The Hoover Dam backs up the Colorado River and creates Lake Mead, which is approximately 115 miles long and has a surface area of approximately 225 square miles. If during flood conditions, the Colorado River flows into the lake at a rate of 45,000 cfs and the outflow from the dam is 8,000 ft3/s, how many feet per 24-hour day will the lake level rise

9514 1404 393

  0.510 ft per 24-hour period

Step-by-step explanation:

We can first find the change in volume in a day:

  (45,000 cfs -8,000 cfs)×(3600 s/h)×(24 h/day) = 3.1968×10^9 ft³/day

The area in square feet is about ...

  (225 mi²)×(5280 ft/mi)² = 6.27264×10^9 ft²

Then the rate of change of height is ...

  h' = ΔV/A = (3.1968×10^9 ft³/day)/(6.27264×10^9 ft²) ≈ 0.510 ft/day

For the given flows, the lake level will rise about 0.510 feet per day.

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)

required rate of return = 0.166 = 16.6%

step-by-step explanation:

under the capital asset pricing model (capm), the required or expected rate of return for a particular security or asset is given using the formula:

required rate of return = risk-free rate + beta*(market risk premium)

we are given that;

risk-free rate = 4% = 0.04

beta = 1.4

market risk premium = 9% = 0.09

we simply plug these values into the above formula;

required rate of return = 0.04 + 1.4*(0.09)

required rate of return = 0.04 + 0.126

required rate of return = 0.166 = 16.6%