The distance light travels in one year is called a light year. It is about 5.88 trillion miles and is used to measure stellar di
1 answer:
Answer:
14 billion years
Explanation:
The distance of the edge of the universe = 14 billion light years
Light year is used to measure the distance which is equal to the distance traveled by the light at the speed of approx in one year.
It means that to reach the edge of the universe which is 14 billion light years apart , if one is travelling at the speed of light which is , it will take 14 billion years to reach there.
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Answer:
The doppler effect equation is:
In the equation we have frequencies, but then we have the wavelengths of the lights, remember the relation:
v = f*λ
then:
f = v/λ
and v is the speed of light, then:
f = c/λ
where:
f' is the observed frequency, in this case, is equal to f = (3*10^17nm/s)/550 nm
f is the real frequency, in this case, is (3*10^17nm/s)/650 nm
vs is the speed of the source, in this case, the source is not moving, then vs = 0 m/s.
v is the speed of the wave, in this case, is equal to the speed of light, v = 3*10^8 m/s
v0 is your speed, this is what we want to find.
Replacing those quantities in the equation, we get:
(3*10^17nm/s)/550 = (3*10^8 m/s + v0)/(3*10^8 m/s)*(3*10^17nm/s)/650 nm
(650nm)/(550nm) = (3*10^8 m/s + v0)/(3*10^8 m/s)
1.182*(3*10^8 m/s) = (3*10^8 m/s + v0)
1.182*(3*10^8 m/s) - (3*10^8 m/s) = v0 = 54,600,000 m/s
So your speed was 54,600,000 m/s, which is a lot.
Answer:
θ = 36°
Explanation:
given,
F₁ = 22.8 N
F₂ = 16.6 N
magnitude of force = ?
direction of force = ?
F = 28.20 N
direction
θ = 36°