A centrifugal pump impeller is rotating at 1200 rpm in thedirection shown in Fig. P12.9. The flow enters parallel to the axisof rotation and leaves at an angle of 30 to the radial direction. Theabsolute exit velocity, V2, is 90 ft/s. (a) Draw the velocity trianglefor the impeller exit flow. (b) Estimate the torque necessary to turnthe impeller if the fluid is water. What will the impeller rotationspeed become if the shaft breaks?
Biology lecture notes week 2 Lecture 4. Mon. 2517 Why be eukaryotic A closed membrane bilayer system (like a plasma membrane) provides a reaction vessel with a small volume Eukaryotic cells contain organelles: Nucleus Endoplasmic reticulum (ER) Golgi Lysosomes Mitochondria, chloroplasts Some others… “Two Worlds in a Cell” I. Polar, aqueous, hydrophilic. Water soluble compounds found here. Some examples: Cytoplasm and nucleoplasm. Matrix of mitochondria. Lumen of ER, golgi or lysosomes II. Non Polar, lipidlike, hydrophobic. Less soluble compounds seen here. Example: membranes In Between: Amphipathic: Amphipathic means “two natures”. One end is polar and the other end is nonpolar (but seldom 5050). One end
