A una presión de 2 atm un gas ocupa 40 L. Luego, isotérmicamente, su volumen se reduce a 16 L. Finalmente, se efectúa un proceso isocórico en el que su presión aumenta a 3 atm y su temperatura final es de 127°C. ¿Cuál esla temperatura inicial del gas? Utilizar la fórmula de la ley combinada de los gases.

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

The mini-refrigerator fire was most likely caused by what type of wiring?

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)