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Author Question: A visual defect wherein a person can see distant objects clearly but not nearby objects is called ... (Read 64 times)

james0929

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on: Jul 28, 2018
A visual defect wherein a person can see distant objects clearly but not nearby objects is called
 a. dispersion.
  b. destructive interference.
  c. farsightedness.
  d. nearsightedness.

Question 2

Two spaceships traveling in opposite directions along parallel lines measure their own and the other spaceship's length while passing one another. The crew on spaceship A says that their ship is 1000 m long and that ship B is 800 m long. The crew on ship B says that their ship is 1000 m long and that ship A is 800 m long. At what speed does each crew say that the other ship is traveling relative to their own ship?
 a. 0.36 c
  b. 0.60 c
  c. 0.64 c
  d. 0.80 c
  e. 1.25 c


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coyin

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Reply #1 on: Jul 28, 2018
Answer to Question 1

c

Answer to Question 2

b


james0929

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Reply 2 on: Jul 28, 2018
Gracias!

xiaomengxian

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

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