Question

There is a circular spinner (divided into four equal parts) labelled 1,2,3 and ? in each section. If the expected value of points in any given sector is 4, how many points are in the missing sector of the spinner? Show your work.

Answer 1

During the sunrise the sun is set close to the Earth's horizon, and therefore light travels a longer distance through the atmosphere of the Earth.

During the sunrise the sun is set close to the Earth's horizon, and therefore light travels a longer distance through the atmosphere of the Earth. This is the reason sun appear reddish early in the morning. The astronaut will not observe this phenomenon on the moon's surface, because the moon has no atmosphere.