Recently Active Thermal Physics Questions

Calculate the increase in internal energy of 1 kg of water at 100 degrees Celsius when it is converted into steam at the same temperature and at 1atm. The density of water and steam are 1000kg/m3 and 0.6kg/m3 resp. The latent ...

When a block of iron floats in mercury at 0 degrees C, a fraction K1 of its volume is submerged while at the temperature of 60 degrees, a fraction K2 is seen to be submerged. If the coefficient of volume expansion of iron is ...

*Image* 1.We know that the formula for time period for a simple pendulum is 2pi√(l/g).While deriving the formula we say that Theta is small so sin Theta is aproximately =theta.Thus the formula is valid for small oscillation ...

Can anyone solve HC Verma 30 in Heat and Temperature? ...

1) At 0°C and 1atm pressure the densities of air, oxygen and nitrogen are 1.293, 1.429 and 1.251 kg/m3. Calculate the percentage of nitrogen in air, assuming these two gases to be present only. (it seems an easy one but stil ...

In Thermodynamics (physics) , work done by the system is taken positive but in Thermochemistry, work done by the system is negative (as per my book) Why are both the signs different? or is there any mistake in my book? ...

A gas is contained in a metallic cylinder fitted with a piston. The piston is suddenly moved in to compress the gas and is maintained at this position. As the time passes the pressure of the gas in the cylinder- a)Increases b ...

Any body knows how to derive the equation for radius of a bimetallic strip (on bending) ? ...

we are able to squeeze snow and make balls out of it due to some property........ which property is that????????? A.anomalous behaviour of water B.large latent heat of ice C.large specific heat of water D.low melting point of ...

In an arbitrary scale of temperature, water freezes at 40 and boils at 290. What is the boiling point of a liquid in this scale if it boils at 62 degrees celcius. What formula is used here? ...

How is difference in ionisation energy related to valency of d metal? ...

For an ideal gas, if the molar heat capacity varies as C = Cv + 3aT2 Find the equation of the process in terms of temperature T and volume V, where a is a constant. ...

Why do diatomic gases have 2 rotational degrees of freedom? If we consider the z-axis to be along the line joining their centres, the moment of inertia about x and y axes is same so kinetic energy along these axes is same (i. ...

1) A rod of length l with thermally insulated lateral surface consists of material whose heat conductivity Coefficient varies with temperature as k=α/T, where a is a constant. The ends of the rod are kept at Temperatures T1 ...

prove \int_{0}^{\infty}{\frac{x^3}{e^x-1}\mathrm{dx}}=\frac{\pi^4}{15} ...

A horizontal tube, open at both ends, contains a column of liquid. the length of the liquid column does not change with temperature. Let γ = coefficient of volume expansion of the liquid and α= coefficient of volume expansi ...

a heat conducting piston can freely move inside a closed thermally insulated cylinder with an ideal gas. in equilibrium the piston divides the cylinder into 2 equal parts , the gat Temp. being equal to T0 . the piston is slow ...

In which case would boiling of 1 kg water be quicker a)In a flat pan of negligible height b)In a very thin capillary of length 76cm ...

*Image* P-V diagram of same mass of a gas are drawn at two different temperatures T1 and T2 . Explain whether T1 > T2 or T2 > T2 My answer was T1 > T2 but given is T2 > T2 am i correc t or wrong also i do have a e ...

A solid body X of heat capciity C cools cc to newtons law of cooling. the atmospheric temp 300k.At time t=0 its temp is 400k it and at time t1its temp is 350K At this time t1the body X is connected to a large body Y at atmosp ...

Can any one explain The mpemba effect illucidately.. that is... The hot water freezing before the cold....I can't make out.. ...

In the outer atmosphere the temp. remains 500°C.But an animal would freeze instead of boiling,explain why....... ...

1. Find the work performed by one mole of a Van der Walls gas during its isothermal expansion from volume V1 to V2 at a temperature T. i hav d answer but just try to see ur thought on it. so just do it ...

A thin tube of uniform cross section is sealed at both ends. It lies horizontally, the middle 5 cm containing mercury and the two equal ends containing air at the same pressure "P". When tube is held at an angle 60° with the ...

One mole of an ideal gas in initial state A undergoes a cyclic process ABCA as shown. Its pressure at A is Po. then (a) Internal energies at A and B are same (b) Work done by the gas in the process AB is PoVo ln4 (c) pressure ...

a wall consists of alternating blocks with length d and coefficient of thermal conductivity k1 and k2 . the cross sectioal area of the blocks are the same . determine the coefficient of thermal conductivity of the wall... {an ...

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*Image* find the final tempreature if piston is slowly dispalced a dist " x" to rght .assume temp is same in both chambers at any instanat. ...

A student using a constant volume gas thermometer measures d pressure at d triple point of water (0.01°C) to be 45000 N/m2 and d prssure at d boiling temperature of water (100°C) 2 b 60000N/m2. assume that pressure varies l ...