Recently Active Thermal Physics Questions

*Image* i am getting some answer bt i need confirmation..post ur method +answer .. ...

For a certain process ,the molar heat capacity of an ideal gas is CV+ R/2. Then identify the process a)PV=constant b)P/V=constant c)V2/P=constant ...

If the molecules were not allowed to collide with each other, would you expect more evaporation or less evaporation? ...

a vertical cylinder of height 100 cm contains air at a constant temperature. The top is closed bya frictionless light piston. The atmospheric pressure is equal to 75 cm. of Hg. Mercury is slowly poured over the piston. find t ...

a very simple question: why do molecules of highly polar molecules have energy even at the absolute zero? ...

Why is β=2α and γ=3α?? ...

Consider two identical spheres,one of which lies on a thermally insulating plate and the other hangs on an insulating thread.Equal amounts of heat is given to the 2 spheres. Which will have a higher temp. ?? ...

b,a,c are three positive numbers in G.P. and a+b+c=abc, then least value of a^4+a^2+7 is equal to (where a^4 is a to the power 4 and a^2 is a to the power 2) ...

Q. In real gases Cp-Cv is equal to, less than , or greater than R ? ...

i'm in std.IX. Can anyone plz suggest me some good books to study 4 physics, that can help me a lot in my ICSE boards? ...

Why is β=2α and γ=3α? ...

A cylindrical tube of volume 'V' with adiabatic walls containing an ideal gas.The internal energy of this ideal gas is given by 1.5nRT.The tube is divided into two equal part by a fixed diathermic wall.Initially, the pressure ...

Q1. In a container of negligible mass 140 g of ice initially at -15°C is added to 200g of water that has a temperature of 40°C.If no heat is lost to the surroundings ,what is the final temperature of the system and masses o ...

A bullet of mass 10 g moving with a speed of 20m/s hits on a ice block of mass 990g kept on a frictionless floor and gets stuck on it.How much ice will melt if 50%of the lost K.E goes to ice?(Temp of ice block=0 degree celciu ...

true or false. Adiabatic & isothermal curves start from the same point & never meet again......... ...

Q1. A spherical shell is heated. The volume changes according to the equation Vθ=V0(1+γθ). Does the volume refer to the volume enclosed by the shell or the volume of the material making up the shell or both? Q2. Does the t ...

in dU=dW+dQ if dQ=0 then dU=dW. LHS is dependent on the initial and final coordinates of the system but RHS is dependent on both state and path. How is this possible? plz help ...

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CAN ANYONE PLEASE TELL ME IN PLAIN WORDS (=> NO LINKS, PLEASE) WHAT A THERMOCOUPLE IS??? ...

*Image* I heat a the string of a pendulum .... Definitely it's time period will change ...... it will increase ... but will the time lost in one day be the same as the time lost in 1 week ..... If no how do i calculate it ... ...

A straight glass tube with its lower end sealed has a length \ell=152\ \mathrm{cm} . The lower half contains one mole of an ideal diatomic gas. The top half contains mercury and the top of the tube is open to atmosphere (atmo ...

two bubbles of radius r1 and r2 coalses to form a enw bubble of radius R .....under isothrmal conditions thne wat s d value of R ?? ...

ie To find the ratio of Cp to Cv... If n1 moles of a gas having γ1, and n2 moles of a gas having γ2 are mixed , then what is the value of γmix The formulae given was => n1+n2 = n1 + n2 --------------- ------------- ---- ...

Temperature of a body comes down to 40°C from 50°C in 5 min...in how much time temperature will come down to 30°C...temp of surroundings 20°C.. widout calculator ...

a thermocouple is made frm two metals antimony n bismuth .if one of the junction is kept cold n other hotthen e current ll flow frm a)antimony to bismuth at hot junction b)bismuth to antimony at cold jctn' c)not flow d)flow f ...

1)A solid sphere and a hollow sphere of same material ,size are heated to same temperature and allowed to cool. If temp diff bet body and sphere is t, then a)Both spheres will cool at same rate b)hollow faster c)solid faster ...

*Image* The bar buckles as a result of a temp rise of 32 deg c. l0=3.77m and alpha=25x10-6.Find x.(the bar buckles exactly at the center) ...

Q. 4. An insulated container of gas has two chambers separated by an insulating partition. One of the chambers has volume V1 and contains ideal gas at pressure P1 and temperature T1. The other chamber has volume V2 and contai ...

An air bubble of volume V is released from the botoom of a lake which has depth of 11m. find the volume of the bubble at the surface of the lake. the water ha s density 1000 kg/m3. at the release point of the bubbleand at the ...

at ideal diatomic gas goes througha process where its pressure is inversely proportional to its temperature. a]calculate molar specific heat for the process. b] find the work dne by 2 moles of the gas if its temperature chang ...