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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferHard2 min

PhysicsHardnumerical

A rod of area 2 $c m^{2}$ and length 50 cm has one end at $10 0^{\circ}$ C and the other in melting ice, which melts 0.5 g per second. Find the rate in g per second when the end temperature is $20 0^{\circ}$ C, the area 3 $c m^{2}$ and the length 60 cm (two decimals).

Answer:

1.25

Solution:

Rate $\propto \frac{A Δ T}{L}$ . New rate = $0.5 \times \frac{3}{2} \times \frac{200}{100} \times \frac{50}{60} = 1.25$ g $s^{- 1}$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

⏱ 2m

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