Problem 1 (20 Marks): A hair dryer is basically a duct of constant diameter in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it through the resistors where it is heated. If the density of air is 1.20 kg/m' at the inlet and 1.05 kg/m' at the exit, determine the percent increase in the velocity of air as it flows through the dryer 1.05 kg/m 1.20 kg/m Solution: Your solution steps: (10 Marks) Step 1: Assumptions Step 2: Properties Step 3: Solution Your Answer: (10 Marks) % increase: .......(inset your answer here) (10 Marks)