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Author Question: What is the percent uncertainty in the measurement 2.58 0.15 cm? A) 2.9 B) 5.8 ... (Read 30 times)

Bob-Dole

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on: Jul 29, 2018
What is the percent uncertainty in the measurement 2.58  0.15 cm?
 
  A)
 
  2.9
 
  B)
 
  5.8
 
  C)
 
  8.7
 
  D)
 
  12
 
  E)
 
  15

Question 2

A beam of light with a frequency range of 3.01  1014 Hz - 6.10  1014 Hz is incident on a metal surface. If the work function of the metal surface is 2.20 eV, what is the maximum kinetic energy of photoelectrons ejected from this surface?
 
  A)
 
  0.32 eV
  B)
 
  0.21 eV
  C)
 
  0.42 eV
  D)
 
  0.16 eV
  E)
 
  0.48 eV


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xMRAZ

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

B

Answer to Question 2

A


Bob-Dole

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Reply 2 on: Jul 29, 2018
:D TYSM

mohan

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Reply 3 on: Yesterday
Excellent

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