Questions from College Physics

Q: Yolanda, whose mass is 64.2 kg, is riding

Yolanda, whose mass is 64.2 kg, is riding in an elevator that has an upward acceleration of 2.13 m/s2. What force does she exert on the floor of the elevator?

Q: A photon passes near a nucleus and creates an electron and a

A photon passes near a nucleus and creates an electron and a positron, each with a total energy of 8.0 MeV. What was the wavelength of the photon?

Q: Polarized light of intensity I0 is incident on a pair of ideal

Polarized light of intensity I0 is incident on a pair of ideal polarizing sheets. Let θ1 and θ2 be the angles between the direction of polarization of the incident light and the transmission axes of t...

Q: A muon and an antimuon, each with a mass that is

A muon and an antimuon, each with a mass that is 207 times greater than an electron, were at rest when they annihilated and produced two photons of equal energy. What is the wavelength of each of the...

Q: An unpolarized beam of light (intensity I0) is moving in

An unpolarized beam of light (intensity I0) is moving in the x- direction. The light passes through three ideal polarizers whose transmission axes are (in order) at angles 0.0°, 45.0°, and 30.0° count...

Q: What is the electronic configuration of the ground state of the carbon

What is the electronic configuration of the ground state of the carbon atom? Write it in the following ways: (a) using spectroscopic notation (1s2 …); (b) listing the four quantum numbers for each o...

Q: A sinusoidal EM wave has an electric field amplitude Em = 32

A sinusoidal EM wave has an electric field amplitude Em = 32.0 mV/m. What are the intensity and average energy density? [Hint: Recall the relationship between amplitude and rms value for a quantity th...

Q: An electron in a hydrogen atom has quantum numbers: n =

An electron in a hydrogen atom has quantum numbers: n = 8; mℓ = 4. What are the possible values for the orbital angular momentum quantum number ℓ of the electron?

Q: Energy carried by an EM wave coming through the air can be

Energy carried by an EM wave coming through the air can be used to light a bulb that is not connected to a battery or plugged into an electric outlet. Suppose a receiving antenna is attached to a bulb...

Q: (a) Find the magnitude of the orbital angular momentum L

(a) Find the magnitude of the orbital angular momentum L for an electron with n = 2 and I = 1 in terms of ħ. (b) What are the allowed values for Lz? (c) What are the angles between the positive z-ax...