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Author Question: If a surface has a work function of 1.5 eV and photons of energy 2.7 eV are shone on the surface, ... (Read 26 times)

imowrer

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on: Jul 29, 2018
If a surface has a work function of 1.5 eV and photons of energy 2.7 eV are shone on the surface, what is a possible kinetic energy of the electrons emitted from the surface?
 
  A)
 
  3.0 eV
  B)
 
  2.0 eV
  C)
 
  4.0 eV
  D)
 
  1.0 eV
  E)
 
  No electrons are emitted.

Question 2

An element has an atomic mass number of 14 and atomic number 6. (a) How many protons does it have? (b) How many neutrons does it have?
 
  What will be an ideal response?


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sabina576

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Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

(a) 6
(b) 8


imowrer

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Reply 2 on: Jul 29, 2018
Gracias!

daiying98

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Reply 3 on: Yesterday
:D TYSM

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