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Author Question: The two major physical theories of the 20th century are A) superconductivity and the theory of ... (Read 104 times)

bio_gurl

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on: Jul 29, 2018
The two major physical theories of the 20th century are
 
  A) superconductivity and the theory of light.
  B) electromagnetic theory and quantum theory.
  C) quantum theory and the theory of relativity.
  D) the theory of relativity and electromagnetic theory.
  E) electromagnetic theory and the theory of gravity.

Question 2

In an air-free chamber, a pebble is thrown horizontally, and at the same instant a second pebble is dropped from the same height. Compare the times of fall of the two pebbles.
 
  A) The thrown pebble hits first.
  B) The dropped pebble hits first.
  C) They hit at the same time.
  D) We cannot tell without knowing which pebble is heavier.
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momo1250

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

C

Answer to Question 2

C


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bio_gurl

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Reply #2 on: Jul 29, 2018
TY


momo1250

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


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