Question 1: A family goes on holiday in a car and decide to visit NASA to stop the journey beingboring for the Sam and his sister Annlo every half an hour they note down thedistance they have
travelled since they left home. They then plot the graph shown in Fig. 1.1.

Ahair dryer is basically a duct 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. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.