If the R-value of a wall is 10 ft2-?F-hr/Btu, then the rate of heat transfer through a 2 ft × 3 ft section of wall, with ?T = 50°F, will be:
a. 10 b. 30 c. 500 d. 3000 e. 10,000 Btu/hr
b
Physics & Space Science
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On a graph plotting galaxy luminosities against galaxy colors, the red sequence represents galaxies that are ________ than galaxies of the blue cloud.
A) larger and more elliptical B) smaller and more irregular in shape C) more likely to have spiral shapes D) hotter and less luminous
Physics & Space Science
In Robert Frost's classic poem, when he ends with "ice will suffice," the universe is:
A) closed. B) critical density. C) open. D) Euclidean. E) Relativistic.
Physics & Space Science
If the electric flux through a closed surface is zero, the electric field at points on that surface must be zero
A) True B) False
Physics & Space Science
Most hot Jupiters are thought to have formed in the orbits they have been discovered
Indicate whether the statement is true or false
Physics & Space Science