At a given location the airspeed is 22 m/s and the pressure gradient along the streamline is 105 N/m3. Estimate the airspeed at a point 0.5 m farther along the streamline. First write the equation for the pressure gradient along the streamline. If neglest gravity,

Answer

given,

Air speed, v = 20 m/s

Pressure gradient, = 105 N/m³

distance,dl = 0.5 m

density of air = 1.23 kg/m³

Airspeed at 0.5 m = ?

relation between pressure gradient and speed changed

neglecting the gravity

Speed of the air at 0.5 m

V = 20 - 2.13

V = 17.87 m/s

Hence, the speed of air is equal to V = 17.87 m/s

i don't know that i agree with that but what's the question ?

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg