Steam enters a well-insulated turbine operating at steady state at 4mpa with a specific enthalpy of 3015.4 kj/kg and a velocity of 10 m/s. the steam expands to the turbine exit where the pressure is 0.07 mpa, specific enthalpy is 2431.7 kj/kg, and the velocity is 90 m/s. the mass flow rate is 11.95 kg/s. neglecting potential energy effects, determine the power developed by the turbine, in kw.

Galileo was the first to notice that the moon has craters, valleys, and mountains. how might this have changed people's perception of the moon at the time?

2. -/1 pointsserpse10 2.7.p.017.mi. an object moving with uniform acceleration has a velocity of 14.0 cm/s in the positive x direction when its x coordinate is 2.97 cm. if its x coordinate 2.85 s later is -5.00 cm, what is its acceleration? cm/s2 need ? read it master it

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.