Plz 15 points: a black hole is

an object so diffuse that light leaving it is bent totally back to center of the universe.
an object so diffuse that light approaching it is blocked from view.

an object so dense that light leaving it is bent totally back to the nearest star.
an object so dense that light leaving it is bent totally into itself

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 passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

When an object is heated it contracts. a. true b. false