Un gas está confinado por un pistón en un cilindro con un diámetro de 0.57 m; sobre el pistón se pone un peso. La
masa del pistón y el peso es de 160 kg. La gravedad es
de 9.817 m/s2 y la presión atmosférica es de 101.79 kPa.
a) ¿cuál es la fuerza en newtons ejercida sobre el gas
por la atmosfera, el pistón y el peso, suponiendo
que no hay fricción entre el cilindro y el pistón?
b) ¿Cuál es la presión del gas en kPa?

Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?