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Author Question: A double-convex thin lens is made of glass with an index of refraction of 1.52. The radii of ... (Read 131 times)

segrsyd

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on: Jul 29, 2018
A double-convex thin lens is made of glass with an index of refraction of 1.52. The radii of curvature of the faces of the lens are 60 cm and 72 cm. What is the focal length of the lens?
 
  A) 70 cm
  B) 63 cm
  C) 75 cm
  D) 66 cm
  E) 58 cm

Question 2

A player hits a ball with a bat. If one part of the interaction is the bat against the ball, the other part is the
 
  A) air resistance on the ball.
  B) weight of the ball.
  C) ball against the bat.
  D) grip of the player's hand against the ball.
  E) none of the above


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bdobbins

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

B

Answer to Question 2

Answer: C


segrsyd

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

cici

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Reply 3 on: Yesterday
Wow, this really help

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