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Assuming that the frequency γ of a vibrating string may depend upon i) applied force (F) ii) length (l) iii) mass per unit length (m), prove that ϒ ∝ `1/lsqrt(F/m)` using dimensional analysis.
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The efficiency of a heat engine working between the freezing point and boiling point of water is ____________.
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State Clausius form of the second law of thermodynamics.
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State Kelvin-Planck's statement of the second law of thermodynamics.
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Define heat engine.
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What are the processes involves in a Carnot engine?
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State the second law of thermodynamics in terms of entropy.
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Why does heat flow from a hot object to a cold object?
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Explain the heat engine and obtain its efficiency.
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Explain in detail the Carnot heat engine.
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Derive the expression for Carnot engine efficiency.
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Explain the second law of thermodynamics in terms of entropy.
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Suppose a person wants to increase the efficiency of the reversible heat engine that is operating between 100°C and 300°C. He had two ways to increase efficiency.
- By decreasing the cold reservoir temperature from 100°C to 50°C and keeping the hot reservoir temperature constant
- by increasing the temperature of the hot reservoir from 300°C to 350°C by keeping the cold reservoir temperature constant.
Which is the suitable method?
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A Carnot engine whose efficiency is 45% takes heat from a source maintained at a temperature of 327°C. To have an engine of efficiency of 60% what must be the intake temperature for the same exhaust (sink) temperature?
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For a given gas molecule at a fixed temperature, the area under the Maxwell-Boltzmann distribution curve is equal to ____________.
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Explain in detail the Maxwell Boltzmann distribution function.
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An object is dropped in an unknown planet from a height of 50 m, it reaches the ground in 2 s. The acceleration due to gravity in this unknown planet is ______
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What is the difference between velocity and average velocity?
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