417_Physics ProblemsTechnical Physics

417_Physics ProblemsTechnical Physics - Chapter 14 *P14.21...

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Chapter 14 419 *P14.21 (a) PP g h =+ 0 ρ The gauge pressure is PP g h −= = = = × × F H G I K J = 0 3 1 000 0 160 1 57 1 57 10 1 00155 kg 9.8 m s m kPa Pa atm 1.013 10 Pa atm 2 5 ej a f ... .. It would lift a mercury column to height h g = == 0 1568 98 11 8 Pa 13 600 kg m m s mm 32 e j . . . (b) Increased pressure of the cerebrospinal fluid will raise the level of the fluid in the spinal tap. (c) Blockage of the fluid within the spinal column or between the skull and the spinal column would prevent the fluid level from rising. Section 14.4 Buoyant Forces and Archimede’s Principle P14.22 (a) The balloon is nearly in equilibrium: Fm a BF F yy g g =⇒ = helium payload 0 or ρρ air helium payload gV gV m g −− = 0 This reduces to mV m payload air helium 33 3 payload kg m kg m m kg =− = = bg e j 129 0179 400 444 (b) Similarly, m payload air hydrogen 3 payload kg m kg m m kg = = e j
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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