(II) Un avión viaja 3100 km a una rapidez de 720 km/h y luego encuentra un viento en cola que incrementa su rapidez a 990
km/h durante los siguientes 2800 km. ¿Cuál fue el tiempo total
del viaje? ¿Cuál fue la rapidez promedio del avión durante el
viaje? [Sugerencia: ¿Se aplica la ecuación 2-12d, o no?].

Drag each tile to the correct box. tiles bra i sequence

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.