Answer: passes through Earth's shadow.
Explanation:
During a total lunar eclipse, the Earth lies between the Sun and the moon. All three are aligned in one straight line.
The moon does not have its own light. It reflects the sunlight. During total lunar eclipse, the earth comes between the sun and the moon and blocks the sunlight. Thus, the moon passes through the Earth's shadow and appears dark.
The Planck–Einstein relation relates the energy of a photon to its wavelength:
E = h*ν = h*c/λ
where ν is the frequency of the photon,
λ is its wavelength,
c is the speed of light in a vacuum, and h is Planck's constant = 6.626*10^(-34) J*s
In this case, the energy of a photon with a wavelength of 6200nm is equal to:
E = .(6.626*10^(-34) J*s)*(2.998*10^8 m/s)/(6200*10^-9 m)
E = 3.20*10^(-20) J
Answer:
m = 0.0125 kg
Explanation:
Let us apply the formula for the speed of a wave on a string that is under tension:
where F = tension force
μ = mass per unit length
Mass per unit length is given as:
μ = m / l
where m = mass of the string
l = length of the string
This implies that:
Let us make mass, m, the subject of the formula:
From the question:
F = 20 N
l = 4.50 m
v = 85 m/s
Therefore:
Hey
<span>
the double of the mass and distance cancels each other out
</span>
Hoped I Helped
