Class 11Physics10-1.Thermometry, Thermal Expansion and CalorimetryMix Examples-Thermometry, Thermal Expansion and Calorimetry
MediumWhat are freezing and freezing point?
(N/A) Freezing is the phase transition process in which a substance changes from a liquid state to a solid state. This occurs when the thermal energy of the molecules decreases,causing them to lose their mobility and arrange themselves into a fixed,ordered structure.
The freezing point is the specific temperature at which a liquid turns into a solid at a given pressure. At this temperature,the liquid and solid phases of the substance exist in thermal equilibrium. For pure water at standard atmospheric pressure $(1.013 \times 10^5 \ Pa)$,the freezing point is $0 \ ^\circ C$ or $273.15 \ K$.
The freezing point is the specific temperature at which a liquid turns into a solid at a given pressure. At this temperature,the liquid and solid phases of the substance exist in thermal equilibrium. For pure water at standard atmospheric pressure $(1.013 \times 10^5 \ Pa)$,the freezing point is $0 \ ^\circ C$ or $273.15 \ K$.
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$A$ steel ball of mass $200 \,g$ falls freely from a height of $20 \,m$ and bounces to a height of $10.8 \,m$ from the ground. If the energy lost in this process is absorbed by the ball, the rise in its temperature is ($g = 10 \,ms^{-2}$, specific heat capacity of steel is $460 \,Jkg^{-1} K^{-1}$). (in $^{\circ} C$)
$A$ cube is subjected to a pressure $P$ on all its faces at a temperature of $0 \, ^\circ C$. By what temperature should the cube be heated so that it regains its original volume? Let the bulk modulus of the cube be $\beta$ and the coefficient of volume expansion be $\alpha$.
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View SolutionIt is known that wax contracts on solidification. If molten wax is taken in a large vessel and it is allowed to cool slowly,then
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View Solution$A$ $100 \, g$ of iron nail is hit by a $1.5 \, kg$ hammer striking at a velocity of $60 \, ms^{-1}$. What will be the rise in the temperature of the nail in $^{\circ}C$ if one-fourth of the energy of the hammer goes into heating the nail? [Specific heat capacity of iron $= 0.42 \, Jg^{-1} {}^{\circ}C^{-1}$]
An iron rod of heat capacity $C$ is heated to temperature $8T_0$. It is then put in a cylindrical vessel of adiabatic walls having two moles of air which can be treated as a diatomic ideal gas at temperature $T_0$ and closed by a movable piston which is also adiabatic. The atmospheric pressure is $P_0$. The cylinder with the piston combined have a heat capacity $2C$. Find the equilibrium temperature. (Assume the temperature of air to be uniform and equal to the vessel at all times).
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