A student standing on a freely spinnable platform is at rest and holding up a counterclockwise spinning gyroscope as in the picture. If the student suddenly flips the gyroscope upside down, what will happen to them on the platform?

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?

Why are graphs useful when interpreting data

Frank just graduated from eighth grade. assuming exactly four years from now he will graduate from high school how many seconds does he have until his high school graduation