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Q. A ceiling fan with 84cm diameter blades is turning at 61rpm. Assume the fan coasts to a stop 25 after being turned off. What is the speed of tip of a blade 10 s after the fan is turned off?

Q. A 4syringe has an inner diameter of 6, a needle inner diameter of 0.27, and a plunger pad diameter (where you place your finger) of 1.20. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. Suppose the liquid is an ideal fluid. What is the minimum force the nurse needs to apply to syringe?

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