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Molecular Physics | Thermodynamics
A wooden block ( 20 cm x 20 cm x 20 cm ) has a relative density of 0.9. What weight ( in air) W of a sinker will cause it to be fully submerged?
Molecular Physics | Thermodynamics
A 28.45 g metal specimen of gold and 25.75 g metal specimen of iron, each at a temperature of 100.0 °C were dropped into 570.0 mL of water at a temperature of 17.70 °C. The molar heat capacity of iron and gold are 25.19 J mol -1 °C -1 and 25.41 J mol 1 °C -1 respectively. Assume the density of water to be 1.00g/mL, what is the final temperature of the water and pieces of metals?
Molecular Physics | Thermodynamics
1.Find the increase in the boiling point of water at 100ºc when the pressure is inncrease by 2 atmospheres.Latent heat of vaporisation of steam is 540 cal/gm and 1 gm of steam occupies 1677 cm3 volume.
2.Calculate the change in entropy when 10 kg of water at 100ºc is converted into steam at the same temperature.
3.Show that etropy is the measurement of disorder in any thermodynamic process.
2.Calculate the change in entropy when 10 kg of water at 100ºc is converted into steam at the same temperature.
3.Show that etropy is the measurement of disorder in any thermodynamic process.
Molecular Physics | Thermodynamics
The maximum amount of mechanical energy that can be converted into heat in any process
(a) is 100%
(b) depends upon the temperature at intake and exhaust
(c) depends upon the amount of friction present
(d) is same for reversible and irreversible process
(a) is 100%
(b) depends upon the temperature at intake and exhaust
(c) depends upon the amount of friction present
(d) is same for reversible and irreversible process
Molecular Physics | Thermodynamics
Air expands from 5 litres to 10 litres at 2 atm pressure. What is the eternal work done?
Molecular Physics | Thermodynamics
A father pushes horizontally on his daughter's sled to move it up a snowy incline, as illustrated in the figure, with h = 3.5 m and θ = 10°. The total mass of the sled and the girl is 35 kg and the coefficient of kinetic friction between the sled runners and the snow is 0.20. If the sled moves up the hill with a constant velocity, how much work is done by the father in moving it from the bottom to the top of the hill?
Molecular Physics | Thermodynamics
in an experiment involving the spiral spring,f is the residing force and x the extension of the spring. the equation f =-kx gives the relationship between f and x. what does k measure in the experiment?
Molecular Physics | Thermodynamics
The predominant mode of heat transfer in solids is a.convection b.conduction c.radiation d.diffusion
Molecular Physics | Thermodynamics
Heat transfer from components is __________to surface area
Directly proportional
Inversely proportional
Equal
Not related
Directly proportional
Inversely proportional
Equal
Not related
Molecular Physics | Thermodynamics
Calculate how much heat is needed to be supplied to a gas at a pressure of 1.25 X 10^5 Pa, such that the pressure increases by 25 per cent at constant volume, and the internal energy by 120J.
