A series LR circuit dissipates 60 W. The circuit is powered by a 120 V rms 60 Hz supply. If the current is 2.0 A rms, what is the circuit resistance?
A. 50
B. 60
C. 15
D. 10
E. 24
C. 15
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Answer the following statement true (T) or false (F)
Four 1.5-volt AA batteries in series power a transistor radio. If the batteries hold a total charge of 200 C, how long will they last if the radio has a resistance of 200 ??
a. 6.0 h b. 1.9 h c. 2.6 h d. 1.4 h e. 2.4 h
A monochromatic light is incident on a Young's double slit setup that has a slit separation of 30.0 ?m. The resultant bright fringe separation is 2.15 cm on a screen 1.20 m from the double slit
What is the separation between the third-order bright fringe and the zeroth-order bright fringe? A) 8.60 cm B) 7.35 cm C) 6.45 cm D) 4.30 cm E) 2.70 cm
A 0.80-kg object tied to the end of a 2.0-m string swings as a pendulum. At the lowest point of its swing, the object has a kinetic energy of 10 J. Determine the speed of the object at the instant when the string makes an angle of 50° with the vertical
a. 5.6 m/s b. 4.4 m/s c. 3.3 m/s d. 5.0 m/s e. 6.1 m/s