What is the energy difference between the second excited state and first excited state of an electron in the "box" of size l=1nm? a) 1.9 ev b) 1.1 ev c) 0.6 ev d) 0.3 ev e) 0.2 ev

The midpoints? a, b, and c are marked on the histogram. match them to the indicated scores. which? scores, if? any, would be considered? unusual?

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball

Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.