What do you call sound with frequency above 20,000 Hz? | Card: 5 / 44 |
What does SONAR stand for? | Card: 17 / 44 |
Vibrations with constant amplitude in absence of external force are called _____ vibrations. | Card: 21 / 44 |
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Amplitude decreases continuously due to resistive forces from the surrounding medium. | Card: 24 / 44 |
A tuning fork vibrating in air produces which type of vibrations? | Card: 25 / 44 |
True or False: In resonance, the vibrating body oscillates with decreased amplitude. | Card: 29 / 44 |
To prevent resonance that could cause dangerous vibrations in the bridge structure. | Card: 32 / 44 |
What is 1 decibel defined as? | Card: 37 / 44 |
What distinguishes sounds of same loudness and pitch from different instruments? | Card: 43 / 44 |






