Which of the following best represents the energy transformations occurring in a wind-generated power plant?
A) electric ? thermal ? kinetic
B) kinetic ? electric ? thermal
C) thermal ? kinetic ? electric
D) chemical ? thermal ? electric
E) kinetic ? thermal ? electric
E
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RMS and Peak Quantities: A 100-W light bulb is powered by 120 V ac 60.0-Hz household connection. Determine the rms current and the current amplitude.
What will be an ideal response?
Which of the following planets is the most likely place for life to exist in the Solar System?
A) Venus B) Mars C) Jupiter D) Mercury
Pulsars are thought to be ________
A) unstable high-mass stars B) accreting black holes C) rapidly rotating neutron stars D) accreting white dwarfs
The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H. When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
a.
E.
b.
F.
c.
G.
d.
H.
e.
A.