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Author Question: A(n) ______________ is an elementary particle with no charge. a. electron b. neutron c. proton ... (Read 191 times)

beccaep

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on: Jul 28, 2018
A(n) ______________ is an elementary particle with no charge.
 a. electron
  b. neutron
  c. proton
  d. atom

Question 2

A camera has a converging lens with a focal length of 56 mm. If the f-number is 2.8, what is the diameter of the lens (in mm)?
 a. 10
  b. 31
  c. 0.50
  d. 20
  e. 50


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Qarqy

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Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

d


beccaep

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Reply 2 on: Jul 28, 2018
:D TYSM

mjenn52

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Reply 3 on: Yesterday
Wow, this really help

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