The force of attraction between two oppositely charged pith balls is 5.3 x 10 newtons. if the charge on the two objects is 6.7 x 109 coulombs,
what is the distance between the two charges? (k = 9.0 x 10 newtonmeter2/coulombs? )
a. 2.76 x 10 meters
b. 7.0*10*1 meters
c. 6.7* 10 meters
d. 8.2 x 10 meters
e 9.6 x 10 meters

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

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?

What are similarities and differences between refraction, reflection, diffraction and absorption?