Water at 15oC flows with a Reynolds number of 1500 in 12.5 cm diameter, horizontal pipe. Calculateflow rate, the wall shear stress, and the pressure drop over 3m length of the pipe and the velocity at y =5mm

Phase changes are chemical changes. true or false

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight