March 28, 2017

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Posts by qwert

Total # Posts: 6

materials science
An isotropic epoxy resin (E=2GPa, ν=0.3) is reinforced by unidirectional glass fibers (Eglass=70GPa), aligned in the 2 direction, such that the fiber composite is transversely isotropic, with the 1-3 plane being the plane of isotropy. The elastic constants of the fiber ...
October 8, 2015

October 7, 2015

The energy-separation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n first I have: ((A*m)/(B*n))^(1/(m-n)) Derive and expression for the stiffness of the bond at the equilibrium spacing, in terms of A, B, m, n, and r0. S=dF/dr at r=r0:
October 7, 2015

physical sciences
Imagine a circle with a diameter of 2km.if this represents an atom ,which answer would best represent the nucleus?choose the correct answer:a table tennis ball(diameter;2cm)atennis ball(diameter;7cm)avolley ball(diameter;20cm)a soccer ball(diameter;25cm)
January 28, 2013

which conversion factor do you use to first calculate the number of grams of CO2 produced by tge reaction of 50.6 CH with O2? The equation for the complete combustion of methane is: CH4 (g) + 2o2 (g) ---> CO2 (g) +2H2o (l) a. 2 mol O2/1 mol CO2 b. 1 mol CH4/16.0g of CH4 c. ...
December 11, 2011

October 9, 2010

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