As an electron in a hydrogen atom moves from the second principal energy level to the first principal energy level, the energy of the atom.

It's 90 °f in the shop with high humidity. what pressure will be shown on the high-side pressure gauge (ac system on)?             a.  10 to 50 psi    b.  40 to 140 psi  c.  210 to 290 psi  d.  at least 350 psi

Technological solutions have good bad effects. what is one bad effect of spraying a chemical pesticide on crops

How many soccer players are there that are only getting paid as a career? ? plz give correct info