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18.12.2019 •
Computers and Technology
Why is the vigenere cipher hard to crack? (select 2)
a. one cannot solve using frequency analysis directly.
b. the key length is variable and potentially very long
c. the key is always secret to both the sender and receiver of the message.
d. a vigenere cipher relies upon an "alphabet shift" algorithm.
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Ответ:
Ответ:
0.4 A
Explanation:
From the question,
Electric power = Voltage×current
P = VI Equation 1
Make I the subject of the equation
I = P/V Equation 2
Given: P = 96 J/s, V = 230 V.
Substitute into equation 2
I = 96/230
I = 0.4 A.
Hence the current is 0.4 A