Answer:
a) D = 4.88 * 10^(-14) m^2 / s
b) <em>t </em>= 1.1 hr
Solution:
a) Magnesium in Aluminum diffusion:
D = Do * exp(-Qd / RT)
= (1.2 * 10^(-4) m^2 / s) * exp ( - 130,000 / 8.31 * 723.15)
= 4.88 * 10^(-14) m^2 / s
D = 4.88 * 10^(-14) m^2 / s
b) The composition remains same at say the distance Xo:
(Cx - Co) / (Cs - Co) = Constant
Xo^2 / D_{550} * <em>t </em>= Xo^2 / D_{450} * 15
D_{550} * <em>t </em>= D_{450} * 15
(1.2 * 10^(-4) m^2 / s) * exp ( - 130,000 / 8.31 * 723.15) * <em>t</em>
(4.88 * 10^(-14) m^2 / s) * 15
by, solving for <em>t </em>we get:
<em>t </em>= 1.1 hr
So, the time required is 1.1 hr.
Answer:
Jack has to be very calm and try his best to present himself in an outward way and think about the fact that by the end of the night no one will remember that he messed up, I feel like he'll be okay :)
Here are some important points:
- we use it to do essays for school
- we can use it to do flyers for recreational events
- we can use it to do pamphlets to inform people
- it is versatile, so you can create many different types of documents
- you can create charts
This can be your opening statement
Today, there is a lot asked of a child in school. From charts to essay to projects, the average kid has at least 10 different programs they use just for one project. But there is one program that came along and changed everything, and that program is called Microsoft word. Microsoft word is valuable because it is versatile (what I wrote earlier about it being able to do many different tasks), it simplifies your experience (what i said about it being able to combine different programs into one), and it is free (you can write about how some programs charge to use their high-grade programs but microsoft is free and avaialabe on every windows
computer.)
GOOD LUCK !
A technician need to use the form factor or the technician be looking for what we call EPS12V.
<h3>What is an EPS power connector?</h3>
The EPS connector is known to be used to supply power to the motherboard CPU socket and the PCI is known to be one that functions to express connector.
Note that this is said to be a server standard (EPS12V) and it is also known to be one that can be said to be a desktop standard (ATX12V).
Note that the EPS12V is one that is known to always be seen in an 8-pin CPU connector and therefore, A technician need to use the form factor or the technician be looking for what we call EPS12V.
Learn more about technician from
brainly.com/question/2328085
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