Clouds inhibit the outflow of terrestrial radiation. this acts to

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

If the new moon happens on january 15th, what shape will it be on february 6th?

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point