AIEEE Exam

The Colorado river drops from 3200 feet at Lake Mead to 900 feet elevation at Lee's Ferry, a river distance of 270 miles. What is the gradient in degrees?

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AIEEE Other Question

The S wave shadow zone is caused by the outer core not transmitting S waves. It crosses an arc of 105 degrees on the Earth (see the diagram on the left). Estimate the radius of the outer core. The radius of the entire Earth is 6370 km he angle of repose is the steepest angle at which dry, unconsolidated sediment is stable. You create a conical pile of sand that is as steep as you can make it. The pile is 11 cm high and has a radius of 16 cm. What is the angle of repose of this sand?