Questions from Modern Physics

Q: Table 41.3 shows that for the ground state of the

Table 41.3 shows that for the ground state of the potassium atom, the outermost electron is in a 4s state. What does this tell you about the relative energies of the 3d and 4s levels for this atom? Ex...

Q: Calculate the mass defect, the binding energy (in MeV),

Calculate the mass defect, the binding energy (in MeV), and the binding energy per nucleon of a. the nitrogen nucleus, 7 14

Q: Use Eq. (43.11) to calculate the binding

Use Eq. (43.11) to calculate the binding energy per nucleon for the nuclei 36 86

Q: a. Is the decay n p + β- + ve

a. Is the decay n p + β- + ve energetically possible? If not, explain why not. If so, calculate the total energy released. b. Is the decay p n + β+ + ve energetically possible? If not,...

Q: What nuclide is produced in the following radioactive decays? a

What nuclide is produced in the following radioactive decays? a. α decay of 94 239

Q: 238U decays spontaneously by α emission to 234Th. Calculate a

238U decays spontaneously by α emission to 234Th. Calculate a. the total energy released by this process and b. the recoil velocity of the 234Th nucleus. The atomic masses are 238.050788 u for 238U...

Q: The atomic mass of 14C is 14.003242 u. Show

The atomic mass of 14C is 14.003242 u. Show that the β- decay of 14C is energetically possible, and calculate the energy released in the decay.

Q: What particle (a particle, electron, or positron) is

What particle (a particle, electron, or positron) is emitted in the following radioactive decays? a. 14 27

Q: An electron is moving as a free particle in the –x

An electron is moving as a free particle in the –x-direction with momentum that has magnitude 4.50*10-24 kg.m/s. What is the one­dimensional time­dependent wave function of the electron?

Q: A free particle moving in one dimension has wave function

A free particle moving in one dimension has wave function Ψ(x, t) = A[ei(kx-ωt) – e i(2kx-4ωt) where k and v are positive real constants. a. At t = 0 what are the two smallest positive values of x...