Nitrogen gas is filled in an insulated container. If alpha fraction of moles dissociates without exchange of any energy then the fractional change in its temperature is:
A beaker contains some water at room temperature. A student places a mercury-in-glass thermometer in the water with the bulb of the thermometer just beneath the surface of the water.
The student uses an electric fan to blow air across the open top of the beaker. She notices that the reading on the thermometer begins to decrease.
Question : Explain, in terms of water molecules, why the temperature of the water at the surface begins to decrease.
Sand drops vertically at the rate of 2kg/s unto conveyor belt moving horizontally with a velocity of 0.1m/s.
a) Calculate the extra power needed to keep the belt moving.
b) The rate of change of kinetic energy of the sound.
,c) While is the power twice as rate as the rate of change of kinetic energy.
One mile of a mono atomic gas is taken from an initial pressure P and volume v to final pressure 2p and volume 2v by isothermal expansion and compression show the path in PV diagram and calculate the work done and energy absorbed by the gas?
The primitive translation vectors of a crystal lattice are given by :
a₁=(√(3)a/2)i + (a/2)j
a₂=-(√(3)a/2)i + (a/2)j
a₃= ck
To calculate the volume of the primitive cell and obtain the primitive translation vectors of the reciprocal lattice.
If mr.M has a cup of water with room temperature of 20 °C but adds 80 g of ice to the drink, so it cools to 6°C and adds more ice to drink of water so the temperature is 10°C what will the volume of the drink be?