When a workman strikes a steel pipeline with a hammer, he generates both longitudinal and transverse waves. The two types of reflected waves return 2.4 s apart. How far away is the reflection point? (For steel, vL = 6.2 km/s, vT = 3.2 km/s)
7.9 km
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The composite material processing technique where fibers are pulled from a roll into a bath of liquid polymer, formed into the desired shape by a die, and cured in an oven is called _________.
Fill in the blank(s) with the appropriate word(s).
An atom in face centered cubic aluminum has ______________nearest neighbors.
Fill in the blank(s) with the appropriate word(s).
First Law of Thermodynamics: An expandable container holds 2.30 mole of helium, He, gas with an initial pressure of 770 kPa and an initial volume of 2.10 L. The gas expands isothermally to a final pressure of 350 kPa. How much heat is gained by the gas during this process? (R = 8.31 J/mol ? K)
A. 1280 J B. 792 J C. 685 J D. 1370 J E. 1700 J
If you're on a Ferris wheel at a carnival, seated 10 m from the Ferris wheel's axis that makes a complete rotation each minute, your linear speed is
A) 10 m/min. B) 31.4 m/min. C) 62.8 m/min. D) 100 m/min. E) need more information