Answer:
Considering the plain view doctrine, which is an exception to the warrant requirement of the Fourth Amendment, is applied by law enforcement officers and courts who can seize evidence of a crime without a warrant, if the officer observes the evidence in plain view.
Explanation:
For any digital information related to a murder case that has been seized under the plain view doctrine to be used to convict you of a crime, has to comply with three conditions:
1. The digital evidence must be in out in the open, and easily observable by the officer, this is what "plain view" refers to.
2. The officer must have a legal right to be where he got the information related to the case.
3. The 'incriminating' character of the information must be a clear hint of the murder to fall under the plain view doctrine and the officer´s experience will help him determining whether the information is evidence or not, upon probable cause related to a crime.
Answer:
Explanation:
The pressures given are relative
p1 = 2000 psi
P1 = 2014 psi = 13.9 MPa
p2 = 4 psi
P2 = 18.6 psi = 128 kPa
Values are taken from the steam pressure-enthalpy diagram
h2 = 2500 kJ/kg
If the output of the turbine has a quality of 85%:
t2 = 106 C
I consider the expansion in the turbine to adiabatic and reversible, therefore, isentropic
s1 = s2 = 6.4 kJ/(kg K)
h1 = 3500 kJ/kg
t2 = 550 C
The work in the turbine is of
w = h1 - h2 = 3500 - 2500 = 1000 kJ/kg
The thermal efficiency of the cycle depends on the input heat.
η = w/q1
q1 is not a given, so it cannot be calculated.
Answer:
a) 149 kJ/mol, b) 6.11*10^-11 m^2/s ,c) 2.76*10^-16 m^2/s
Explanation:
Diffusion is governed by Arrhenius equation
![D = D_0e^{\frac{-Q_d}{RT} }](https://tex.z-dn.net/?f=D%20%3D%20D_0e%5E%7B%5Cfrac%7B-Q_d%7D%7BRT%7D%20%7D)
I will be using R in the equation instead of k_b as the problem asks for molar activation energy
I will be using
![R = 8.314\ J/mol*K](https://tex.z-dn.net/?f=R%20%3D%208.314%5C%20J%2Fmol%2AK)
and
°C + 273 = K
here, adjust your precision as neccessary
Since we got 2 difusion coefficients at 2 temperatures alredy, we can simply turn these into 2 linear equations to solve for a) and b) simply by taking logarithm
So:
![ln(6.69*10^{-17})=ln(D_0) -\frac{Q_d}{R*(1030+273)}](https://tex.z-dn.net/?f=ln%286.69%2A10%5E%7B-17%7D%29%3Dln%28D_0%29%20-%5Cfrac%7BQ_d%7D%7BR%2A%281030%2B273%29%7D)
and
![ln(6.56*10^{-16}) = ln(D_0) -\frac{Q_d}{R*(1290+273)}](https://tex.z-dn.net/?f=ln%286.56%2A10%5E%7B-16%7D%29%20%3D%20ln%28D_0%29%20-%5Cfrac%7BQ_d%7D%7BR%2A%281290%2B273%29%7D)
You might notice that these equations have the form of
![d=y-ax](https://tex.z-dn.net/?f=d%3Dy-ax)
You can solve this equation system easily using calculator, and you will eventually get
![D_0 =6.11*10^{-11}\ m^2/s\\ Q_d=1.49 *10^3\ J/mol](https://tex.z-dn.net/?f=D_0%20%3D6.11%2A10%5E%7B-11%7D%5C%20m%5E2%2Fs%5C%5C%20Q_d%3D1.49%20%2A10%5E3%5C%20J%2Fmol)
After you got those 2 parameters, the rest is easy, you can just plug them all including the given temperature of 1180°C into the Arrhenius equation
![6.11*10^{-11}e^{\frac{149\ 000}{8.143*(1180+273)}](https://tex.z-dn.net/?f=6.11%2A10%5E%7B-11%7De%5E%7B%5Cfrac%7B149%5C%20000%7D%7B8.143%2A%281180%2B273%29%7D)
And you should get D = 2.76*10^-16 m^/s as an answer for c)
Answer:
c) site preparation
Explanation:
A construction process can be defined as a series of important physical events (processes) that must be accomplished during the execution of a construction project.
Generally, in the construction of any physical asset such as offices, hospitals, schools, stadiums etc, the first step of the construction process is site preparation. Site preparation refers to processes such as clearing, blasting, levelling, landfilling, surveying, cutting, excavating and demolition of all unwanted objects on a piece of land, so as to make it ready for use.
This ultimately implies that, site preparation should be the first task to be accomplished in the construction process.
Hence, the construction process typically begins with site preparation before other activities such as the laying of foundation can be done.
Additionally, construction costs can be defined as the overall costs associated with the development of a built asset, project or property. The construction costs is classified into two (2) main categories and these are; capital and operational costs.
Answer:
Java is called portable because you can compile a java code which will spew out a byte-code, and then you run that code with Java Virtual Machine. Java Virtual Machine is like an interpreter, which reads the compiled byte-code and runs it. So first of all, you need to install the JVM on the system you want.
Explanation: