Sandy rubs a rubber rod with a piece of animal fur. The total charge of the system before rubbing is zero and it is electrically neutral. The same is true for the fur. When Sand rubs the rubber rod with the fur, the rubber rod acquires negative (-) charges. How does the system of change overall, based on the law of conservation of charge?

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

when it gains or loses electrons

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                                         : )

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