Compute the effective file entropy Hf (xx.x bits) of the file that contains the following symbol sequence
AAABAAACAAADAAAEAAAF
Pe[A] = 15/20 = 0.75, Pe[B] = 1/20 = 0.05, Pe[C] = 0.05, Pe[D] = 0.05, Pe[E] = 0.05, , Pe[F] = 0.05. ^HS = -? Pe[Xi] log2 Pe[Xi] = -(0.75)(-0.42) –(5)(0.05)(-22.02) = 1.39 bits/symbols.Hf= 1.39 bits/symbols x 20 symbols = 27.8 bits
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A vehicle circuit is powered by 12 volts. The technician measures 1 amp of current flow. What is the resistance of the circuit?
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f a circuit has 12 amps of current and the resistance is 20 ohms, the applied voltage is _____.