Given:
Rivet diameter, 
= 1.872 cm
Hole diameter, 
= 1.870 cm
Temperature, 
= 22 °C
Formula Used:
where,
= coefficient of linear expansion
= change in diameter = 
= change in temperature = 
Solution:
we know that coefficient of linear expansion of steel, = 
Using the above formula :
= \frac{1.870 - 1.872}{1.872\times \T_{2} - T_{1}}[/tex]
= \frac{1.870 - 1.872}{12\times 10^{-6}}}[/tex]
Therefore, the rivet must be cooled to 
A mass extinction is the rapid decrease in something. so anytime that graph goes down drastically would be a mass extinction
Since metals are malleable they are able to be bent and shaped.
Ga, 31 electrons/ protons, 39 neutrons
Answer:
The relationship of pH and concentration of H+ ion is pH = -lg[H+]. So the concentration of H+ is 10^(-2). And [OH-][H+]=10^(-14). pOH + pH = 14. So the right answer is A.
