A 0.10 ?F capacitor is connected to a 120. volt rms 60. Hz source
(a) What is the capacitive reactance?
(b) What is the rms current to the capacitor?
(c) If both the capacitance and the frequency doubled, what would be the current?
(a) 27. K?
(b) 4.5 mA
(c) 18. mA
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The proton is believed to consist of what quark combination? (up, down, strange, charm, top, bottom)
A) uud B) ddu C) uds D) ttb E) bbt
Star A has the peak of its blackbody radiation at ?A. Star B has its peak at ?B, which is one-third that of ?A. If Star A's surface temperature is TA, how does the surface temperature TB of Star B compare?
a. TB = TA/9 b. TB = 3TA c. TB = 9 TA d. TB = TA/3
State the conservation of angular momentum
What will be an ideal response?
Linus claims that the added gravitational force of neutrons holds the particles in a nucleus together. Linnea says that they stick together because they lose their electric charge when they form a nucleus. Which one, if either, is correct, and why?
a. Linus, because more particles exert gravitational forces on one another than exert electromagnetic forces. b. Linus, because the numerical magnitude of G/ke is 7.42 × 10^?21. c. Linnea, because the numerical magnitude of G/ke is 7.42 × 10^?21. d. Both, because electric charge is lost and then gravity holds the nucleus together. e. Neither, because gravity is not lost, and the numerical magnitude of ke/G is 1.35 × 10^20.