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Author Question: How many joules of energy are required to accelerate a 1.0-kg mass from rest to a speed of 86.6 the ... (Read 120 times)

BrownTown3

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on: Jul 29, 2018
How many joules of energy are required to accelerate a 1.0-kg mass from rest to a speed of 86.6 the speed of light? (c = 3.00  108 m/s)
 
  A) 2.7  1012 J
  B) 3.0  103 J
  C) 4.5  109 J
  D) 1.8  1017 J
  E) 9.0  1016 J

Question 2

The focal lengths of the objective lens and the eyepiece in a microscope are 0.29 cm and 2.50 cm, respectively. An object is placed at 0.
 
  30 cm from the objective lens and the image of this object is viewed with the eyepiece adjusted for minimum eyestrain for persons with a near point of 25 cm. The magnitude of the final overall magnification of the microscope is closest to
  A) 200 B) 500 C) 100 D) 410 E) 300


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mtmmmmmk

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

E

Answer to Question 2

E


BrownTown3

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Reply #2 on: Jul 29, 2018
Thanks


mtmmmmmk

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Reply #3 on: Jul 29, 2018
Welcome :)


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