A circuit joins points A, B, C and D into a single square loop. The voltage drop from A to B, B to C and C to D are -5.2V, 2.1V, and 1.0V, respectively. If one were to measure the voltage drop from C to B, one would obtain:
A. 2.1V
B. -4.1V
C. -6.1V
D. -2.1V
E. 4.1V
F. 6.1V
D. -2.1V
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A supersonic plane passes overhead at a speed of 500 m/s. If you hear the sonic boom (shock wave) 4.00 s after the plane is directly overhead, at what altitude is the altitude the plane flying? Assume the speed of sound in air is 340 m/s
A) 1.36 km B) 2.16 km C) 1.85 km D) 2.45 km E) The plane is not flying fast enough to produce a shock wave.
State the Equivalence of Physical Laws postulate of special relativity
What will be an ideal response?
Transformers: An ideal step-up transformer doubles a primary voltage of 110 V. What is the ratio of the number of turns in its primary coil to the number of turns in the secondary coil?
A. 1:4 B. 4:1 C. 2:1 D. 1:2 E. 1:8
A 0.10-?F capacitor is connected to a 120-V rms 60-Hz source
(a) What is its capacitive reactance? (b) What is the rms current to the capacitor? (c) If both the capacitance and the frequency were doubled, what would be the rms current? What will be an ideal response?