What observational evidence supports the fact that our universe is static and unchanging?
a. Detection of the cosmic microwave background (CMB)
b. Dark sky at night
c. Redshift of galaxies
d. Evolution of galaxies with distance
e. None of the above
E
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Angular and Linear Quantities: A wheel of diameter 0.70 m rolls on the floor without slipping. A point at the top of the wheel moves with a speed 2.0 m/s relative to the floor.(a) At what speed is the central axis of the wheel moving relative to the floor?(b) What is the angular speed of the wheel?
What will be an ideal response?
Shock waves from supernovae disrupt an interstellar cloud and prevent it from forming stars
Indicate whether the statement is true or false
A boy throws a ball with an initial velocity of 25 m/s at an angle of 30° above the horizontal. If you neglect air, how high above the projection point is the ball after 2.0 s?
A) 5.4 m B) 13 m C) 25 m D) 43 m E) 50 m
As global warming progresses, the
A) landmasses will warm the most B) equatorial regions will warm the most C) polar regions will warm the most D) oceans will warm the most