At totality during the lunar eclipse, the Moon generally appears ________ in color.
A. reddish
B. greenish
C. yellowish
D. bluish
Answer: A
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The ____ regions contain only old stars. The younger ones have ended their lives. And the ____ regions contain both young and old stars and the young, more luminous ones dominate the light.
A.) Red, blue. B.) Red, red. C.) Blue, blue. D.) Blue, red.
Which of the following quantities has the same dimensions as kinetic energy, ?
Note: [[a]] = [[g]] = LT?2; [[h]] = L and [[v]] = LT?1.
A. ma B. mvx C. mvt D. mgh E. mgt
A large cast iron plate at 300ºC is suddenly subjected to a coolant at 15ºC and where the convective heat transfer coefficient is 100 W/m^2 K. For the figure shown, write the node equations for nodes 1 and 2. Then estimate T1 after 18 seconds.
Which of the following is a scalar quantity?
A) velocity B) acceleration C) displacement D) mass E) force