Concept explainers
a.
To calculate: the speed of waves.
a.

Answer to Problem 56E
speed of the waves is 38.39 mi/h.
Explanation of Solution
Given information: A storm near Antarctica generates a series of waves with a period of 11 seconds.
Formula used: the equation provided to solve the problem,
s = speed
T = time
Calculation:
Consider,
T = 11 seconds
Then, speed of the waves,
Hence, speed of the waves is 38.39 mi/h.
b.
To calculate: how many hours the waves will take to reach the Alaskan coast.
b.

Answer to Problem 56E
It will take 8.6 days for the waves to reach the Alaskan coast.
Explanation of Solution
Given information: waves of the Antarctica storm are 8000 miles away from Alaska.
Formula used: formula provided in the question,
Calculation:
Speed of the waves from part a., 38.39 mi/h
To calculate the time, it will take to reach Alaska,
Convert 208. 3h into days,
Hence, it will take 8.6 days for the waves to reach the Alaskan coast.
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Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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