In the ground state of hydrogen, the uncertainty in the position of the electron is roughly 0.10 nm. If the speed of the electron is approximately the same as the uncertainty in its speed, about how fast is it moving

Explanation:

given

uncertainly in the position of the electron  = 0.10 n m  (

using uncertainly principle

after solving these equation we get

after solving we get

the answer is b, have negligible mass

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.