Nt: what is the unit of measurement for work?) A body builder lifts a 200kg barbell up 2m into the air. How
much work does the bodybuilder do?

Iwill give brainliest if you answer right : )

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?

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?