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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKinetic Theory of Gases and Gas LawsMedium2 minQB

PhysicsMediumsingle choice

The weight of a person is 60 kg. If he gets $1 0^{5}$ calories of heat through food and the efficiency of his body is 28%, up to how much height can he climb? Take $g = 10$ m $s^{- 2}$ and 1 cal = 4.2 J.

Options:

Answer:

Solution:

Useful energy =

$0.28 \times 1 0^{5} \times 4.2 = 1.176 \times 1 0^{5}$ J. Height =

$\frac{1.176 \times 1 0 ^{5}}{600} = 196$ m. B.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Kinetic Theory of Gases and Gas Laws

⏱ 2mℹ️ Source: QB

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