Answer:
3.
Explanation:
We start calcualting the factor for heavy-vehicle, that is,

for rolling terrain, so, replacing,


We calculate the number of lanes by using the relation as follow:



In this way the necessary number of lanes is 3.
Note: To calculate
you need to consult the Exhibit 23-2
in 'Highway capacity Manual' for 55mph and the LOS D criteria.
Answer:
The answer is "83.98, 1889.195, and 1889.195"
Explanation:
Given value:

In point a:
The value of 

In point b:
calculating heat leaves formula= 

In point c:
calculating Heat transfer rate formula

Answer:
Final length of the rod = 13.90 in
Explanation:
Cross Sectional Area of the polythene rod, A = 0.04 in²
Original length of the polythene rod, l = 10 inches
Tensile modulus for the polymer, E = 25,000 psi
Viscosity, 
Weight = 358 lbs - f
time, t = 1 hr = 3600 sec
Stress is given by:

Based on Maxwell's equation, the strain is given by:

Strain = Extension/(original Length)
0.39022 = Extension/10
Extension = 0.39022 * 10
Extension = 3.9022 in
Extension = Final length - Original length
3.9022 = Final length - 10
Final length = 10 + 3.9022
Final length = 13.9022 in
Final length = 13.90 in