Question 2. [20 marks Figure 1 displays the response to shear stress over a solid and over a fluid, a) [7.5 marks/explanation] Explain the difference between the behaviors illustrated on Figure 1 and indicate which behavior (illustrated on Figure 1A or 1B) corresponds to the response of a solid. b) (5 marks] What is the significance of "B" on both Figures 1A and B. If shear stress has been removed, what happens to B for the case of a liquid (Figure 1A)? A B'=B F B B'>B B B F F Figure 1: Response to shear stress over a fluid and over a solid. Question 3. [10 marks The interior dimensions of a room, filled with air, are shown on Figure 2. The density of air is given to be equal to 1.16 kg m". Determine the missing dimension of the room if the weight of air is 1195 N. Then, calculate the weight of air in the room. Room air 3x5x?m Figure 2: Illustration of a room filled with air A balloon is filled with H, gas (Figure 3). At the specified conditions, He behaves as an ideal gas. Take the molecular weight of He to be 2.006 kg kmol and consider that the balloon is a sphere. Determine: a) [10 marks] The number of moles of Hy in the balloon. b) [10 marks] The mass of H2 in that balloon and its specific volume. H, D = 9 m 25 C 250 kPa Figure 3: Illustration of a balloon filled with Higas