Questions from Modern Physics

Q: Consider the free-particle wave function of Example 40.1

Consider the free-particle wave function of Example 40.1. Let k2 = 3k1 = 3k. At t = 0 the probability distribution function Ψ (x, t) 2 has a maximum at x = 0. a. What is the smallest positive value...

Q: Do gravitational forces play a significant role in atomic structure? Explain

Do gravitational forces play a significant role in atomic structure? Explain.

Q: A particle is described by a wave function Ψ(x)

A particle is described by a wave function Ψ(x) = Ae-ax2, where A and a are real, positive constants. If the value of a is increased, what effect does this have on a. the particle’s uncertainty in po...

Q: Consider a wave function given by Ψ(x) = A

Consider a wave function given by Ψ(x) = A sin kx, where k = 2π/λ and A is a real constant. a. For what values of x is there the highest probability of finding the particle described by this wave fun...

Q: Compute Ψ 2 for Ψ = Ψ sin ωt, where Ψ

Compute Ψ 2 for Ψ = Ψ sin ωt, where Ψ is time independent and ω is a real constant. Is this a wave function for a stationary state? Why or why not?

Q: Let ψ1 and ψ2 be two solutions of Eq. (40

Let ψ1 and ψ2 be two solutions of Eq. (40.23) with energies E1 and E2, respectively, where E1 ≠ E2 . Is ψ = Aψ1 + Bψ2, where A and B are nonzero constants, a solution to Eq. (40.23)? Explain your answ...

Q: A particle moving in one dimension (the x­axis)

A particle moving in one dimension (the x­axis) is described by the wave function where b = 2.00 m-1, A > 0, and the +x-axis points toward the right. a. Determine A so that the wave f...

Q: If the voltage rather than the current is kept constant, what

If the voltage rather than the current is kept constant, what happens as the temperature increases from 25°C to 150°C? a. At first the current increases, then it decreases. b. The current increases....

Q: If the annihilation photons come from a part of the body that

If the annihilation photons come from a part of the body that is separated from the detector by 20 cm of tissue, what percentage of the photons that originally travelled toward the detector remains af...

Q: What is the energy of each photon produced by positron– electron

What is the energy of each photon produced by positron– electron annihilation? a. 1/2 mev2, where v is the speed of the emitted positron; b. mev2; c. 1/2 mec2; d. mec2.