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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferHard2 min

PhysicsHardnumerical

A 40 cm copper rod ( $k = 400$ W m⁻¹ K⁻¹) is insulated on its sides, with one end in ice and the other in steam. A 2 mm layer of water ( $k = 0.6$ ) lies at each end. Find the temperature gradient in the rod, in °C/m.

Answer:

32.60

Solution:

$R = \frac{2 \times 2 \times 1 0 ^{- 3}}{0.6} + \frac{0.4}{400} = 7.667 \times 1 0^{- 3}$ . $q = \frac{100}{R} = 13043$ W/m². Gradient = $\frac{q}{400} = 32.6$ °C/m.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

⏱ 2m

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