What is the wave velocity if the wave length is 200 cm and the frequency is 4 Hz?

λ-wavelength=200cm=2m

f-frequency=4Hz

v-velocity=?

λ=v/f=>v=λ*f=2m*4Hz=8m/s

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !