How long did the bid bang occur

Consider two planets, a and b, orbiting a distant star. planet b orbits twice as far from the star as planet a does. how does planet b's orbital period compare to planet a's?

Karin was exposed to extremely cold temperatures and was diagnosed with a homeostatic disorder. What symptoms does she most likely have

How are galaxies organized and distributed within the universe

The transfer of energy between two objects that are physically touching is called

The energy necessary to enable a reaction to occur is called the activation energy.

What is the mass in kg of a leopard in a tree if the tree branch is 36 m up and the leopard's gravitational potential energy is 29988 J?

Venus's average distance from the sun is 0.72 AU and Saturn's is 9.54 AU. Calculate the orbital velocity of Venus and Saturn around the sun. (The mass of the sun is 1.99 X 10^30 KG. an AU is 1.50 X 10^11 M.

Caleb's parent drove him to a swim meet 208 km away. It took them 2 hours, which included a 15-minute break to refuel. What was their average driving speed?

Why is thermal energy from the Sun transferred to Earth through electromagnetic waves instead of any other type of thermal energy transfer? Electromagnetic waves can carry energy through matter. Electromagnetic waves can travel through empty space.

Why do different elements emit different colors of light