Kirchhoff's Rules: A multiloop circuit is shown in the figure. Find the current I1 if the batteries are ideal. (It is not necessary to solve the entire circuit.)
A. -2 A
B. 2 A
C. 6 A
D. -5 A
E. 0 A
Answer: A
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If object A has more mass than object B,
a. A will weigh more than B. b. A will be harder to accelerate than B. c. A will be harder to keep moving in a circle. d. all of the above
RC Circuits: For the circuit shown in the figure, V = 20 V, C = 10 µF, R = 0.80 M?, and the battery is ideal. Initially the switch S is open and the capacitor is uncharged. The switch is then closed at time t = 0.00 s. What is the potential difference across the resistor 20 s after closing the switch? 
A. 1.6 V B. 2.0 V C. 2.3 V D. 2.6 V E. 3.0 V
The thing that is different between x-rays and radio waves is
1) their charges, 2) their masses, 3) their frequencies, 4) the medium through which they travel, 5) the speeds at which they travel, and the thing that is the same for x-rays and radio waves is 6) their masses. 7) their frequencies. 8) the medium through which they travel. 9) the speeds at which they travel. 10) none of these.
In color photos, spirals typically have ________ arms with pink H II regions
Fill in the blank(s) with correct word