Determine the required height h of the roller coaster so that when it is essentially at rest at the crest of the hill a it will reach a speed of 100 km/h when it comes to the bottom b. also, what should be the minimum radius of curvature rho for the track at b so that the passengers do not experience a normal force greater than 4mg=(39.24m)n? neglect the size of the car and passenger.

The higher the astm grain size number, the finer the gran is. a)-true b)-false

The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor