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Author Question: A radar operator on Earth sees two spaceships moving straight at each other, each with speed 0.60c. ... (Read 90 times)

Deast7027

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on: Jul 27, 2018
A radar operator on Earth sees two spaceships moving straight at each other, each with speed 0.60c. With what speed does the pilot of one ship see the other ship approaching?
 
  What will be an ideal response?

Question 2

A telescope has an angular magnification of 250. when operated with a 20. mm eyepiece. What is the focal length of the objective?
 
  A) 5.0 cm
  B) 25. meters
  C) 5000. cm
  D) 5.0 meters
  E) 2.5 m
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pikon

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Reply #1 on: Jul 27, 2018
Answer to Question 1

0.88c

Answer to Question 2

D


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Deast7027

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Reply #2 on: Jul 27, 2018
TY


pikon

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Reply #3 on: Jul 27, 2018
You're welcome


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