Luis is installing some 12-gage wire. how much resistance will there be throughout a distance of 400 feet?

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?

What property of an object determines its inertia?

Why is the use of carbon-14 limited