Component and centrfugal force: A - 15 000 xg B - 1000 xg C - 400 xg D - 2500 xg Two centrifuge are available. Centrifuge 1 has r= 7cm and a maximum speed of 3500 rpm centrifuge 2 has a r= 9cm and a max speed of 14500 rpm. Construct a separation scheme of the four components: 1. using only two centrifugation steps   2. four components are separated into supernatant 1, supernatant 2, pellet 1, and pellet 2. 3. the two centrifuge machine must be used in the procedur

1. A building exhaust fan for a large commercial bullding weighs 180 pounds and operates at a speed of 600 rpm. Due to manufacturing tolerances, it may have a rotating imbalance. It is desired to limit force transmissibility to 2.5 as the fan passes through resonance during startup and wind-down. In addition, an Isolation of 90% is required at the operating speed of the fan. The fan's framework will be supported from the floor at 4 corners. Design, select, and specify vibration isolators at the four corners. It is acceptable to assume the center of gravity is symmetrical with respect to all four corners, enabling you to treat this as a single DOF system without pitch or yaw.

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There is a position tolerance applied to a four hole pattern and another position tolerance to a single hole. Calculate the diameter of a pinused as the secondary datum feature B simulator for these position tolerance.