Why does moon have very cold and very hot temperature variations e.g., from `-190^(@)C` to `110^(@)C` even though it is at the same distance from the sun as the earth is?

Why does moon have very cold and very high temperature variations e.g. from -190^(@) to 110^(@)C even though it is at the same distance from the sun as the Earth is?

Why does moon have temperature variations e.g., from -190^(@)C to 110^(@)C even though it is at the same distance from the sun as the earth is?

Suppose a person wants to increase the efficieny of the reversible heat engine that is operating between 100^(@)C and 300^(@)C He had two ways to increase the efficiency . ( a) By decreasing the cold reservoir temperature from 100^(@)C to 50^(@)C and keeping the hot reservoir temperature of the hot reservoir from 300^(@)C to 350^(@)C by keeping the cold reservoir temperature constnat which is the suitable method ?

The sun is less bright at morning and evening as compared to at noon although its distance from the observer is almost the same. Why ?

The sun is less bright at morning and evening as compared to at noon although its distance from the observer is almost the same. Why ?