For a particle in a 1-dimensional box, what happens to the zero-point energy if the width of the box is halved?

A. nothing, it remains at zero
B. it doubles
C. it halves
D. it quadruples
E. it quarters


D. it quadruples

Physics & Space Science

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Which of the following is an important difference between the infinite square-well potential and the finite square-well potential?

a. Particles can exist in classically forbidden regions outside the finite square-well potential. b.The number of energy levels is limited in the infinite square-well potential but not limited in the finite square-well potential. c. The infinite square-well potential utilizes Schrödinger's equation to describe particle motion while the finite square-well potential does not. d. The energy levels are quantized only in the finite square-well potential. e. Only the energy levels in the finite square-well potential depend on Planck's constant.

Physics & Space Science

A scuba diver has his lungs filled to half capacity (3 liters) when 10 m below the surface. If the diver holds his breath while quietly rising to the surface, what will the volume of the lungs be (in liters) at the surface? Assume the temperature is the same at all depths. (The density of water is 1.0 × 10^3 kg/m3.)

a. 5.9 b. 4.5 c. 6.4 d. 3.9 e. 3.1

Physics & Space Science

If the mixing of 10 atomic %copper into a silver crystal occurs at T=1000 K (727°C), determine the change in the Gibbs free energy on a per-mole basis if the enthalpy of solution for copper into silver is 0.25 eV/atom. (b) Based upon your result, should it be possible to mix 10 atomic %copper into silver? Explain your answer, and discuss this result in comparison to Example Problem 4.8.

What will be an ideal response?

Physics & Space Science

Of the wavelengths emitted from a hydrogen gas discharge tube, those that are associated with transitions from higher levels down to the n = 1 level produce which of the following?

a. infrared c. ultraviolet b. visible d. mixture of infrared and visible

Physics & Space Science