what were the initial and final energy levels of the original excited electron? (h = 6.63  10 Js; c = 3.00  10 m/s; 1 eV = 1.60  10 J)

Why do electron microscopes have higher resolving power than light microscopes?

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below. your friend goes first, and you follow after he has dropped a distance of 2.0m. when your friend hits the water, is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm