I the inductance and the capacitance both double in an LRC series circuit, the resonate frequency of that circuit will
A. decrease by a factor of 1?2.
B. decrease by a factor of 1/4.
C. increase by a factor of 2.
D. increase by a factor of 4.
A. decrease by a factor of 1?2.
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Which of the following statements about Mars is not true?
A) We could survive on Mars without spacesuits, as long as we brought oxygen in scuba tanks. B) We have landed robotic spacecraft on its surface. C) It has mountains that are taller than the tallest mountains on Earth. D) Its surface is frozen today, but evidence indicates it had flowing water in the distant past.
The sketch shows groups of stars on the H-R diagram, labeled (a) through (e); note that (a) represents the entire main sequence, while (c) and (d) represent only small parts of the main sequence. Which group represents stars fusing hydrogen in their cores?
A) a B) b C) c D) d E) e
The most common carbonate rock is
A) dolomite. B) calcite. C) halite. D) limestone.
If R = 3.0 k?, C = 6.0 nF, ? 1 = 10.0 V, Q = 18 nC, ? 2 = 6.0 V, and I = 5.0 mA, what is the potential difference Vb ? Va?
a.
?13 V
b.
+28 V
c.
+13 V
d.
?28 V
e.
+2.0 V