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Q. Suppose that in an examination of a spinal injury it is found that the spinal fluid (with about the same density as water) will rise a vertical height of 13cm in an open tube. What pressure does this correspond to, expressed in mm of mercury and in atmospheres?

Q. An electronic device dissipating 30 W has a mass of 20 g and a specific heat of 850 J/kgoC. The device is lightly used, and it is on for 5 min and then off for several hours, during which it cools to the ambient temperature of 25^oC.

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