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☆☆☆☆☆Cards in this guide (8)
As you sit on a dock you notice a wave crest pass You count another four wave crests in the next 12 seconds What is the frequency of these waves
0.33 Hz
What is the scale used to define sound intensities
Decibel scale.
The scale used to define sound intensities is called the decibel scale system. The units used to measure the intensity of sound are referred to as decibels.
Do virtual images exist where no light rays can be found
Yes, virtual images exist where no light rays can be found.
The angle of refraction is measured between the refracted ray and what other line
The normal
What is a wave called in which the medium vibrates perpendicular to the motion of the wave
Transverse wave.
If you look up close at an ant using a convex lens what do you see
The same ant, enlarged by the light bending effects of the lens.
What correctly defines the speed of a wave
v=fλ
Are virtual images always erect and real images always inverted
yes is 100% true
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