Questions from College Physics

Q: Horizontally polarized light with intensity I0 passes through two ideal polarizers,

Horizontally polarized light with intensity I0 passes through two ideal polarizers, one after the other. The transmission axes of the first and second polarizers are at angles θ1 and θ2, respectively,...

Q: In a photoelectric experiment using sodium, when incident light of wavelength

In a photoelectric experiment using sodium, when incident light of wavelength 570 nm and intensity 1.0 W/m2 is used, the measured stopping potential is 0.28 V. (a) What would the stopping potential b...

Q: A singly charged ion of unknown mass moves in a circle of

A singly charged ion of unknown mass moves in a circle of radius 12.5 cm in a magnetic field of 1.2 T. The ion was accelerated through a potential difference of 7.0 kV before it entered the magnetic f...

Q: Sketch some magnetic field lines for two identical bar magnets in the

Sketch some magnetic field lines for two identical bar magnets in the given configuration. Be sure to show field lines inside the magnets as well as outside.

Q: Pascal’s principle: proof by contradiction. Points A and B are

Pascal’s principle: proof by contradiction. Points A and B are near each other at the same height in a fluid. Suppose PA > PB. (a) Can both vA and vB be zero? Explain. (b) Point C is just above poin...

Q: (a) Use Gauss’s law to prove that the electric field

(a) Use Gauss’s law to prove that the electric field outside any spherically symmetrical charge distribution is the same as if all of the charge were concentrated into a point charge. (b) Now use Gau...

Q: Calculate the mass density of nuclear matter.

Calculate the mass density of nuclear matter.

Q: Which of these unidentified nuclides are isotopes of each other?

Which of these unidentified nuclides are isotopes of each other?

Q: In one type of mass spectrometer, ions having the same velocity

In one type of mass spectrometer, ions having the same velocity move through a uniform magnetic field. The spectrometer is being used to distinguish 12C+ and 14C+ ions. The 12C+ ions move in a circle...

Q: An alpha particle with a kinetic energy of 1.0 MeV

An alpha particle with a kinetic energy of 1.0 MeV is headed straight toward a gold nucleus. (a) Find the distance of closest approach between the centers of the alpha particle and gold nucleus. (Ass...