A series RLC circuit connected across an ac voltage source will have a positive value of the phase angle at high frequencies
Indicate whether the statement is true or false
TRUE
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An AC voltage source, with a peak output of 122 V, is connected to a 54.0-? resistor. What is the rate of energy dissipated due to heat in the resistor?
a. 276 W b. 138 W c. 68.9 W d. 195 W e. 87.7 W
The nucleus of a hydrogen atom, a proton, sets up an electric field. The distance between the proton and electron is about 5.1 × 10^?11 m. What is the magnitude of the electric field at this distance from the proton? [The charge on the proton is +1.6 × 10^?19 C.]
A bat is flying toward a cave wall. If it hears reflected sound of frequency 60.9 kHz, what is its flying speed, assuming it emits sound at 52.0 kHz? The speed of sound is 341.5 m/s.
A. 25.9 m/s B. 28.1 m/s C. 49.9 m/s D. 26.9 m/s E. 58.4 m/s
In nuclear fusion, energy is produced because:
a) Hydrogen is not stable. b) the mass of the reacting chemicals is larger than that of the products. c) of the energetic impact of collisions. d) gravity leads to collapse. e) positrons are produced.