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Author Question: A 320-g air track cart is traveling at 1.25 m/s and a 270-g cart traveling in the opposite direction ... (Read 84 times)

luvbio

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on: Jul 29, 2018
A 320-g air track cart is traveling at 1.25 m/s and a 270-g cart traveling in the opposite direction at 1.33 m/s. What is the speed of the center of mass of the two carts?
 
  A)
 
  2.80 m/s
 
  B)
 
  0.0693 m/s
 
  C)
 
  0.131 m/s
 
  D)
 
  1.47 m/s
 
  E)
 
  1.29 m/s

Question 2

Electromagnetic waves are
 
  A)
 
  transverse.
  B)
 
  circular waves.
  C)
 
  alternating between longitudinal and transverse.
  D)
 
  surface waves.
  E)
 
  longitudinal.


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bobsmith

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

B

Answer to Question 2

A


luvbio

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Reply 2 on: Jul 29, 2018
Gracias!

nguyenhoanhat

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Reply 3 on: Yesterday
:D TYSM

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