The further away s galaxy, the faster it is moving away from us true or false

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge