An atom’s mass number equals the number of
a.
protons plus the number of electrons.
c.
protons.
b.
protons plus the number of neutrons.
d.
neutrons.

select the best answer from the choices provided

a
b
c
d

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes