Questions from College Physics

Q: A soap bubble (n = 1.33) having a

A soap bubble (n = 1.33) having a wall thickness of 120 nm is floating in air. (a) What is the wavelength of the visible light that is most strongly reflected? (b) Explain how a bubble of different th...

Q: What is the energy of a photon that, when absorbed by

What is the energy of a photon that, when absorbed by a hydrogen atom, could cause an electronic transition from (a) The n = 2 state to the n = 5 state and (b) The n = 4 state to the n = 6 state?

Q: A hydrogen atom initially in its ground state (n = 1

A hydrogen atom initially in its ground state (n = 1) absorbs a photon and ends up in the state for which n = 3. (a) What is the energy of the absorbed photon? (b) If the atom eventually returns to th...

Q: The Balmer series for the hydrogen atom corresponds to electronic transitions that

The Balmer series for the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number n = 2 as shown in Figure P28.19. Consider the photon of longest wavelength...

Q: A particle of charge q and mass m, moving with a

A particle of charge q and mass m, moving with a constant speed v, perpendicular to a constant magnetic field B, follows a circular path. If in this case the angular momentum about the center of this...

Q: (a) If an electron makes a transition from the n

(a) If an electron makes a transition from the n = 4 Bohr orbit to the n = 2 orbit, determine the wavelength of the photon created in the process. (b) Assuming that the atom was initially at rest, det...

Q: Consider a large number of hydrogen atoms, with electrons all initially

Consider a large number of hydrogen atoms, with electrons all initially in the n = 4 state. (a) How many different wavelengths would be observed in the emission spectrum of these atoms? (b) What is th...

Q: A photon with energy 2.28 eV is absorbed by a

A photon with energy 2.28 eV is absorbed by a hydrogen atom. Find (a) The minimum n for a hydrogen atom that can be ionized by such a photon and (b) The speed of the electron released from the state i...

Q: (a) Calculate the angular momentum of the Moon due to

(a) Calculate the angular momentum of the Moon due to its orbital motion about Earth. In your calculation use 3.84 x 108 m as the average Earth–Moon distance and 2.36 x 106 s as the period of the Moon...

Q: An electron is in the second excited orbit of hydrogen, corresponding

An electron is in the second excited orbit of hydrogen, corresponding to n = 3. Find (a) The radius of the orbit and (b) The wavelength of the electron in this orbit.