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Author Question: A seed is 15 mm in front of a convex lens, and the image of the seed is 4.0 mm behind the lens. What ... (Read 128 times)

crobinson2013

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on: Jul 29, 2018
A seed is 15 mm in front of a convex lens, and the image of the seed is 4.0 mm behind the lens. What is the focal length of the lens?
 
  A) 11 mm
  B) 5.5 mm
  C) 3.8 mm
  D) 3.2 mm

Question 2

A sample of ideal monatomic gas is cooled by 50.0C at constant volume by removing 831 J of energy from it. How many moles of gas are in the sample? (R = 8.31 J/mol  K)
 
  A) 2.50 mol
  B) 1.50 mol
  C) 1.33 mol
  D) 1.00 mol


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Chocorrol77

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

B

Answer to Question 2

C


crobinson2013

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Reply #2 on: Jul 29, 2018
Thank you!


Chocorrol77

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Reply #3 on: Jul 29, 2018
Always glad to help...


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