In a particular application involving airflow over a heated surface, the boundary layer temperature distribution may be approximated as where y is the distance normal to the surface and the prandtl number, pr = cp/k = 0.7, is a dimensionless fluid property. if t=400k, ts = 300k, and u /ν = 5000 m-1 , what is the surface heat flux?

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?