Sound travels along a telephone cable at 1.91 * 10^8 ms^-1 .how long does it take tetsuo's voice to travel from his office phone in tokyo to his wife's phone 3740m away?

1.958 * 10^-5 seconds  or 0.00001958 seconds.

Step-by-step explanation:

3740 = 3.74 * 10^3  in scientific notation.

Time = distance / speed.

= 3. 74 * 10^3 / 1.91 * 10^8

= 1.958 * 10^-5 seconds.

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