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Author Question: The electric field at point P due to a point charge Q a distance R away from P has magnitude E. In ... (Read 393 times)

jCorn1234

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on: Jul 29, 2018
The electric field at point P due to a point charge Q a distance R away from P has magnitude E. In order to double the magnitude of the field at P, you could
 
  A) double the distance to 2R.
  B) double the charge to 2Q.
  C) reduce the distance to R/2.
  D) reduce the distance to R/4.
  E) double the charge to 2Q and at the same time reduce the distance to R/2.

Question 2

A beam of light falling on a metal surface is causing electrons to be ejected from the surface. If we now double the frequency of the light, which of the following statements are correct? (There could be more than one correct choice.)
 
  A) The kinetic energy of the ejected electrons doubles.
  B) The speed of the ejected electrons doubles.
  C) The number of electrons ejected per second doubles.
  D) Twice as many photons hit the metal surface as before.
  E) None of the above things occur.
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shaikhs

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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jCorn1234

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Reply 2 on: Jul 29, 2018
:D TYSM

xiaomengxian

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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