Exam 9: Resonance and Mechanical Waves

When you blow gently across the top of a particular soda bottle, it emits a tone. The column of air in the bottle is vibrating up and down in its fundamental mode. If you replace the air in the bottle with something heavier than air (like carbon dioxide) and then blow gently across the top of the bottle, it will emit

What is the frequency of a vibration with period 0.02 second?

How are standing waves and traveling waves different?

If you blow across the top of a half full bottle of soda you can produce a clear tone. If you take a drink of soda to reduce the amount of liquid in the bottle and try this again the pitch (frequency) of the sound produced will

How are standing waves and traveling waves similar?

You work in a clock shop and are dealing with an irate customer whose clock you are restoring. They notice that the period of the pendulum in their clock is 2 s and they want to double it. So they insist that you replace the pendulum with one of the same dimensions but just heavier. So you do this. When you get the clock repaired, you and the customer check out the clock's period and find it to be

How does an object bobbing on a water wave move?

Suppose you are doing a popular demonstration where you fill many identical pop bottles up with different water levels and then get the system to make sound by either tapping on the side of the bottle or blowing across the top of it. The results of the demonstration will be that

Suppose you "think outside the box" and design a guitar with strings which all have the same thickness, length and density. Which of the following designing issues must you also consider?

Why does the tide get so high in the Bay of Fundy?

Dispersion is

You are a baseball player and you own a guitar. You're happy with the way you play baseball; it's the pitch of a string on your guitar that you want to change. In fact you want to lower it. Please describe three ways in which you could accomplish your goal.

What two properties of a material affect the speed of sound in the material?

You are the owner of an organ with open - ended pipes. You notice, though, that one note is fairly far off from its target frequency. You take the organ apart, only to find that the one organ pipe making the bad note is closed, not open! Closing the organ pipe made the frequency of the note it produces

Please list three differences between surface water waves and bulk water waves (sound in water).

You are a superb proposal writer and convince NASA to fund your taking a pendulum clock to Mars and studying how it runs. Compared to the time it should keep on Earth, the clock will run

In a cartoon, a bunny is surfing on a 10 foot wave crest that is rapidly approaching the shore. The wave crest travels onto the shore intact, with the bunny still on top of it, and continues to carry him across level land for the next twenty miles. This sort of thing can't happen in real life because

A wave travels across the water on a lake, heading northward. As the result of this wave's passage, water on the surface of the lake

When you get new tires installed on your car the wheels are carefully balanced by placing small weights around the outside of the rim. If one of these weights falls off, your car may vibrate violently when you drive at certain speeds. This vibration occurs for speeds at which

The qualities of a sound tone include pitch, volume and timbre (a piano middle C compared to a tuba middle C). Please list which properties of a sound wave correspond to each of the three sound qualities.