In an RLC ac circuit, the values of the inductance and capacitance are both doubled. As a result of this change, the resonance frequency of the circuit is
A) twice the original value.
B) four times the original value.
C) the same as before.
D) reduced to one-fourth the original value.
E) reduced to one-half the original value.
E
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Determine the Prandtl number for the syrup of problem 4.7. The thermal conductivity for the syrup is 1 W/m?K and the specific heat is 4 kJ/kg?K.
What will be an ideal response?
Scientists today do not accept the Ptolemaic model because:
A) it is ancient history. B) it was too complicated, compared to Copernicus' heliocentric model. C) it has been shown that Ptolemy faked his data. D) it had no explanation for retrograde motion. E) the work of Tycho and Kepler showed the heliocentric model was more accurate.
Light from inside a raindrop that exits into the air
A) slows down. B) remains at speed c. C) speeds up. D) none of the above
A possible means of spaceflight is to place a perfectly reflecting aluminized sheet into Earth orbit and use the light from the sun to push this solar sail. If a huge sail of area 6.00 × 10^5 m2 and mass 6000 kg were placed into orbit and turned toward the sun, what would be the force exerted on the sail? (Assume a solar intensity of 1380 W/m2.)