Para rescatar a un niño de 22.9 kg en un incendio, un bombero se ajusta una bolsa de herramientas junto con su casco y sale por una ventana que se encuentra en el piso 16. El bombero de 71.7 kg, usando una soga, desciende
con rapidez constante, se detiene a los 12 m del suelo y se le cae la bolsa de herramientas de 0.6 kg. Continúa el
descenso y a los 10 m del suelo, al sujetar al niño, se le cae el casco de 0.2 kg.
¿En qué tiempo la bolsa de herramientas llega al suelo?
Considera que g es de 9.8 m/s2

Seleccione una:
1.56 s
15.3 s
1.43 s
2.45 s

Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples