A 100 cm pipeline conveying crude oil will need to take a 60° turn from its right way to avoid a rock boulder. If the pressure intensity in the line is 12 bar and the flow rate is not more than 0.2 m3/s, estimate the forces that will be withstood by the concrete support to be provided at the bend. Density of crude oil is 800 kg/m3 while its viscosity is 0.95 Ns/m2.

What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?

For a process taking place in a closed system containing gas, the volume and pressure relationship is pvi-constant. -1.5 bar, the process starts with initial conditions, pi = =0.03 m3 and ends with final volume, v2-0.05 m3 determine the work done by the gas.

To save energy, the air supply to a 2000 ft office has been shut off overnight and the room temperature has dropped to 40°f. in the morning, the thermostat is reset to 70°f and warm air at 120 f begins to flov in at 200ft'/min. the air is well mixed within the room, and an equal mass flow of air at room temperature (changing with time) is withdrawn through a return duct. the air pressure is nearly 1 atm everywhere. ignoring heat transfer with the surroundings and kinetic and potential energy effects, estimate how long it takes for the room temperature to reach 70°f. plot the room temperature as a function of time.