Meters: Decreasing the resistance of an ammeter's shunt resistance
A. allows it to measure a larger current at full scale deflection.
B. allows it to measure a smaller current at full scale deflection.
C. enables more current to pass directly through the galvanometer.
D. converts it to a voltmeter.
Answer: A
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What effect does the precession of the Moon's nodes have on eclipses?
A) It causes us to have lunar eclipses exactly every 6 months. B) It causes eclipses to occur a little less often than they would if the nodes did not precess. C) It causes eclipses to occur a little more often than they would if the nodes did not precess. D) Without this precession, eclipses could never occur. E) Without this precession, eclipses would occur every month.
Which of the following best describes a breadcrumb trail?
A. A hidden menu that expands when a visitor points to or clicks on it. B. A menu that drops down to display subcategories when the visitor points to or clicks on it. C. An index of pages on a website, presented on a separate site map page. D. A hierarchical outline or horizontal list that shows the path from the home page to the currently viewed page.
The circuit below contains 3 100-W light bulbs and a capacitor. The emf is 110 V. Which light bulb(s) is(are) brightest? (Assume the capacitor is fully charged.)
a.
A
b.
B
c.
C
d.
A and B
e.
All three are equally bright.
Foucault's pendulum:
a. continues to swing back and forth in the same fixed direction relative to the ground. b. keeps swinging faster because the centrifugal force of Earth's rotation affects its weight. c. changes how far it goes on each swing because of Earth's motion around the Sun. d. changes the direction of its back and forth swing because Earth rotates beneath it. e. changes the direction of its back and forth swing because of gravity.