In a particular application involving airflow over a heated surface, the boundary layer temperature distribution, t(y), may be approximated as:

[ t(y) - ts / t[infinity] - ts ] = 1 - e^( -pr (u[infinity]y / v) )

where y is the distance normal to the surface and the prandtl number, pr = cpu/k = 0.7, is a dimensionless fluid property.

a.) if t[infinity] = 380 k, ts = 320 k, and u[infinity]/v = 3600 m-1, what is the surface heat flux? is this into or out of the wall? (~-5000 w/m2 ,

b.) plot the temperature distribution for y = 0 to y = 0.002 m. set the axes ranges from 380 to 320 for temperature and from 0 to 0.002 m for y. be sure to evaluate properties at the film temperature.

answer: he got 23

explanation:

see earlier

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

pretty sure it's false