Answer:

Explanation:
Let consider that velocity profile inside the circular pipe is:

The average speed at
is:


The velocity at the center of the pipe is:


Answer:
Heater power = 425 watts
Explanation:
Detailed explanation and calculation is shown in the image below
Answer:
Output voltage equation is 
Explanation:
Given:
dc gain
dB
Input signal 
Now convert gain,

DC gain at frequency
is given by,



At zero frequency above equation is written as,


Now we write output voltage as input voltage,

Therefore, output voltage equation is 
Answer:
KAT
Explanation:
I believe this is what ur looking for