What resistance is needed in series with a 10-?F capacitor at 1.0 kHz for a total impedance of 45 ??
A) 42 ? B) 1.8 ? C) 61 ? D) 29 ?
A
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Exhibit 17-3Four wave functions are given below. I.y(x, t) = 5sin(4x- 20t + 4) II.y(x, t) = 5sin(3x- 12t + 5) III.y(x, t) = 5cos(4x + 24t + 6) IV.y(x, t) = 14cos(2x- 8t + 3)Use this exhibit to answer the following question(s). Refer to Exhibit 17-3. Rank the wave functions in order of the magnitude of the wave speeds, from least to greatest.
A. IV, II, I, III B. IV = II, I, III C. III, I, II, IV D. IV, I, II, III E. III, IV, II, I
In an ac circuit, if the peak value of the voltage is 100 V, what is the rms value?
A) 141 V B) 100 V C) 210 V D) 71 V E) 120 V
Find the frequencies of the first three harmonics of a 1.0-m long string which has a mass per unit length of 2.0 × 10?3 kg/m and a tension of 80 N when both ends are fixed in place.
What will be an ideal response?
A ball is projected upward at time t = 0 s, from a point on a flat roof 10 m above the ground. The ball rises and then falls, missing the roof, and strikes the ground
The initial velocity of the ball is Consider all quantities as positive in the upward direction. Neglect the effects of air. At time the vertical velocity of the ball is closest to A) 0 m/s. B) +175 m/s. C) +12 m/s. D) -175 m/s. E) -12 m/s.