RLC Circuits: A series circuit has a 100-? resistor, a 0.100-?F capacitor, and a 2.00-mH inductor connected across a 120-V rms ac source operating at resonant frequency. What is the rms value of the voltage across the capacitor?
A. 54.0 V
B. 120 V
C. 150 V
D. 533 V
E. 170 V
Answer: E
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A future news release might report that a new planet has been found around a star very similar to our Sun. The system contains other planets as well like our solar system. This newly discovered planet is claimed to have a mass 40 times that of Earth and is located nearly 25 AU from the star it orbits. Which of the following would be a reasonable prediction about this planet, assuming it formed
like our solar system? I. The planet will probably have a mean density of around 5 g/cm3. II. The planet will probably have a radius of around five to ten times greater than Earth's. III. The planet will probably have several satellites. IV. The planet will probably have a composition that is mostly hydrogen and helium. a. I & IV b. I, II, & III c. II, III, & IV d. I, II, & IV e. I, II, III, & IV
The lowest possible temperature a body can approach is called
A. absolute zero. B. "mighty" cold. C. critical temperature. D. triple absolute zero. E. triple point.
A 6.0-?F air-filled capacitor is connected across a 100-V potential source (a battery). After the battery fully charges the capacitor,
it is left connected and the capacitor is immersed in transformer oil, which has a dielectric constant of 4.5. How much additional charge flows from the battery onto the capacitor during this process? A) 1.2 mC B) 1.7 mC C) 2.1 mC D) 2.5 mC
A temperature of –65 Kelvin is equivalent to _____ degrees Fahrenheit
a. –576.7 b. 208.0 c. –53.9 d. –338.0