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Author Question: A machinist with normal vision has a near point at 25 cm. The machinist wears eyeglasses in order to ... (Read 122 times)

jessicacav

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on: Jul 29, 2018
A machinist with normal vision has a near point at 25 cm. The machinist wears eyeglasses in order to do close work. The power of the lenses is +1.75 diopters. With these eyeglasses, what is the near point of the machinist?
 
  A) 24 cm B) 14 cm C) 21 cm D) 17 cm E) 10 cm

Question 2

What is the net power radiated by a little animal with a surface area of 0.075 m2 if his emissivity is 0.75, his skin temperature is 315 K, and he is in a room with a temperature of 290 K? ( = 5.67  10-8 W/m2  K4 )
 
  A) 8.8 W
  B) 6.0 W
  C) 8.0 W
  D) 15 W
  E) 18 W


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katieost

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

D

Answer to Question 2

A


jessicacav

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Reply #2 on: Jul 29, 2018
TY


katieost

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Reply #3 on: Jul 29, 2018
You're welcome


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