# Physics 2

A F note has a wavelength of 98.8 cm. Calculate its frequency.

If you are standing 100 m away from the starter at a track meet, how long will it take you to hear the sound from the gun after it is shot?

A person is standing on the south side of a canyon and shouts. She hears the echo in 0.44 seconds. Assuming the sound bounced off the other side of the canyon and came back, how wide is the canyon?

What happens to the wavelength and the frequency of a note as you go up one octave?

A concert A has a frequency of 440 hertz. What is its wavelength, and what is the frequency and wavelength of an A one octave higher?

What is the resonant frequency of sound when you blow across an empty soda bottle that is 15 cm tall?

The soda bottle in the above question is 1/3 full. What is the resonant frequency of sound produced when you blow across it?

An organ pipe is 78 cm long. What is the resonance frequency of sound it produced if it is: A. Open? B. Closed?

In the circuit below, the switch sw has been open for a long time. At t = 0, the switch closes. Write, as a function of time for t > 0:

B. the energy in the inductor

An object is placed at a distance of 30 cm from a concave lens of focal length 15 cm, h$_I$ = 2 cm. Determine the position of the image, the linear magnification, and h$_0$.

Given an object height of 3 cm and a convex lens of focal length 10cm. Determine the position and size of the produced image if the object is placed at:

A. 30 cm

B. 5 cm

A light bulb is placed to the left of a convex lens of focal length 20 cm. The image formed is enlarged 5 times and is to the right of the lens. Find the image distance and the object distance.