The absolute potential at the center of a square is 3. V when a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's center when a second charge of -Q is placed at one of the remaining corners?
A) zero
B) 6 V
C) 12 V
D) -6 V
E) -12 V
A
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"Absolute Zero" is what temperature on the Celsius and Fahrenheit scales respectively?
A) -459°C, -273°F B) -273°C, -212°F C) -212°C, -273°F D) -273°C, -459°F E) 0°C, 459°F
Draw the structural formula for glycine, the simplest amino acid
For an ohmic conductor, current is
a. directly proportional to voltage. b. directly proportional to resistance. c. independent of resistance. d. independent of voltage.
Given that Earth's actual distance from the Sun varies by less than 3% over the course of a year, why does the diagram look so elliptical?
A) It correctly shows that Earth is closest to the Sun at points A and C and farthest at points B and D. B) The elliptical shape is an effect of perspective, since the diagram shows an almost edge-on view of a nearly circular orbit. C) The shape of the diagram is meaningless and is done only for artistic effect.