A prototype fan has a 20-ft diameter, an inlet pressure of14.40 psia, an inlet temperature of 70 F, and a speed of 90 rpm. A110-scale model of the fan has the same inlet pressure and temperature, an inlet power of 1.24 hp, a flow rate of 220 ft3/min, and a speed of1800 rpm. Find the corresponding input power and flow rate of theprototype fan. Neglect Reynolds number effects.
Animal behavior notes A bird gets hit by a car and another bird stands by chirping The bird standing looks as if he is asking for help What’s the difference between objective and subjective Objective objects and any events that anyone can observe. It involves the absence of bias. Subjective observations feelings and experience that depend on one’s viewpoint and experiences A biological perspective Human intellect intuition and motives don’t really allow us to explain the actions of other individuals. First I clicker question C Video observations Each bird is flaunting their feathers The bird is cleaning up their area these are objective observations The bird is calling a female Second I clicker question B Bat Echolocation Bat has its eyes close and could successful hunt Bats had their nose plugged and they could successful hunt Bats had their ears plugged and couldn’t successfully hunt, it kept running into things Ultra sound new technology to listen to high pitched sounds The highest frequencies were loud and had short wave lengths Third I clicker question B Fourth I clicker question c How Why Proximate Untimate Genes development and internal mechanism Historical events patterns of selection over time that led to product
