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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediuminteger

In rising from the bottom of a lake to the top, the temperature of an air bubble stays constant but its diameter triples. The barometric height at the surface is 0.75 m of mercury (relative density 13.6). Find the depth of the lake in metres (nearest integer).

Answer:

265

Solution:

Volume rises 27 times, so $P_{b o tt o m} = 27 P_{0}$ . Extra pressure $26 P_{0}$ , and $P_{0} = 0.75 \times 13.6 = 10.2$ m of water. Depth = $26 \times 10.2 = 265$ m.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermodynamics Laws & Specific Heats of Gases

⏱ 2mℹ️ Source: QB

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