The voltage across a 10-ohm resistor carrying a current of 5 A is
A) 2 V.
B) 5 V.
C) 10 V.
D) 20 V.
E) more than 20 V.
Answer: E
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A temperature difference of 5 K is equal to
a. a difference of 9 on the Celsius scale. b. a difference of 9 on the Fahrenheit scale. c. a difference of 2.8 on the Rankine scale. d. a difference of 0.5 on the Fahrenheit scale. e. a difference of 2.8 on the Celsius scale.
A pressure of 10.0 mm Hg is measured at the triple-point of water using a constant-volume gas thermometer. What will the pressure be (in mm Hg) at 50.0°C?
A. 68.3 B. 1.80 C. 31.8 D. 11.8 E. 8.50
What type of lens is used in a pinhole camera?
A. Converging B. Diverging C. Spherical D. No lens is used
An electron has a kinetic energy that is twice its rest energy. Determine its speed.
A. 0.76c B. 0.81c C. 0.94c D. 0.54c E. 0.87c