Chapter 01, Problem 02!5 Flving Circus of Physics During heavy rain, a section o

Question

Chapter 01, Problem 02!5 Flving Circus of Physics During heavy rain, a section of a mountainside ing 2.9 km horizontally (perpendicular to the slope), 1.2 km up along the slope, and 1.0 m deep slips into a valley in a mud slide. Assume that the mud ends up uniformly distributed over a surface area of the valley measuring 1.2 km x 1.2 km and that the mass of a cubic meter of mud is 1900 kg. What is the mass of the mud sitting above a 3.3 m2 area of the valley floor? Number Units the tolerance is +/-2%

Explanation / Answer

volume of mud which slides

is 2900 X 1200 X 1 = 3480000 m3

area A = 1.2 X 1.2

depth X 1200 X 1200 = 3480000

depth = 3480000 / 1200 X 1200

depth = 2.41666 m

mass = 3.3 X 2.41666

= 7.974 m3

= 7.974 X 1900

mass = 15152.4582 kg

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