1. Heat transfer is thermal energy in transit due to a spatial difference. (2 points) 2....

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1. Heat transfer is thermal energy in transit due to a spatial difference. (2 points) 2. Write three types of heat transfer modes: (2 points) 3. The sun shines on a 150 m road surface so it is at 45. Below the 5 cm thick asphalt, average conductivity (k) of 0.06 W/m K, is a layer of compacted rubbles at a temperature of 15. Find the rate of heat transfer (q) to the rubbles. (see chapter 2.1). (3 points) 4. You drive a car on a winter day with the atmospheric air at -15 and you keep the outside front windshield surface temperature at +2 by blowing hot air on the inside surface. If the windshield is 0.5 m and the outside convection coefficient is 250 W/m K, find the rate of energy loss (q) through the front windshield. (hint: q=hA) (3 points) 1. Heat transfer is thermal energy in transit due to a spatial difference. (2 points) 2. Write three types of heat transfer modes: (2 points) 3. The sun shines on a 150 m road surface so it is at 45. Below the 5 cm thick asphalt, average conductivity (k) of 0.06 W/m K, is a layer of compacted rubbles at a temperature of 15. Find the rate of heat transfer (q) to the rubbles. (see chapter 2.1). (3 points) 4. You drive a car on a winter day with the atmospheric air at -15 and you keep the outside front windshield surface temperature at +2 by blowing hot air on the inside surface. If the windshield is 0.5 m and the outside convection coefficient is 250 W/m K, find the rate of energy loss (q) through the front windshield. (hint: q=hA) (3 points)