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Author Question: The focal length of a magnifying glass is 15 cm. If the near point of a person is 25 cm, what is the ... (Read 59 times)

natalie2426

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on: Jul 29, 2018
The focal length of a magnifying glass is 15 cm. If the near point of a person is 25 cm, what is the magnification of this glass for this person when his eyes are focused at infinity?
 
  A)
 
  1.7
  B)
 
  2.7
  C)
 
  3.7
  D)
 
  4.7
  E)
 
  5.7

Question 2

A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta decay. How much energy (in MeV) is released if carbon-14 has a mass of 14.003242 u and nitrogen-14 has a mass of 14.003074 u?
 
  A)
 
  0.00157 MeV
  B)
 
  0.0157 MeV
  C)
 
  0.157 MeV
  D)
 
  1.57 MeV
  E)
 
  15.7 MeV
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debra928

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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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natalie2426

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Reply 2 on: Jul 29, 2018
Wow, this really help

parshano

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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