a + 90 - i + 90 - i = 180 a = 2i. The fraction of light that made out of the lake is a over the total circle, that is, 360°. So: f = 2i/360 = i/180 i = arc sin (1/n) f = (arc sin (1/n))/180. However, the answer I have for this exercise (and it does seem to be right, because it is from a University*) is f = 1 2 − 1 2 n n 2 − 1.
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It is the length of the semimajor axis of Earth’s orbit. It is used to describe the distances within solar system. LY (light-year) is the distance that light can travel in 1 year, which is about 10 trillion kilometers. It is used to describe the distances of stars and galaxies. Light travels at the speed of light, which is 300,000 kilometers ...
It is due to the combined effect of the Earth's rotation and convection currents in the molten core. The interaction of the magnetic field's charged particles from the Sun creates the aurora.
Mars completes one orbit around the Sun in approximately two Earth years. Mars orbits at an average distance to the Sun of about 1.5 AU, and Mars' mass is about 1/10 of the Earth's mass. Therefore, Mars' orbital speed is ___ the orbital speed of the Earth. lower than.