Laminar flow normally persists on a smooth flat plate until a critical reynolds number value is reached. however, the flow can be tripped to a turbulent state by adding roughness to the leading edge of the plate. for a particularsituation, experimental results show that the local heat transfer coefficients for laminar and turbulent conditions are: hlam(x)= 1.74w/m^1.5. kx^-0.5hturb(x)= 3.98w/m^1.98. kx^-0.2 calculate the average heat transfer coefficients for laminar and turbulent conditions for plates of length l = 0.1 m and 1 m.