Calculate the weight of a 4.3 kg bunny WITH PROOF/WORK

Identify the type of synthetic material used in each object

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?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity