What potential difference is required across an 8.0-? resistor to cause 2.0 A to flow through it?
What will be an ideal response?
16 V
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Which of the following indicates the presence of high-mass stars in a region of recent star formation?
A) closely spaced low-mass stars B) ionization nebulae C) globular clusters D) planetary nebulae
What is the temperature of a system in thermal equilibrium with another system made up of ice and water at one atmosphere of pressure?
a. 0°F b. 273 K c. 0 K d. 100°C
LR Circuits: A resistor and an inductor are connected in series to a battery. The time constant for the circuit represents the time required for the current to reach
A. 25% of the maximum current. B. 37% of the maximum current. C. 63% of the maximum current. D. 75% of the maximum current. E. 100% of the maximum current.
Suppose an object is in free fall. Each second the object falls:
a. the same distance as in the second before. b. a larger distance that in the second before. c. with the same instantaneous speed. d. with the same average speed. e. none of above