Molecular Physics | Thermodynamics Answers

What is Gibb's paradox ? How is it resolved ?.

Write the Van der Waals equation of state for a real gas. What is the significance of the constants in this equation ?

In a gas, which physical quantity is transported in the following phenomena ?
(a) Viscosity
(b) Thermal conductivity

What is the Joule - Thomson effect ?

State the significance of Maxwell's thermodynamical relations.

What is enthalpy of a reaction ? Write down the
expression for enthalpy in terms of internal energy, pressure and volume.

What are the principles of working of the following temperature measuring devices ?
(a) Bimetallic ship
(b) Thermocouple
(c) Platinum resistance thermometer
(d) Mercury thermometer

The charger cord used to recharge a cell phone contains a transformer that reduces 240 V AC to 4 V AC. For each 1,025 turns in the input coil, how many turns are there in the output coil? (Round your answer to at least one decimal place.)

A small object is placed to the left of a convex lens and on its optical axis. The object is 33 cm from the lens, which has a focal length of 15 cm. Determine the location of the image formed by the lens. (Enter your answer in cm from the lens.)

cm from the lens

b. Describe the image. (Select all that apply.)
real
virtual
upright
inverted
enlarged
reduced
on the left side of the lens
on the right side of the lens

A 3.0 cm-tall object stands in front of a converging lens. It is desired that a virtual image 2.4 times larger than the object be formed by the lens. How far from the lens (in cm) must the object be placed to accomplish this task, if the final image is located 10 cm from the lens?