Car bodies require a metal that does not scratch or wear easily. Therefore, the metal must possess high a)strength
b)malleability
c)hardness
d)toughness​

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.

When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?