Questions from College Physics

Q: The formula for the speed of transverse waves on a spring is

The formula for the speed of transverse waves on a spring is the same as for a string. (a) A spring is stretched to a length much greater than its relaxed length. Explain why the tension in the sprin...

Q: See Problem 21. This time the glass plates are immersed in

See Problem 21. This time the glass plates are immersed in clear oil with an index of refraction of 1.50. (a) What is the minimum distance between the two glass plates for one of the dark regions? (...

Q: A circular loop of wire moves in one of three directions near

A circular loop of wire moves in one of three directions near a long, straight current-carrying wire. For each case, find the direction of the current in the loop, the direction of the magnetic force...

Q: Two equal charges (Q = +1.00 nC)

Two equal charges (Q = +1.00 nC) are situated at the diagonal corners A and B of a square of side 1.0 m. What is the magnitude of the electric field at point D?

Q: A guitar string has a fundamental frequency f. The player presses

A guitar string has a fundamental frequency f. The player presses on a fret, reducing the vibrating part of the string to 5/6 of its original length. Ignoring the very small change in tension, by what...

Q: A typical sneeze expels material at a maximum speed of 44 m

A typical sneeze expels material at a maximum speed of 44 m/s. Suppose the material begins inside the nose at rest, 2.0 cm from the nostrils. It has a constant acceleration for the first 0.25 cm and t...

Q: Two optically flat plates of glass are separated at one end by

Two optically flat plates of glass are separated at one end by a wire of diameter 0.200 mm; at the other end they touch. Thus, the air gap between the plates has a thickness ranging from 0 to 0.200 mm...

Q: Dynamite is being used to blast through rock to build a road

Dynamite is being used to blast through rock to build a road. After one explosion, the masses and kinetic energies of several fragments of rock thrown up into the air are: (a) 8 kg, 400 J (b) 2 kg, 16...

Q: What are the four lowest standing wave frequencies for an organ pipe

What are the four lowest standing wave frequencies for an organ pipe that is 4.80 m long and closed at one end?

Q: In a certain region of space, there is a uniform electric

In a certain region of space, there is a uniform electric field / V/m to the east and a uniform magnetic field / to the west. (a) What is the electromagnetic force on an electron moving north at...