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Syllabus

derive an expression for work done in adiabatic process?

what are the characteristics of simple harmonic motion

the volume of a air bubble becomes 11 times on reaching the surface of water from bottom of a lake,if the heigth of mercury be 75 cm,then calculate the depth of the lake,density of water of nthe lake is 1.02*10power3.

During an experiment, an ideal gas is found to obey an additional law

VP2 = constant. The gas is initially at a temperature T and volumeV.When it expends to a volume 2V, what does new temperature become.

_{2}â gas molecules kept at same volume and temperature, is (assume normal incidence on walls)â(1) 2 : 1

(2) 1 : 2

(3) $2\sqrt{2}$ : 1

(4) 1 : $2\sqrt{2}$

At what temperature is the rms velocity of hydrogen molecule equal to that of an oxygen

a 3cm cube of ironn has one face at 100

^{o}c and te other in a block of ice at 0^{0}c . if k of iron= 0.2 CGS units and L for ice is 80cal/gm, then the amount of ice that melts in 10 mins is [assume steady state heat transfer]a]450gm

b]900gm

c]350gm

d]500gm

How can we get PV =NK

_{B}T . what is the value of K_{B?}(A) 1 /T

(B) 2/T?

(C) 3 /T

(D) 4 /T

Urgent reply needed plzz help my exams are in this week:-

Q1) The volume of an air bubble becomes 11 times on reaching the surface of water from the bottom of a lake . If the height of mercury in the barometer be 75 cm , then calculate the depth of the lake.density of water is 1.02 x 10

^{3 Ans:100m}(i) Can a body have zero velocity and finite acceleration? Explain with example.

(ii) Can a body have constant speed but varying velocity?

^{2}is 1 kg m^{–3}. Find the root mean square speed of its molecule at 0°C. (pressure is constant)Hint: ${v}_{rms}=\sqrt{\frac{3P}{\rho}}$

The ratio of no of collisions per second at the walls of container by He and O

_{2}gas molecules kept at same volume and temperature is ?DERIVE THE RELATION BETWEEN GAMMA AND DEGREE OF FREEDOM (f).

a gas mixture consists of 2 moles of oxygen and 4 moles of argon at temp. T . neglecting all vibrational modes , what will be the total internal energy of the system

an argon gas cylinder equal to the rms speed of a helium gas atom

at –10 °C ? (Atomic mass of Ar = 40.0 u, of He = 4.0 u).

at moment t=0 a particle of mass m starts moving due to a force F=J cos ut where j and u are constants. find the distance covered by the particle as a function of t.draw the approximate plot of this function

a narrow glass tube 80 cm long and opens at both the ends is half immersed in mercury now the top of the tube is closed and is taken out of mercury . a 20cm long mercury column remains in the tube . find atmospheric pressure??

plz gv a detailed explanation

a flask of volume 1*10^ -3 contains3.0*10^12 oxygen molecules at a certain temperature.the mass of one molecule of oxygen is 5.3*10^-26 kg and root mean square velocity of its molecule at same temperature is400 ms^-1.calculate the pressure of the oxygen gas in the flask.

i want derivation of cp and cv for monoatomic, diatomic, triatomic..... plz answer fast its urgent 2morrow is my exam..

A gas at P

_{o }is contained in a vessel.If the masses of all the molecules is halved and their velocities doubled, then the resulting pressue will bea) 4P

_{o}b) 2P_{o}c) P

_{o}d) P_{o}/2Calculate the temperature at which the root mean square speed of a gas

doubles its value at STP. (standard temperature is taken as 273K )_{2 }is 32/0.calcultate the force required to take away a flat plate of radius 5cm from the surface of water. Given surface tension of water=72 dyne/cm ???? (in CGS and S.I)

can u give me proof of bernoulli theorem

When one mole of monoatomic gas is mixed with one mole of a diatomic gas , then the equivalent value of Cfor mixture will be ? (if vibration mode is neglected )

_{p}/C_{v}orγwhat is the ratio of rms speed of oxygen and hydrogen molecule at the same temparature ??????????

why gases have two specific heat capacity?explain why specific heat at constant pressure is greater than specific heat at constant volume?

difference between ideal gas and perfect gas?

Show that specific heat of the solids is C=3R

On the basis of it prove Charle's law and Boyle's law.

what is law of equipartition of energy? please explain in simple words.

How many electrons would have to be removed from a copper penny to leave it with a positive charge of 10^-7 c.

what is degree of freedom?

Q. A tank used for filling helium balloons has a volume of 0.6 ${m}^{3}$ and contains 2.0 mol of helium gas at 20.0$\xb0C$. Assuming that the helium behaves like an ideal gas

(i) What is the total translational kinetic energy of the molecules of the gas?

(ii) What is the average kinetic energy per molecule?

How can we find the no of degrees of freedom ?? For example:- An ant is moving on a horizontal surface. The no of degrees of freedom of the ant will be ?

Q). A gas is filled in a vessel at 7$\xb0$C. If x fractional part escapes out at 27$\xb0$C, find x. (Assuming pressure constant).

16. If heat energy is given to an ideal gas at constant pressure, then select the graph which best represents the variation of VT with temperature (T)

3/2K

_{B}T=1/2mV^{2}where V

^{2}=mean square velocity.But how did u get E/N=3/2k

_{B}Tunder constant acceleration the average velocity of a particle is half the sum of its initial and final velocities .is this still true if the acceleration is not constant?EXPLAIN

The atmosphere contains 3 x 10

^{25}molecules of air in one cubic meter and the mean speed of the molecules is 10^{3}m s^{-1}. ind their mean free path and from that calculate the number of collisions of a molecule with other molecules in 1sec.(i.e. collision frequency). (Take the diameter of air molecules to be 2 x 10^{-10}m).^{-1}√2 / is above the ground level if theta > tan^{-1}√2 / may be above the ground level if theta < tan^{-1}√2./ may be above the ground level if theta < tan^{-1}√2./ below the ground level if theta > tan^{-1}√2.If $\alpha $ moles of a monoatomic gas are mixed with $\beta $ moles of a polyatomic gas and mixture behaves like diatomic gas, then (neglect the vibrational mode of freedom)

$\left(1\right)2\alpha =\beta \left(2\right)\alpha =2\beta \phantom{\rule{0ex}{0ex}}\left(3\right)\alpha =-3\beta \left(4\right)3\alpha =-\beta $

Show that velocity of sound in air increases approximately by 0.61 m/sec for every 1 degree celsius rise in temperature

Explain why Cp > Cv ?

Derive an xpression for pressure of gas in a container

âQB). The figure shows a wire passing through the ice slab. Ice melts at low temperature due to increase in pressure. When the wire passes through the slab, the slab does not split. What is this phenomenon of refreezing called ?

C). Obtain an expression for the coefficient of linear expansion $\left({\mathrm{\alpha}}_{1}\right)$ of a rod of length L.

D) A body cools from 80°C to 50°C in 5 minutes. Calculate the time it takes to cool from 60°C to 30°C. The temperature of the surroundings is 20°C.

E) With reverence to the figures given below, identify which figure indicates land breezes and which figure indicates sea breezes. Explain how they are formed.

Explain why a brass tumbler feels much colder than a wooden tray on a chilly day?