Molecular Physics | Thermodynamics Answers

A piece of copper of mass 300g at a temperature of 950 Celsius is quickly transferred to a vessel of negligible thermal capacity containing 250g of water at 25 Celsius . If final steady temperature of the mixture is 100 ceslsius.calculate the mass of the water that boil away . (Specific heat capacity of copper=4.2×10^2. specific heat capacity of water=4.2×10^3. latent heat of vaporization of steam=2.26×10^6)

A ball is floating at rest in a fluid.

The ratio of the volume of the fluid displaced, VD, to the volume of the ball, Vball, is:

VD/Vball = 0.79

If the ball has a density of 950 kg m−3 then what is the density of the fluid? (to 2 s.f and in kg m−3)

A fixed mass of gas of volume 600 cm3 at a temperature of 27° c is cooled at constant pressure to a temperature of 0° c. What is the change in volume

Consider a one dimensional monatomic lattice with lattice constant 4.91A and atoms of mass 28amu. The speed of sound in the lattice is 11.6kms-1 . A) calculate the maximum frequency of waves that can be transmitted by the lattice.B) calculate the interatomic force constant of the lattice

How many joules of heat must be absorbed to cool 5.00 kg of water from 75.0 degrees * C to 10.0^ C?

For two states defined by dV = 0 and dT  0, prove that the thermodynamic variables are connected through relation
(dv/dp)T(dp/dT)V(dT/dv)P= -1

If two moles of Nitrogen is heated from 20 to 30◦C, what are the changes in the translational, rotational and total internal energy?

Name six (6) instruments used for measuring pressure and write short notes on each of them

Using relation for accessible state,(omega)=B(v-b)^Nf(E) here f(E) is function of energy only. Obtain equation of state p(v-b)=NkT

A 50kg track athlete running at 10.0 m/s jumps over a hurdle. If athlete’s horizontal component of the velocity over the hurdle is 8.8 m/s and the air resistance is disregarded, how high was the jump?