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Home Q & A Board Science-Related Homework Help Physics Astronomy
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psatana8 psatana8
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6 years ago
The center of mass and the center of gravity coincide
 
  A) only if the object is symmetrical.
  B) only if the object is symmetrical and it is in a uniform gravitational field.
  C) if the object is in a uniform gravitational field.
  D) at all times.

Question 2

An object is thrown upwards with a speed of 13 m/s. How long does it take to reach a height of 4.0 m above the projection point while descending?
 
  A) 0.42 s
  B) 1.2 s
  C) 2.3 s
  D) 3.1 s
  E) 4.2 s

Question 3

At higher altitudes water boils at ________ temperature as/than at sea level.
 
  A) a lower
  B) a higher
  C) the same

Question 4

An airplane with an airspeed of 120. km/h is headed 30.0 East of North in a wind blowing due West at 30. km/h. What is the groundspeed of the plane?
 
  What will be an ideal response?

Question 5

What was the approximate diameter of the object which denoted in the sky above Chelyabinsk in 2013?
 
  A) 10 km
  B) 20 meters
  C) 1 meter
  D) 100 meters
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StewartStewart
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6 years ago
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psatana8 Author
wrote...
#2
6 years ago
Dude, you're awesome. I wish I had you as my teacher!
wrote...
#3
6 years ago
Come to the forum always, I'll be around to assist you again
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