waves and sound10 cards

Tagged as: nursing, physics, travel, astronomy

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1

What is a harmonic series?

all possible wavelengths that can be made form a standing wave.

2

what s the 1st harmonic? how does it compare to the length of the string?

it is the same as the fundamental frequency. Having a standing wave with the least amount of nodes possible. Two... - 1st harmonic- L= 1/2 wavelength

3

what is the second harmonic?

occurs when wavelength= Length



6

Whats is beat frequency?

measures how off two sounds are in pitch. The difference in frequency = the pitch you will hear

7

How does intensity of sound change with frequency and amplitude?

intensity increases with the square of the frequency and the square of the amplitude.


9

What property affects the velocity of sound in a gas? why?

temperature. - Velocity is determined by medium and molecules move faster in a hot gas than in a cold gas.

10

What are the 3 types of waves? explain each

1. Mechanical - must have a medium to travel and an initial energy input. ex: sound and ocean waves 2. electromagnetic- its the wave created and absorbed by charged particles (ex photons) and has a magnetic and electric components. ex: radio and x-rays. 3. Matter waves-... may not need to know.