Answer:
It is because constraints applied automatic by the software (CAD) are supposed to control relationships and geometry between lines, arcs and circles while those manually added are supposed to control the geometry to behave in the manner the user likes the sketch to appear when drawing.
Explanation:
CAD software enables creating sketches using the program by automatic allowing geometric constraints to perform the tasks.Geometry in lines, circles, and other geometric features show collaborating relation that facilitate sketching in the program.For example, two end points appear to make lines remain perpendicular.Other geometric constraints are parallel, and equal.However, the user can manually apply geometric constraints to a sketch to force the geometry in a manner that is suitable to the sketch drawn.That is why a user must manually apply others.
Answer:
n R ln(Vf/Vi)
Explanation:
Entropy is the loss of energy available to do work. Entropy is a state function (i.e. it depends only upon the current state of the system and is independent of how that state was prepared).
Since the temperature change of the ideal is constant, hence this is an isothermal expansion of a perfect gas. The change in entropy (ΔS) for an isothermal expansion of a perfect gas is given by:
Where n is the amount of gas molecules in mol and R is the gas constant in JK⁻¹mol⁻¹given by R = k, k is Boltzmann's constant in J K⁻¹ and Avogadro's constant in mol⁻¹. Vf is the final volume and Vi the initial volume.
Answer:
<em>Written in Python</em>
def SumN(n):
total = 0
for i in range(1,n+1):
total = total + i
print("Total: ",total)
def SumNCubes(n):
total = 0
for i in range(1,n+1):
total = total + i**3
print("Cube: ",total)
n = int(input("User Input: "))
if n > 0:
SumN(n)
SumNCubes(n)
Explanation:
The SumN function is defined here
def SumN(n):
This line initializes the total to 0
total = 0
The following iteration compute the required sum
<em> for i in range(1,n+1):
</em>
<em> total = total + i
</em>
This line outputs the calculated sum
print("Total: ",total)
The SumNCubes function is defined here
def SumNCubes(n):
This line initializes the total to 0
total = 0
The following iteration compute the required sum of cubes
<em> for i in range(1,n+1):
</em>
<em> total = total + i**3
</em>
This line outputs the calculated sum of cubes
print("Cube: ",total)
The main starts here; The first line prompts user for input
n = int(input("User Input: "))
The next line checks if input is greater than 0; If yes, the two defined functions are called
if n > 0:
SumN(n)
SumNCubes(n)
Answer:
a) the aerodynamic force is 1.083x10⁴N
b) If the CL factor changes, the response also changes, since the aerodynamic force is dependent on said factor
Explanation:
Given data:
v=20m/s
Apole=20*0.12=2.4m²
Aflag=2*2.5=5m²
The total area is:
Atotal=2.4+5=7.4m²
The properties of the air at 30°C are:
v=1.6036x10⁻⁵m²/s
ρ=1.1649kg/m³
a) First, we need to calculate the coefficient of lift:
Here, θ=90°, thus, the expression is:
The mathematical expression to calculate the aerodynamic force is:
b) If the CL factor changes, the response also changes, since the aerodynamic force is dependent on said factor