A 120-V rms voltage at 60.0 Hz is applied across an inductor, a capacitor, and a resistor in series. If the rms value of the current in this circuit is 0.600 A, what is the impedance of this circuit?
A) 200 ?
B) 141 ?
C) 20 4 ?
D) 120 ?
E) 100 ?
A
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Two equal forces are applied to a door at the doorknob. The first force is applied perpendicular to the door; the second force is applied at 30° to the plane of the door. Which force exerts the greater torque?
A) the first applied perpendicular to the door B) the second applied at an angle C) both exert equal non-zero torques D) both exert zero torques E) Additional information is needed.
Density: How many grams of ethanol (density 0.80 g/cm3) should be added to 5.0 g of chloroform (density 1.5 g/cm3) if the resulting mixture is to have a density of 1.2 g/cm3? Assume that the fluids do not change their volumes when they are mixed.
A. 2.0 g B. 2.4 g C. 1.8 g D. 4.4 g E. 1.6 g
Leonardo da Vinci's Mona Lisa is 21 inches wide and 30.25 inches tall. What is the area of the painting in square centimeters?
A) 4,100 square cm B) 1,600 square cm C) 660 square cm D) 3,300 square cm E) 2,400 square cm
Carburetors in NASCAR race cars make use of Bernoulli's principle
a. True b. False Indicate whether the statement is true or false