You find yourself at a lever. a runaway trolley approaches five people who are tied to a set of tracks. pulling the lever will divert the trolley to a different set of tracks, where only one person is tied down do you pull the lever?

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?

You can decrease the resistance of a length of wire by

If the area of a square has increased by a factor of 16, by how much has each side increased?