Air at 200 c blows over a 50 cm x 75 cm plain carbon steel (aisi 1010) hot plate with a constant surface temperature of 2500c. the convection heat transfer coefficient is 25 w/m2k. assume that 300 w is lost from the surface by radiation. calculate the inside plate temperature

Humidity is to blame for that muggy, steamy feeling you experience on some hot summer days. what gas in the atmosphere causes humidity? a) oxygen b) hydrogen c) nitrogen d) water vapor

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above

The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.