Answer:
a) 
b) 
c) Q = 1.256 × 10⁻³ m³/s
Explanation:
Given:
The velocity profile as:
Now, the maximum velocity of the flow is obtained at the center of the pipe
i.e r = 0
thus,
or
Now,
or
or
Now, the flow rate is given as:
Q = Area of cross-section of pipe × 
or
Q = 
or
Q = 
or
Q = 1.256 × 10⁻³ m³/s
So base on your question about the moving air and its is cycled in order to reach equilibrium the answer of the questions are the following
A. what are the two major characteristic that change when air is heated and cooled?
-temperature and molecular structure/ phase of the matter
<span>B. how does these characteristics change the movement of air?
</span>-if the air has lower temp the possibility that it will become heavier than with the higher
<span>C. what is the name of the cycle that develop during these changes? Air cycle</span>
<span>D. why do the changes you describe in part B provide an example of a cycle? because of its molecular activity will increase</span>
Answer:
60.4 J
Explanation:
The work done by the gas is given by:
where
p is the gas pressure
is the final volume of the gas
is the initial volume
We must convert all the quantities into SI units:
So the work done is
Answer:
option c
Explanation:
K.E=1/2mv(squared)
K.E=1/2x900x80x80
K.E=450x6400=2880000J
convert to KJ=2880000/1000=2880KJ
