The carotid artery (blood vessel) supplies blood to the brain, with a diameter and length of 8 mm and l.5 m, respectively. assume that for a normal person, about 3.6 ml of blood is pumped for every heartbeat, heart rate is 80 heartbeats/minute, the blood's specific gravity is 1.060 and its viscosity is 0.0027 kg/m. s. determine, (1) the reynolds number of blood flow through this healthy vessel. (ii) the friction factor (assume the blood vessel is smooth). (iii) the pressure drop across the vessel.

Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.