Answer:
527
Explanation:
Data provided in the question:
Number of crashes per year at the intersection = 13
The 4 legs of the intersection had 2-way ADT values :
9671, 2893, 9506 and 2611 vehicles last year.
Now,
ADT = 9671 + 2893 + 9506 + 2611
= 24,681 vehicles
Rate per Million Entering Vehicles, (RMEV )
= [ ( crashes per year ) ÷ ( Approach ADT per year ) ] × 10⁶
or
RMEV = [ ( 13 ) ÷ (24,681) ] × 10⁶3
or
RMEV = 526.721 ≈ 527
In a morphological matrix, the parameters that are essential for a design are in the left column.
<h3>What is a morphological matrix?</h3>
The morphological matrix is a matrix where columns and rows represent the various parameters for solving a problem. The first column is used for the characteristics relevant to the problem; the horizontal lines are filled with possibilities for each of these parameters.
With this information, we can conclude that in a morphological matrix, the parameters that are essential for a project are in the left column.
Learn more about morphological matrix in brainly.com/question/21120930
Answer:
a) Mechanical efficiency (
)=63.15% b) Temperature rise= 0.028ºC
Explanation:
For the item a) you have to define the mechanical power introduced (Wmec) to the system and the power transferred to the water (Pw).
The power input (electric motor) is equal to the motor power multiplied by the efficiency. Thus, 
.
Then, the power transferred (Pw) to the fluid is equal to the flow rate (Q) multiplied by the pressure jump 
. So 
.
The efficiency is defined as the ratio between the output energy and the input energy. Then, the mechanical efficiency is 
For the b) item you have to consider that the inefficiency goes to the fluid as heat. So it is necessary to use the equation of the heat capacity but in a "flux" way. Calling <em>H</em> to the heat transfered to the fluid, the specif heat of the water and 
the density of the water:
![[tex]H=(5.7-3.6) kW=\rho*Q*c*\Delta T=1000kg/m^3*0.018m^3/s*4186J/(kg \ºC)*\Delta T](https://tex.z-dn.net/?f=%5Btex%5DH%3D%285.7-3.6%29%20kW%3D%5Crho%2AQ%2Ac%2A%5CDelta%20T%3D1000kg%2Fm%5E3%2A0.018m%5E3%2Fs%2A4186J%2F%28kg%20%5C%C2%BAC%29%2A%5CDelta%20T)
[/tex]
Finally, the temperature rise is:
