(2 points) a pair of students measure the intensity of light from a desklamp in sec. 4.5 of the experiment. when the detector is 25 cm from the lamp, the signal measured by the detector is 0.74 v. how large a signal (in v) do the students expect when the detector is 45 cm away?

Intensity at 45 cm will be 0.2283 volt

Explanation:

We have given that intensity of signal measured by the detector is 0.74 volt at a distance of 25 cm

We know that intensity of signal is given by , here s is strength of light and r is distance

So

In second case

Intensity is given by

So

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!