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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediumsingle choice

The height of a waterfall is 84 m. Assuming that the entire kinetic energy of the falling water is converted into heat, the rise in temperature of the water will be ( $g = 10$ m $s^{- 2}$ , $J = 4.2$ J/cal):

Options:

Answer:

Solution:

Per kg: $g h = 840$ J, and $c = 4200$ J $k g^{- 1}$ $K^{- 1}$ . $Δ T = \frac{840}{4200} = 0.2^{\circ}$ C. A.

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

⏱ 2mℹ️ Source: QB

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