Answer:
a)5.28 Å , b)3.73 Å , c)3.048 Å
Explanation:
the atoms are situated only at the corners of cube.Each and every atom in simple cubic primitive at the corner is shared with 8 adjacent unit cells.
Therefore, a particular unit cell consist only 1/8th part of an atom.
The lattice constant of a simple cubic primitive cell is 5.28 Å
We know formula of distance,
d = ![\frac{a}{\sqrt{h^{2}+k^{2}+l^{2}}}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%7D%7B%5Csqrt%7Bh%5E%7B2%7D%2Bk%5E%7B2%7D%2Bl%5E%7B2%7D%7D%7D)
a)(100)
a=5.28 Å
Distance =
=5.28 Å
b)(110)
Distance =
= 3.73 Å
c)(111)
Distance=
= 3.048 Å
I really don’t know good luck
Answer:
The heat of the arc melts the surface of the base metal and the end of the electrode. The electric arc has a temperature that ranges from 3,000 to 20,000 °C
Explanation:
Welding fumes are complex mixtures of particles and ionized gases.
Usually the first digit of the vin id’s the country it was built. So technician A would be correct. That’s usually how it is. Hope this helps. Please let me know if this is incorrect
Answer:
The answer is below
Explanation:
Given that:
Diameter (D) = 0.03 mm = 0.00003 m, length (L) = 2.4 mm = 0.0024 m, longitudinal tensile strength
, Fracture strength
![(\sigma_f)=5100\ MPa=5100*10^6\ Pa,fiber-matrix\ stres(\sigma_m)=17.5\ MPa=17.5*10^6\ Pa,matrix\ strength=\tau_c=17\ MPa=17 *10^6\ Pa](https://tex.z-dn.net/?f=%28%5Csigma_f%29%3D5100%5C%20MPa%3D5100%2A10%5E6%5C%20Pa%2Cfiber-matrix%5C%20stres%28%5Csigma_m%29%3D17.5%5C%20MPa%3D17.5%2A10%5E6%5C%20Pa%2Cmatrix%5C%20strength%3D%5Ctau_c%3D17%5C%20MPa%3D17%20%2A10%5E6%5C%20Pa)
a) The critical length (
) is given by:
![L_c=\sigma_f*(\frac{D}{2*\tau_c} )=5100*10^6*\frac{0.00003}{2*17*10^6}=0.0045\ m=4.5\ mm](https://tex.z-dn.net/?f=L_c%3D%5Csigma_f%2A%28%5Cfrac%7BD%7D%7B2%2A%5Ctau_c%7D%20%29%3D5100%2A10%5E6%2A%5Cfrac%7B0.00003%7D%7B2%2A17%2A10%5E6%7D%3D0.0045%5C%20m%3D4.5%5C%20mm)
The critical length (4.5 mm) is greater than the given length, hence th composite can be produced.
b) The volume fraction (Vf) is gotten from the formula:
![\sigma_{cd}=\frac{L*\tau_c}{D}*V_f+\sigma_m(1-V_f)\\\\V_f=\frac{\sigma_{cd}-\sigma_{m}}{\frac{L*\tau_c}{D}-\sigma_{m}} \\\\Substituting:\\\\V_f=\frac{630*10^6-17.5*10^6}{\frac{0.0024*17*10^6}{0.00003} -17.5*10^6} \\\\V_f=0.456](https://tex.z-dn.net/?f=%5Csigma_%7Bcd%7D%3D%5Cfrac%7BL%2A%5Ctau_c%7D%7BD%7D%2AV_f%2B%5Csigma_m%281-V_f%29%5C%5C%5C%5CV_f%3D%5Cfrac%7B%5Csigma_%7Bcd%7D-%5Csigma_%7Bm%7D%7D%7B%5Cfrac%7BL%2A%5Ctau_c%7D%7BD%7D-%5Csigma_%7Bm%7D%7D%20%20%5C%5C%5C%5CSubstituting%3A%5C%5C%5C%5CV_f%3D%5Cfrac%7B630%2A10%5E6-17.5%2A10%5E6%7D%7B%5Cfrac%7B0.0024%2A17%2A10%5E6%7D%7B0.00003%7D%20-17.5%2A10%5E6%7D%20%5C%5C%5C%5CV_f%3D0.456)