Answer:
36 m/s
Explanation:
The speed of wave is a product of wavelength and frequency, expressed as s=fw where f is frequency in Hz and w is wavelength. Wavelength is the distance between successive crests while frequency is also the reciprocal of time. Amplitude has no effect on the velocity of waves. Substituting frequency with 12 Hz and wavelength with 3 m then the speed will be
S=3*12=36 m/s
Therefore, the speed is 36 m/s
If coal was our Primary source it would help the world but population would be higher and it can damage animals,people will be able to drive calm without problems ithe world
The direction of the motion is constantly changing during
motion over any closed path, not only circular.
Answer:
first 2 yes 3rd one no 4th one yes last one no
Explanation:
For 2, i think that the reason the ultrasound can make an image is by using the waves that it can use to pick up (???)
idk, that's what i think anyway, i hope i helped ^^
