The centers of granules
a. are hot material rising to the photosphere from below.
b. are cool material falling from the photosphere to the regions below.
c. are fainter and hotter than their surroundings.
d. are brighter and cooler than their surroundings.
e. show strong Zeeman effects.
A
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What is the universe mostly made of?
A) ordinary matter, including intergalactic gas B) dark matter C) electromagnetic radiation D) neutrinos E) None of the above.
The point P lies along the perpendicular bisector of the line connecting two long straight wires S and T perpendicular to the page. A set of directions A through H is shown next to the diagram. When the two equal currents in the wires are directed up out of the page, the direction of the magnetic field at P is closest to the direction of
a.
E.
b.
F.
c.
G.
d.
H.
e.
A.
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Answer the following statement true (T) or false (F)
The symbol indicating the atomic number of a nucleus is A
a. True b. False Indicate whether the statement is true or false