Engineering » Page 117

Brayden Krueger

Engineering

The hydrograph from a 5-hour storm measured at the outlet of a seasonal creek is shown below. The average concentration of lead in the runoff is assumed to be 40 mg/L based on previous sampling. What is most nearly the total mass of lead (in pounds, lb) that the creek contributed to the downstream water body during the storm? (Assume zero base flow).

Time (hr) 0 1 2 3 4 5

Flow rate (cfs) 0.05 0.08 0.15 0.08 0.04 0.02

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Engineering

In a right triangle, the square of the length of one side is equal to the sum of the squares of the lengths of the other two sides. Write a program that prompts the user to enter the lengths of three sides of a triangle and then outputs a message indicating whether the triangle is a right triangle. Assume the user does not know the hypotenuse. You may NOT ask the user for the hypotenuse. Meaning, you have to check all 3 sides to verify that it is a right-angled triangle.

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Gretchen Raymond

Engineering

Are spheroidized steels considered as composite? If so, what is the dispersed phase a) - No b) - Yes, Chromium Carbides c) - Yes, Iron Carbides d) - Yes, Intermetallic Compounds

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Engineering

Intravenous infusions are usually driven by gravity by hanging the bottle at a sufficient height to counteract the blood pressure in the vein and to force the fluid into the body. The height the bottle is raised, the higher the flow rate of the fluid will be.

a) If it is observed that the fluid and the blood pressures balance eachother when the

bottle is 1.2 m above the arm level, determine the gage pressure of the blood. (b) If the gage pressure of the fluid at the arm level needs to be 20 kPa for sufficient flow rate, determine how high the bottle must be placed. Take the density of the fluid to be 1020 kg/m3.

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Brandon Hutchinson

Engineering

A random experiment consists of selecting two balls in succession from an urn containing two black balls and and one white ball. (a) Specify the sample space for this experiment. (b) Suppose that the experiment is modified so that the ball is immediately put back into the urn after the first selection. What is the sample space now? number of repetitions of the experiment in part a? In part b? outcome of the first draw in either of these experiments? (c) What is the relative frequency of the outcome (white, white) in a large (d) Does the outcome of the second draw fron the urn depend in any way on the outcome of the first draw in either of these experiments?

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Engineering

It was found experimentally that a certain material does not change in volume when subjected to an elastic state of stress. Calculate Poisson's ratio for this material?

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Jovanny Mcgrath

Engineering

After Hurricane Katrina there was considerable public outrage that many of the properties were not insured against flooding although they were insured against wind damage. What might explain these different approaches to insurance? A. Predatory insurance policies. B. The risk of flood damage is potentially diversifiable but the risk of wind damage is not. C. The risk of wind damage is potentially diversifiable but the risk of flooding is not. D. Neither the risk of wind damage or the risk of flooding is diversifiable.

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Engineering

What is the biggest challenge for space travel

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Engineering

Burn rate can be affected by: A. Variations in chamber pressure B. Variations in initial grain temperature C. Gas flow velocity D. All of the above

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Engineering

A Capacitor is a circuit component that stores energy and can be charged when current flows through it. A current of 3A flows through a capacitor that has an initial charge of 2μC (micro Coulombs). After two microseconds, how much is the magnitude of the net electric charge (in μC) of the capacitor?

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Engineering

If a ship floating in the ocean weighs 1 million metric tons, approximately what volume of water does it displace? a. 1 million cubic meters b. 1 million cubic centimeters C. 1 million liters d. Not enough information to determine the volume of water e. None of the above

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Engineering

Explain the following boundary layer concepts (i) Boundary layer thickness (ii) Boundary layer transition

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Engineering

Explain polygon law of vector. Derive an expression for resultant vector

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Caiden Bradshaw

Engineering

What happens when the internal coil of a elementary alternator moves parallel to the magnetic Feilds lines of force

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Engineering

What simple machines are used in a mechanical pencil

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