Question

Please show work

2. What is the wind speed for 150 miles per hour (mph) expressed in m/s? Show your work. er 3. Figure out the SI unit of the fluid viscosity u by using the equation τ=μ-u and the fluid kinematic viscosity vt 2 dy

Answer 1

2. As we know, 2.237 mi/hr = 1m/s

So, 150 mi/hr = 150 / 2.237 m/s = 67.056 m/s

or 150 mi/hr * (m/s) / (2.237 mi/hr) = 67.056 m/s

3. As we know, $\tau$ = $\mu$ dU /dy

Where $\tau$ is the stear stress = Force/ Area = Force / (Length)²

and dU / dy = Change of velocity / change of distance = (length/ time) *(1/length) = 1/time

Now, $\mu$ = $\tau$ * ( dy/ dU) = (Force / (Length)²) / (1/time) = Force * time / (Length)² = N.s/m²

Again, $\nu$ = $\mu$ / $\rho$ = (N.s/m²) / kg/m³ = ( kg/m.s) / ( kg/m³) = m²/s