laboratory frame, what is the kinetic energy of one proton in the frame of reference of the other proton?
A. 3.13 GeV
B. 5.56 GeV
C. 1.56 GeV
D. 2.50 GeV
E. 3.34 GeV
E. 3.34 GeV
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Which of the following statements about black holes is not true?
A) If we watch a clock fall toward a black hole, we will see it tick slower and slower as it falls towards the black hole. B) The event horizon of a black hole represents a boundary from which nothing can escape. C) If you watch someone else fall into a black hole, you will never see him or her cross the event horizon. However, he or she will fade from view as the light he or she emits becomes more and more redshifted. D) If you fell into a supermassive black hole (so that you could survive the tidal forces), you would experience time to be running normally as you plunged across the event horizon. E) If the Sun magically disappeared and was replaced by a black hole of the same mass, the Earth would soon be sucked into the black hole.
A car with a radio antenna 1.0 m long travels at 80 km/h in a locality where the Earth's magnetic field is 5.0 × 10^?5 T. What is the maximum possible emf induced in the antenna as a result of moving through the Earth's magnetic field?
Spacetime is curved by
A) mass. B) the force of gravity. C) quantum fluctuations. D) the vacuum force.
What is the ionization energy of the hydrogen atom in the n = 2 state?
A. 13.6 eV B. -13.6 eV C. 3.40 eV D. -3.40 eV E. -1.51 eV