Suppose that a particle is trapped in a box. How does the spacing in energy between adjacent energy levels change as the quantum number identifying a level increases?
A) The spacing decreases.
B) The spacing alternately increases and decreases, depending on whether the wave function is a sine or a cosine function.
C) The spacing remains constant.
D) The spacing increases.
D
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Based on its surface features, the most important event on Venus in the past billion years or so was ________
A) the onset of mantle convection, which caused Venus's lithosphere to split into plates like those on Earth B) a global "repaving" that erased essentially all the surface features that had existed earlier C) the impact of an unusually large asteroid that left a deep scar on one side of the planet D) the eruption of a giant volcano that formed one of Venus's "continents"
What is "uncertain" in the Heisenberg Uncertainty principle?
A. The energy of the particle when it has wave properties B. The exact number of protons in the nucleus C. The value of the particle's position when the particle's momentum is known precisely D. The value of the Planck's constant E. The time period of the wave describing the particle
A student is sitting on the right side of a school bus when it makes a right turn. We know that the force of gravity acts downwards and a normal force from the seat acts upwards. If the student stays in place when the bus turns, we also know that there must be
a. no other force on the student. b. a force parallel to the seat directed forward on the student. c. a force parallel to the seat directed to the left on the student. d. a force parallel to the seat directed to the right on the student. e. a force parallel to the seat in a direction between forward and left on the student.
A neutral atom has an electron configuration of 1s22s22p6. If a neutral atom holds one additional electron, what is the ground state configuration?
A) 1s22s22p63s1 B) 1s22s22p7 C) 1s22s32p6 D) 1s32s32p6 E) none of the given answers