Physics, 18.09.2019 02:20 lkipjjjjjjjjjj2272

Only one of three balls a, b, and c carries a net charge q. the balls are made from conducting material and are identical. one of the uncharged balls can become charged by touching it to the charged ball and then separating the two. this process of touching one ball to another and then separating the two balls can be repeated over and over again, with the result that the three balls can take on a variety of charges. which one of the following distributions of charges could not possibly be achieved in this fashion, even if the process were repeated a large number of times?
a. qa = 1/3q, qb = 1/3q, qc = 1/3q
b. qa = 1/2q, qb = 1/4q, qc = 1/4q
c. qa = 1/2q, qb = 3/8q, qc = 1/4q
d. qa = 3/8q, qb = 3/8q, qc = 1/4q.

Answers: 1

Show answers

Another question on Physics

Physics, 21.06.2019 23:40

Avalue that describes how heavy an object is and is related to the force of gravity is

Answers: 1

Answer

Physics, 22.06.2019 05:30

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Answers: 3

Answer

Physics, 22.06.2019 07:30

Some material consisting of a collection of microscopic objects is kept at a high temperature. a photon detector capable of detecting photon energies from infrared through ultraviolet observes photons emitted with energies of 0.3 ev, 0.5 ev, 0.8 ev, 2.0ev, 2.5ev, and 2.8ev. these are the only photon energies observed. (a) draw and label a possible energy-level diagram for one of the microscopic objects, which has four bound states. on the diagram, indicate the transitions corresponding to the emitted photons. explain briefly. (b) would a spring–mass model be a good model for these microscopic objects? why or why not? (c) the material is now cooled down to a very low temperature, and the photon detector stops detecting photon emissions. next, a beam of light with a continuous range of energies from infrared through ultraviolet shines on the material, and the photon detector observes the beam of light after it passes through the material. what photon energies in this beam of light are observed to be significantly reduced in intensity (“dark absorption lines”)? explain briefly.

Answers: 3

Answer

Physics, 22.06.2019 10:30

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.

Answers: 2

Answer

You know the right answer?

Only one of three balls a, b, and c carries a net charge q. the balls are made from conducting mater...

Questions