Questions from College Physics

Q: An x-ray diffraction experiment using 16 keV x-rays

An x-ray diffraction experiment using 16 keV x-rays is repeated using electrons instead of x-rays. What should the kinetic energy of the electrons be in order to produce a diffraction pattern with max...

Q: A magnetic dipole antenna has its axis aligned with the vertical.

A magnetic dipole antenna has its axis aligned with the vertical. The antenna sends out radio waves. If you are due south of the antenna, what is the polarization state of the radio waves that reach y...

Q: Can a heat engine be made to operate without creating any “

Can a heat engine be made to operate without creating any “thermal pollution,” that is, without making its cold reservoir get warmer in the long run? The net work output must be greater than zero.

Q: A warm pitcher of lemonade is put into an ice chest.

A warm pitcher of lemonade is put into an ice chest. Describe what happens to the entropies of lemonade and ice as heat flows from the lemonade to the ice within the chest.

Q: An external magnetic field is parallel to the central axis of a

An external magnetic field is parallel to the central axis of a 50 turn coil of radius 5.0 cm. During an interval of 160 ms, the field changes from 0.20 T in one direction to 0.30 T in the opposite di...

Q: A particle traveling at a speed of 6.50 × 106

A particle traveling at a speed of 6.50 × 106 m/s has the uncertainty in its position given by its de Broglie wavelength. What is the minimum uncertainty in the speed of the particle?

Q: To understand Rayleigh's criterion as applied to the pupil of the eye

To understand Rayleigh's criterion as applied to the pupil of the eye, notice that rays do not pass straight through the center of the lens system (cornea + lens) of the eye except at normal incidence...

Q: Three point charges are located at the corners of a right triangle

Three point charges are located at the corners of a right triangle as shown in the figure. How much work does it take for an external force to move the charges apart until they are very far away from...

Q: Chronic exposure to loud noises can be damaging to one's hearing.

Chronic exposure to loud noises can be damaging to one's hearing. This can be a problem in occupations in which heavy machinery is used. If a machine produces sound with an intensity level of 100.0 dB...

Q: A starship takes 3.0 days to travel between two distant

A starship takes 3.0 days to travel between two distant space stations according to its own clocks. Instruments on one of the space stations indicate that the trip took 4.0 days. How fast did the star...