A series LRC ac circuit has a peak current of 1.0 A with a frequency of 54 kHz
If the resistance of the circuit is 51 k?, the capacitance of the circuit is 19 ?F, and the inductance of the circuit is 25 ?H, determine the average power of the circuit.
A) 4.1 kW B) 26 kW C) 77 kW D) 7.7 kW
B
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A satellite that is in a circular orbit 230 km above the surface of the planet Zeeman-474 has an orbital period of 89 min. The radius of Zeeman-474 is 6.38 × 106 m. What is the mass of this planet? (G = 6.67 × 10-11 N ? m2/kg2 )
A) 6.0 × 1024 kg B) 5.5 × 1024 kg C) 5.0 × 1024 kg D) 6.5 × 1024 kg
A nonrelativistic electron and a nonrelativistic proton are moving and have the same de Broglie wavelength. Which of the following are also the same for the two particles?
1.speed 2.kinetic energy 3.momentum 4.frequency
An atom that has gained one or more electrons is called an isotope
a. True b. False Indicate whether the statement is true or false
The interior of a greenhouse emits long-wavelength radiation due to its
A) green color. B) plant cell structure. C) transparency. D) relatively low temperature.