Consider a 4500. ohm resistor in series with a 133. mH inductor. What capacitance should be added in series so that the impedance is a minimum at 500. KHz?
A) 2.67 ?F
B) 0.627 pF
C) 0.762 pF
D) 7.26 ?F
E) 0.267 pF
C
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Two charged particles 1 m apart exert a 1-N force on each other. If the particles are instead 0.25-m apart, the force on each particle will be
A) 1.0 N. B) 2.0 N. C) 4.0 N. D) 8.0 N. E) 16.0 N.
In a solar cell the light initially passes through the n-type silicon to reach the pn-junction where it is desired that the light absorption occur. If we want at least 90 percent of the light entering a silicon solar cell to reach the pn-junction region, what is the maximum thickness of the n-type material for 0.6 ?m light assuming pure silicon?
What will be an ideal response?
One of the factors that escape velocity depends on is the:
A) mass of the celestial body. B) rate of spin of the celestial body. C) magnitude of the surrounding magnetic field. D) rate of atomic reactions within the celestial body.
For a star of Sun-like mass, what is the last stage of the nuclear fusion?
a. Hydrogen to helium b. Helium to carbon and oxygen c. Carbon to magnesium d. Fusion goes all the way up to iron.