Which of the following fibers has the highest specific tensile strength?
(a) Kevlar
(b) OUHMWPE
(c) SiC
(d) Boron
(b) OUHMWPE
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For a 10 mol mixture of air (8 mols nitrogen, N2, and 2 mols oxygen, O2) at 101 kPa, 20ºC, determine the mass concentration and the molar concentration of N2 and O2.
What will be an ideal response?
As a blackbody becomes hotter it will radiate ____
a. less energy, at a longer wavelength of maximum intensity b. less energy, at a shorter wavelength of maximum intensity c. more energy, at a longer wavelength of maximum intensity d. more energy, at a shorter wavelength of maximum intensity e. more energy, at a constant wavelength of maximum intensity
The majority of dark matter is normal protons and neutrons
Indicate whether the statement is true or false
One of the least environmental concerns with incineration of waste is
a. emission of dioxins b. particulate emissions c. heat addition to rivers d. metal concentrations in ash