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The expression for the number of molecules in a Maxwellian gas having speeds in the range vto v+ dv is
dNv= 4πN(m÷2πkbT)^3/2 v^2exp[-(mv^2÷2kbT)]dv using this relation, obtain an expression for most probable speed
Discuss the sedimentation in brownian motion and show that during sedimentation, particle concentration decreases exponentially as height increases
Calculate the temperature at which root mean square speed of gas molecules is double of its speed at 27°c pressure remaining constant
Your mother asked you to do the laundry for the day. She reminded you that some of the
clothes are used by your father in the farm. The clothes are soiled and greasy. She even
instructed you to save resources and energy because we are in a state of pandemic due
to Covid-19. As a student of Physical Science and with the knowledge on the effect of
intermolecular forces on substances, how are you going to perform the task in such a way
that energy is not wasted?
A gas turbine plant receives air at 1 bar and 290°K and compresses it to 5 bar. If the temperature of air after compression is 1000°K; find the thermal efficiency of the turbine
5 mol of an ideal gas at a constant temperature if 0°c. If 2kj of energy is inputted into the system and the net change of internal energy ∆u=0, by what factor does the pressure of the gas change.
A gas is filled with oxygen at a temperature of 25°c to a pressure of 2atm. If the temperature is increased to 50°c and the pressure is increased to 5atm, by what factor does the density of the oxygen increase by.
What happens to the air temperature in valley when cold air blowing from mountain top descending to the valley?
In a transistor, beta=45, the voltage across 5k? resistance which is connected in the collector circuit is 5volts. Find the base current.
A non-insulated pipe passes through a room in which air and walls are at 25°C. The outside
diameter of the pipe is 70 mm, and its surface temperature and emissivity are 200°C and 0.8,
respectively. What are the surface emissive power and irradiation? If the coefficient associated
with free convection heat transfer from the surface is 15W/m2K, what is the rate of heat loss
from the surface per unit length of the pipe?
(E = 2270.48 W/m2
, G = 447.14 W/m2
, Q/l = 997.90 W/m)
#339914 on Dec 2023