Air_at_20_degree_Celsius_flows_over_a_flat_surface_maintained_at_80_degree_Celsius._The_local_heat_flow_at_a_point_was_measured_as_1250_W/m2_.Take_thermal_conductivity_of_air_as_0.028_W/m_K,_calculate_the_temperature_at_a_distance_0.5_mm_from_the_surface$

Air_at_20_degree_Celsius_flows_over_a_flat_surface_maintained_at_80_de

1.	Air_at_20_degree_Celsius_flows_over_a_flat_surface_maintained_at_80_degree_Celsius._The_local_heat_flow_at_a_point_was_measured_as_1250_W/m²_.Take_thermal_conductivity_of_air_as_0.028_W/m_K,_calculate_the_temperature_at_a_distance_0.5_mm_from_the_surface$
A.	57.682 degree celsius
B.	67.682 degree celsius
C.	77.682 degree celsius
D.	87.682 degree celsius
Answer» B. 67.682 degree celsius

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Air_at_20_degree_Celsius_flows_over_a_flat_surface_maintained_at_80_degree_Celsius._The_local_heat_flow_at_a_point_was_measured_as_1250_W/m²_.Take_thermal_conductivity_of_air_as_0.028_W/m_K,_calculate_the_temperature_at_a_distance_0.5_mm_from_the_surface$