An electron of mass 9.11 × 10^–31 kg has a momentum of 2.06 × 10^–22 kg•m/s. What is its speed?
a. 0.800c
b. 0.467c
c. 0.602c
d. It cannot have this momentum since it would require a speed greater than c.
C
You might also like to view...
A beam of polarized light of intensity I0 passes through a sheet of ideal polarizing material. The polarization axis of the beam and the transmission axis of the sheet differ by 38°. What is the intensity of the emerging light?
a. 0.79I0 b. 0.62I0 c. 0.91I0 d. 0.90I0 e. 0.96I0
Numerous meteorites found on Earth originated from which planet?
a. Mercury b. Venus c. Mars d. Jupiter e. Saturn
You want to determine whether a mystery object is a neutron star or a white dwarf. Which of the following properties would demonstrate that it is definitely a neutron star?
A) It emits most strongly in visible and ultraviolet light. B) It is surrounded by a planetary nebula. C) Every decade or so, it erupts in a nova explosion. D) It dims and brightens more than twice per second.
According to the hypothesis of de Broglie, any moving particle has
a. energy. b. a magnetic force field. c. an electric force field. d. a wavelength.