En un depósito de gran capacidad, lleno de
agua, se tiene un orificio situado a 8 m por
debajo de la superficie libre del líquido.
Sabiendo que en dicha superficie se ejerce
una presión de 208 kPa, determinar la
velocidad, en m/s, del chorro de agua que
sale por el orificio. (2g m s = 10 /).
a) 8
b) 12
c) 16
d) 24
e) 20

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

Diverging mirrors and lenses always produce images

Aperson touches a large chunk of ice with their hand and remarks, “this is making me cold.” explain what this person is feeling. is the ice transferring “cold” to the person? is there a heat transfer occurring? explain.