The ice on a pond is 10 cm thick with its top surface at − 1 0 ∘ C and its bottom at 0 ∘ C. Find the heat flow per square metre in W m − 2 ( K i ce = 2.2 W m − 1 K − 1 ; whole number).

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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediuminteger

The ice on a pond is 10 cm thick with its top surface at $- 1 0^{\circ}$ C and its bottom at $0^{\circ}$ C. Find the heat flow per square metre in W $m^{- 2}$ ( $K_{i ce} = 2.2$ W $m^{- 1}$ $K^{- 1}$ ; whole number).

Answer:

220

Solution:

$\frac{Q}{A t} = \frac{K Δ T}{x} = \frac{2.2 \times 10}{0.10} = 220$ W $m^{- 2}$ . Thicker ice cuts this flow, so ice insulates the water below.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

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