Aride in an amusement park consists of a rotating arm ab having a constant angular velocity omega ab = 2 rad/s about point a and a car mounted at the end of the arm which has a constant angular velocity omega' = {-0.5 k} rad/s, measured relative to the arm. at the instant shown, determine the velocity and acceleration of the passenger at c.

Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]

The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false