¿cual es la aceleración de un proyectil que se desprende de un misil proximo a la superficie de la tierra que esta acelerando verticalmente hacia arriba a 9.8 m/s2.

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)

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical