Answer:
42 Hz
Explanation:
Given,
Speed ( v ) = 210 m/s
Wavelength ( λ ) = 5 m
To find : Frequency ( f ) = ?
Formula : -
v = f λ
f = v / λ
= 210 / 5
f = 42 Hz
Answer: An AU equals the distance between Earth and the Sun; a parsec
equals the angle between an object's apparent positions when viewed
from two different locations.
Explanation:
Light year is the distance light travels in one Earth year. 1 light year is equal to
.
An astronomical unit (AU) is the average distance between the earth and the sun. An AU is approximately 150 million km.
A parsec is the distance at which one astronomical unit subtends an angle of one second of arc. 1 parsec is equal to 20600 AU.