The graphs below represent current and voltage phasors at one instant of time. The solid arrows represent the voltage phasors, ?Vmax, and the dashed arrows represent the current phasors, Imax. Which graph shows the correct relationship between current and voltage phasors for a capacitor in an RC circuit?
A.
B.
C.
D.
E.
Answer: C
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The constellation shaped like a big square (the "great square of . . . "), which can be used to help locate the March equinox in the sky, is
A) Cassiopeia. B) Pegasus. C) Canis Major. D) Taurus. E) Andromeda.
Refer to the data in the introduction. Rank the seasons for the Southern Hemisphere based on Earth’s distance from the Sun when each season begins, from closest to farthest.
What will be an ideal response?
After I dip a cup of water from the ocean, I can conclude that
A. the ocean temperature is higher because it never loses its heat. B. the ocean temperature is higher because it has more molecules in it. C. the temperature of the water in the cup is the same as the temperature of the water in the ocean. D. the temperatures are the same but the water in the cup has more energy.
A solid metal wire has a certain resistance. It is heated and carefully stretched to form a longer, thinner wire. After it cools, the resistance is _______ than it was before
a. greater b. less c. no more d. lighter