The phase angle of an RLC series ac circuit with an inductive reactance of 200 ? and a capacitive reactance of 100 ? is 40.0°. What is the resistance of the resistor in this circuit?
A) 100 ? B) 200 ? C) 156 ? D) 119 ? E) 265 ?
D
Physics & Space Science
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A galaxy with almost no starlight but plenty of cool clouds of hydrogen gas would be best observed with a(n) ________ telescope.
A. optical (visible-light) B. radio C. X-ray D. infrared
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A driver in a 1000 kg car traveling at 20 m/s slams on the brakes and skids to a stop. If the coefficient of friction between the tires and the horizontal road is 0.80, how long will the skid marks be?
A) 26 m B) 21 m C) 33 m D) 24 m
Physics & Space Science
How do earthquakes allow us to model the structure of Earth's core?
What will be an ideal response?
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Which of these does not have an electrical charge?
A) proton B) electron C) neutron D) all of the above E) none of the above
Physics & Space Science