The combination of all forces that act on an object are (2 points)
select one:
oa. net force
ob. newton's second law
oc. pressure
d. terminal velocity

In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm. what is the electron's orbital frequency? what is the effective current of the electron?

Which of the following best describes the circuit shown below?

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?