Phase Angles: A series circuit containing an inductor and a resistor is driven by a 120-V 60-Hz voltage source. The resistance is equal to 20.0 ? and the inductance is 160 mH. What is the phase angle between the current the the applied voltage?
What will be an ideal response?
The current lags by 72°
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In what way does our theory of nuclear fusion predict that the Sun should be different today than it was when fusion began about 4-1/2 billion years ago?
A) The Sun's mass should be about 30% higher today. B) The Sun's mass should be about 30% lower today. C) The Sun's luminosity should be about 30% higher today. D) The Sun's radius should be about 30% higher today. E) The Sun's distance from Earth should be about 30% lower today.
________ galaxies may contain a few million to few trillion solar masses.
A. Spiral B. Independent of their type C. Irregular D. Elliptical
You walk 53 m to the north, then turn 60° to your right and walk another 45 m. Determine the direction of your displacement vector. Express your answer as an angle relative to east
A) 63° N of E B) 50° N of E C) 57° N of E D) 69° N of E
A certain radio wave has a wavelength of 6.0 × 10^-2m. What is its frequency in hertz?