Old-time fire engines sometimes relied on steam power to direct the water to the desired target. in effect, a steam heated boiler was used to supply pressurized water (at 8 bar absolute) to a hose, which was then used to direct water to the base of the flames.1) estimate the height the water can reach. report your answer in m. 2) would this height remain constant during the boiling process? justify your answer with a one-paragraph physical explanation. 3) would the height of water inside the boiler have much of an impact on your answers to the two previous questions? provide quantitative support for your answers.

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false