Which action is an example of how engineering affects science. A) Identifying ways to improve the design of an infrared camera.
B) Designing an infrared camera that can record animal behavior in darkness.
C) Using observations of predators to from a hypothesis about their behavior.
D) Testing the effect if infrared light on the behaviors of nighttime predators.

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater