The collective name for neutrons and protons is ______________
Fill in the blank(s) with correct word
nucleons
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A(n) ____________________ periodically emits large amounts of X-ray radiation as material accretes around a neutron star or black hole
Fill in the blank(s) with correct word
When the potential energy of a satellite decreases
A) kinetic energy also decreases. B) its kinetic energy correspondingly increases. C) its distance from the orbiting body increases. D) none of the above
How are the event horizon and Schwarzschild radius related?
A) The Schwarzschild radius is smaller than the distance from the singularity of a black hole to the event horizon. B) The Schwarzschild radius is equal to the distance from the singularity of a black hole to the event horizon. C) The Schwarzschild radius is greater than the distance from the singularity of a black hole to the event horizon. D) The size of the Schwarzschild radius is unrelated to the distance from the singularity of a black hole to the event horizon. E) The size of the Schwarzschild radius is proportional to the distance from the singularity of a black hole to the event horizon.
Which of the following is classified as "ionizing radiation"?
A) gamma rays B) alpha and beta radiation C) Both of the above. D) X-rays E) All of the above.