an ideal gas is flowing in a constant diameter pipe at a constant temprature. what is the relation of average velocity to pressure

V = mRT /  (d²)PM

Therefore, pressure decreases as velocity increases.

This is a hypothetical concept as the friction which causes the velocity to increases also makes the pressure decrease.

Explanation:

Given the data in the question;

we know that an ideal gas equation is;

= PM/RT --------------- let this be equation 1

P is pressure, M is molecular weight, R is universal gas constant and T is the absolute temperature.

The volumetric flow rate from the continuity equation is;

Q = AV

and A =  d²

so, Q = (d²)V ---------let this be equation 2

Expression for mass m in flowrate is;

m = Q ------------------let this be equation 3

so, m = (d²)V × PM/RT

solve for V

V = mRT /  (d²)PM

Therefore, pressure decreases as velocity increases.

This is a hypothetical concept as the friction which causes the velocity to increases also makes the pressure decrease.

electromagnetic waves travel through space with vacuums. give me brainliest if right.

b) phosphorus pentoxide