A proton and an electron arc each held in place on the x-axis. The proton is at

Question

A proton and an electron arc each held in place on the x-axis. The proton is at x = -d and the electron is at x = +d. They are released simultaneously, and the only force that affects their motions is the electrostatic force of attraction that each applies to the other. Which particle reaches the origin first? Explain the reason for your answer. 11. A common demonstration is to toss some small fragments of paper onto a highly charged conducting sphere. The paper initially sticks to the sphere and after a little while pops off as if shot into the air. In 1676, Newton sent a note to the Royal Society scribing a similar experiment where he charged a glass disk and held it horizontally above some little fragments of paper.: These he observed ''sometimes leaping up to the glass. and resting there a while; then leaping down and again resting.'' Explain what was happening. 12. Static electric buildup can be troublesome as, for example, in a photographic processing lab, where film easily becomes charged (usually positively) attracting dust. and even causing sparks. To control the effect, there are static eliminators, one variety of which uses radioactive polonium 210. This material pours out a constant stream of positively charged alpha particles. Hoy would this help?

Explanation / Answer

10. Force on each particle is same. But the accelaration is different ,beacause of its mass difference.

From Newtons second law a = F/m

Proton is 1800 time massive than electron. Hence the accelaration due to the same force in electron is greater than proton. Hence electron reaches the origin first.

11. When the neutral paper attached with a charged body,initially it will be at rest, later the same charge on the sphere will be induced on the paper. Because of like charges, it will be repelled away

12.  Alpha particles emitted by polonium, ionize air molecules that neutralize charges on the nearby surfaces.

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