Answer:
pre water pressure ![= \sigma_1 = 208.76 kN/m2](https://tex.z-dn.net/?f=%3D%20%5Csigma_1%20%3D%20208.76%20kN%2Fm2)
Explanation:
given data:
frictional angle 25°
unconfined xompressive strength qu = 133 kN/m2
for clay, unconfined compressive strenth is cu
![cu =\frac{qu}{2}](https://tex.z-dn.net/?f=cu%20%3D%5Cfrac%7Bqu%7D%7B2%7D)
cu = 133/2 =66.5 kN/m2
cell pressure
is zero in uncomfined compressive strenth test
from principle effective stress we have
![\sigma_1 = \sigma_2 tan^{2}(45+ \frac{\theta}{2}) +2cu tan(45+ \frac{\theta}{2})](https://tex.z-dn.net/?f=%5Csigma_1%20%3D%20%5Csigma_2%20tan%5E%7B2%7D%2845%2B%20%5Cfrac%7B%5Ctheta%7D%7B2%7D%29%20%2B2cu%20tan%2845%2B%20%5Cfrac%7B%5Ctheta%7D%7B2%7D%29)
![\sigma_1 = 2cu tan(45+ \frac{\theta}{2})](https://tex.z-dn.net/?f=%5Csigma_1%20%3D%202cu%20tan%2845%2B%20%5Cfrac%7B%5Ctheta%7D%7B2%7D%29)
![\sigma_1 = 2*66.5 tan(45+ \frac{25}{2})](https://tex.z-dn.net/?f=%5Csigma_1%20%3D%202%2A66.5%20tan%2845%2B%20%5Cfrac%7B25%7D%7B2%7D%29)
![\sigma_1 = 208.76 kN/m2](https://tex.z-dn.net/?f=%5Csigma_1%20%3D%20208.76%20kN%2Fm2)
as this test is quick test i.e. undrained test therefore
pre water pressure ![= \sigma_1 = 208.76 kN/m2](https://tex.z-dn.net/?f=%3D%20%5Csigma_1%20%3D%20208.76%20kN%2Fm2)
Answer:
539.19 m/s , 459.83 m/s , 2156.78 m/s
Explanation:
The formula for the rms speed is given by
![v_{rms}=\sqrt{\frac{3RT}{M}}](https://tex.z-dn.net/?f=v_%7Brms%7D%3D%5Csqrt%7B%5Cfrac%7B3RT%7D%7BM%7D%7D)
Where, R be the gas constant, T be the absolute temperature and M be the molecular mass of the gas
R = 8.314 in SI units
T = 100°C = 100 + 273 = 373 K
For Oxygen:
M = 32 g = 0.032 kg
![v_{rms}=\sqrt{\frac{3\times 8.314\times 373}{0.032}}](https://tex.z-dn.net/?f=v_%7Brms%7D%3D%5Csqrt%7B%5Cfrac%7B3%5Ctimes%208.314%5Ctimes%20373%7D%7B0.032%7D%7D)
vrms = 539.19 m/s
For carbon di oxide:
M = 44 g = 0.044 kg
![v_{rms}=\sqrt{\frac{3\times 8.314\times 373}{0.044}}](https://tex.z-dn.net/?f=v_%7Brms%7D%3D%5Csqrt%7B%5Cfrac%7B3%5Ctimes%208.314%5Ctimes%20373%7D%7B0.044%7D%7D)
vrms = 459.83 m/s
For hydrogen:
M = 2 g = 0.002 kg
![v_{rms}=\sqrt{\frac{3\times 8.314\times 373}{0.002}}](https://tex.z-dn.net/?f=v_%7Brms%7D%3D%5Csqrt%7B%5Cfrac%7B3%5Ctimes%208.314%5Ctimes%20373%7D%7B0.002%7D%7D)
vrms = 2156.78 m/s
Rock types: Igneous, metamorphic, sedimentary
<span>Plate tectonics, mohorovic discontinuity, continental drift. </span>
<span>orogony: mountain building </span>
<span>earthquakes, faults, fault types, contact zones </span>
<span>subduction zones</span>
Answer:
A body accelerates only when there is change in its magnitude or direction . and here
even if the magnitude is not changing ( remains constant ) the direction changes , hence the car is accelerating.
and since the car turns it's direction keep changing.