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Author Question: An ideal spring with a spring constant (force constant) of is stretched from equilibrium to 2.9 m. ... (Read 211 times)

sarasara

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on: Jul 29, 2018
An ideal spring with a spring constant (force constant) of is stretched from equilibrium to 2.9 m. How much work is done in the process?
 
  A) 93 J
  B) 186 J
  C) 47 J
  D) 121 J

Question 2

An object that is 4.0 cm tall is placed 15 cm in front of a concave mirror of focal length 20 cm.
 
  (a) Where is the image formed and how far is it from the mirror?
  (b) How tall is the image?


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macmac

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

A

Answer to Question 2

(a) 60 cm behind the mirror (b) 16 cm


sarasara

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Reply 2 on: Jul 29, 2018
Gracias!

Mochi

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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