Earth's core is slightly hotter than the surface of the Sun.
Answer the following statement true (T) or false (F)
True
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A parallel circuit consists of a 100-V DC power source, a 100-? resistor, and a variable resistor of resistance R, which varies from 0 to 100 ?. The current in the circuit is
?
?
A. directly proportional to R. B. inversely proportional to R. C. directly proportional to (100 ? + R). D. inversely proportional to (100 ? + R). E. neither directly nor inversely proportional to R or to (100 ? + R).
The tidal pull of the Moon is an example of a differential force, as the near and far sides of the Earth do not experience the same gravitational pull of the Moon
Indicate whether the statement is true or false
When a wool blanket is used to keep warm, what is the primary insulating material?
a. wool b. air c. the trim around the edge of the blanket d. a thin layer of aluminum foil (usually not apparent) inside the blanket
For the principle quantum number n = 4, how many values can the orbital quantum number have?
A. 9 B. 5 C. 4 D. 3 E. 32