Answer: Heat transfer (Q) is 521 kJ.
Explanation: In the piston-cilinder assembly, we can suppose that the oxygen act as an ideal gas, so, it can be used the General Gas Equation:
PV=
RT, where:
P is pressure;
V is volume;
m is mass;
M is molar mass;
R is a constant: R = 8.314.
m³bar.K⁻¹.mol⁻¹;
T is temperature;
Using this equation, find the intial temperature:
PV = RT
1.2 = 
.8.314..T
T = 1.924.
K
To determine the final temperature, use Combined Gas Law:
= 
, in which, the left side of the equality is related to the initial values and the right side, to the final values.
As pressure is constant:
T = 
T = 
T = 3.85. K
With the temperatures, calculate the heat transfer of the process:
Q = m.k.ΔT, where:
k is heat constant
ΔT = T - 
Q = m.k.ΔT
Q = 2.1.35.(3.85 - 1.92).
Q = 521 kJ
The heat transfer in the process is 521 kJ.
Answer:
The solution code is written in Python 3.
- carYear = 1995
- if(carYear < 1967):
- print("Probably has few safety features.\n")
- if(carYear > 1970):
- print("Probably has head rests. \n")
- if(carYear > 1991):
- print("Probably has electronic stability control.\n")
- if(carYear > 2002):
- print("Probably has airbags. \n")
Explanation:
Firstly, create a variable, <em>carYear</em> to hold the value of year of the car make. (Line 1)
Next, create multiple if statements as required by the question (Line 3-13). The operator "<" denotes "smaller" and therefore <em>carYear < 1967</em> means any year before 1967. On another hand, the operator ">" denotes "bigger" and therefore <em>carYear > 1970 </em>means any year after 1970.
The print statement in each of the if statements is done using the Python built-in function <em>print()</em>. The "\n" is an escape sequence that create a new line at the end of each printed phrase.
Answer:
interpersonal.
Explanation:
Out of all the activities performed by Michelle, three activities involves the interpersonal skills.
1. Meeting with city officials
2. Meeting with section managers
3. Handling the complaint filed by an employee
All these activities involves interpersonal skills. Hence, we can say that she had spent her most of the day by using the interpersonal skills.
Avoid them because they can cause you to lose traction.
