Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

26.6, 7, 8 Concept Q


Why do different objects make different sounds when dropped on the floor? Because it depends on the elasticity and shape of the object.
What are 2 factors that can affect the 'natural' frequency of an object? Elasticity & shape
Give 2 examples of forced vibrations. tuning fork on a table a music box on a ledge
When does resonance occur? When the frequency of the forced vibration of an object matches the object's natural frequency.
What effect does resonance have on the amplitude of waves? Resonance increases the amplitude.
How did resonance affect the Tacoma Narrows Bridge? When the natural frequency of the marching soldiers matched the rhythm of the bridge, the bridge collapsed. Wind caused the increasing amplitude to eventually caused the bridge to collapse.
Why is it dangerous for people in the balcony to stamp their feet in a steady rhythm? Because the natural frequency will match with their stomping and cause the balcony to collapse.
Created by: cdeutsch