Reminder Round all answers to two decimal places unless otherwise indicated.
Height of Tsunami Waves When waves generated by tsunamis approach shore, the height of the waves generally increases. Understanding the factors that contribute to this increase can aid in controlling potential damage to areas at risk.
Green’s law tells how water depth affects the height of a tsunami wave. If a tsunami wave has height
a. Calculate the height of a tsunami wave in water
b. If water depth decreases by half, the depth ratio
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Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
- Mortgage Rates The following table is taken from the website of Freddie Mac. It shows rates for 30-year fixed-rate mortgages since 1970. y=Year r=Mortgagerate 1975 9.05 1980 13.74 1985 12.43 1990 10.13 1995 7.93 2000 8.05 2005 5.87 2010 4.69 2015 3.84 a. Explain in practical terms the meaning of r(2003). b. Use the table to estimate the value of r(2003).arrow_forwardTEST YOUR UNDERSTANDING | FOR EXAMPLE 4.14 If light arriving from a star is twice the intensity of the light from Vega, what is the magnitude of the star? Caution: Is the relative intensity 2 of 1/2?arrow_forwardImmigration The following graph shows immigrationin thousand to the United States has varied over the past century. Source: Homeland Security. a. Find the average annual rate of change in immigration for the first half of the century from 1905 to 1955. b. Find the average annual rate of change in immigration for the second half of the century from 1955 to 2005. c. Find the average annual rate of change in immigration for the entire century from 1905 to 2005. d. Average your answers to part a and b, and compare the result with your answer from part c. Will these always be equal for any two time periods? e. If the annual average rate of change for entire century continues, predict the number of immigrants in 2009. Compare answer to the actual number of 1,130,818 immigrants.arrow_forward
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