In electricity, what quantity is analogous to the "acceleration of gravity" g (which is a force per unit mass)?
A) electric force
B) electric field
C) electric potential
D) electric charge
E) an electric dipole
B
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In quantum tunneling, electrons and other quantum particles can tunnel through a region of space that would be forbidden to them if they were classical particles
Indicate whether the statement is true or false
Each dot on this graph represents an individual Cepheid variable star. Which of the following is true for a Cepheid that is 10,000 times as luminous as the Sun?
A) It varies gradually in brightness, with a peak in brightness about every 30 days. B) It orbits the center of the galaxy about every 30 days. C) It orbits its binary companion about every 30 days. D) It undergoes a massive flare about every 30 days.
We cannot predict the precise decay time of a particular radioactive 14C nucleus because
A) the calculation is too difficult for today's computers. B) a single nucleus is too small to be seen or directly detected. C) of the difficulty of determining the precise initial states of all its protons and neutron. D) of the quantum entanglement of its protons and neutrons. E) of quantum uncertainties.
Exhibit 17-3Four wave functions are given below. I.y(x, t) = 5sin(4x- 20t + 4) II.y(x, t) = 5sin(3x- 12t + 5) III.y(x, t) = 5cos(4x + 24t + 6) IV.y(x, t) = 14cos(2x- 8t + 3)Use this exhibit to answer the following question(s). Refer to Exhibit 17-3. Rank the wave functions in order of the magnitude of the wavelengths, from least to greatest.
A. IV, II, I, III B. IV, I, II, III C. I, II, III, IV D. IV, II, III = I E. I = III, II, IV