A primary difference between momentum and kinetic energy is
A) momenta can cancel; kinetic energy cannot.
B) kinetic energy can cancel; momenta cannot.
C) either of the above depending on circumstances
D) none of the above
Answer: A
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A throbbing pulse of electromagnetic radiation is called a
A) proton. B) photon. C) phototron. D) newtron. E) nooytron.
A system of 11 protons and 15 neutrons has a net charge of
a. 17.6 × 10^-19 C. b. –17.6 × 10^-19 C. c. 41.6 × 10^-19 C. d. 11.0 × 10^-19 C. e. –41.6 × 10^-19 C.
What is the nuclear radius of 90Sr?
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Which of the following statements is true of the chromosphere?
A) It lies below the photosphere. B) It has a depth greater than Earth's diameter. C) It consists of nonionized atoms. D) It can be seen during a total solar eclipse.