If a particle has a total energy that is 5.00 times its rest energy, the speed of the particle is closest to which one of the following values?
A) 0.998c B) 0.980c C) 0.950c D) 0.985c E) 0.990c
B
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What is meant by a sorbent?
What will be an ideal response?
Energy Levels: The shortest wavelength of a photon that can be emitted by a hydrogen atom, for which the initial state is n = 12, is closest to which one of the following values? (c = 3.0 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A. 92 nm B. 82 nm C. 72 nm D. 62 nm E. 52 nm
What event marks the birth of a new star?
What will be an ideal response?
A neutron star is
A) the remains of a star that died by expelling its outer layers in a planetary nebula. B) a star made mostly of elements with high atomic mass numbers, so that they have lots of neutrons. C) the remains of a star that died in a massive star supernova (if no black hole was created). D) an object that will ultimately become a black hole.