Three resistors, 10 ?, 20 ?, and 30 ?, are wired in series and connected to a 120-V battery. How much current flows in the circuit?
2.0 A
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Why are molecular lines more complex than elemental spectral lines?
A) Molecules have two or more atoms.
B) Molecules can vibrate and rotate as well.
C) Molecules are heavier than atoms.
D) Molecules are the basis of life.
E) Most of the universe is made of molecules, not individual atoms.
Stable fusion reactions end when ________ builds in a high-mass star's core
Fill in the blank(s) with correct word
A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.The power consumed by the light bulb in watts is
a. 0.05 b. 20. c. 720 d. none of the above.
What do we know about the direction of momentum?
a. It has the same direction as the object's speed. b. It has the same direction as the object's acceleration. c. It has the same direction as the object's weight. d. It has the opposite direction to the object's velocity. e. It has the same direction as the object's velocity.