B - speed and direction are combined in another quantity, called velocity. It can be thought of as its speed in a particular direction. Speed is the corresponding scalar quantity, because it does not have a direction.
Answer:A wave has a wavelength λ, which is the distance between adjacent identical parts of the wave. The wave velocity and the wavelength are related to the wave's frequency and period by vw=λT or vw=fλ.
Explanation:
Answer:
utrasonic
Explanation:
these are sounds beyond our hearing capacity range of 20-20kHz
You could get sick by breathing throw your mouth and you have a less chance of getting sick by breathing throw your nose.
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