The flow rate in a rough-concrete trapezoidal channel (n=0.022) with a 3.5 ft bottom width and side slope m=2 is 185 ft3/sec. the channel bed slope is 0.012. determine the uniform depth and critical depth for this given channel and flow rate conditions.

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false