The energy of a photon is given by:
where h is the Planck constant and f is the photon frequency.
We know the energy of the photon,
, so we can rearrange the equation to calculate the frequency of the photon:
And now we can use the following relationship between frequency f, wavelength
and speed of light c to find the wavelength of the photon:
Answer:
"its varying position means that the Sun lights up different regions, creating the illusion that the Moon is changing shape over time. The best way of getting to understand the lunar phases is to regularly go out on a clear night when the Moon is in the sky and observe it."
Answer:
Orbital motion
1.is a gravitational motion.
2.they move in the same direction.
3.move are the same time.
Axial motion
1.is a rotary motion
2.move around it own axis
3. revolution takes one year
Answer : The rocks and debris would never accrete into a planet.
Explanation : Gravity is an attraction force and dependents on the mass of the objects but in the absence of the force the rocks and debris would not come together to form a clump.
So, we can say that in the absence of gravity, the rock and debris would never accrete into a planet.
S = d/t
s = 1396/4 = 349m/s