Molecular Physics | Thermodynamics Answers

A rigid vessel of volume 0.86 m3 contains 1 kg of steam at a pressure of 2 bar. Evaluate the specific volume, temperature, dryness fraction, internal energy, enthalpy, and entropy of steam. The steam is heated to raise its temperature to 150°C. Show the process on a sketch of the p–v diagram, and evaluate the pressure, increase in enthalpy, increase in internal energy, increase in entropy of steam, and the heat transfer. Evaluate also the pressure at which the steam becomes dry saturated.

Two bodies were thrown simultaneously from the same point: one, straight up, and the other, at an angle of θ = 60° to the horizontal. The initial velocity of each body is equal to v0 = 25 m/s. Neglecting the air drag, find the distance between the bodies t = 1.70 s later.

what are the major groups of organisms that belong to each of three domains? In which domains and kingdom would you classify each of the following; white willow, Escherichia coli, tapeworm and black bread mold?

what argument would you use in favour of, or against, viruses forming seventh kingdom?

(a) Describe the values of classifying organisms. (3)

(b) what is NEWEST and BROADEST taxon?

(d) what arguments would you use in favor of or against, viruses forming a 7th kingdom?

7. Which kingdom contains organisms with:

(a) many cells
(b) cell walls
(c) hyphae
(d) chloroplasts

8. Classify each of the following animals, giving the class ( and order it):

(a) human
(b) turtle
(c) lamprey
(d) shark
(e) toad
(f) bat
(g) pelican
(h) salmon

9. Give reasons why fungi should not be included in plant kingdom? (2)

10. What is the cell wall of fungi made of?

1. Describe the values of classifying organisms.

2. What is the key difference that distinguishes organisms of domain Eukarya from other two domains.

3. What is the NEWEST and BROADEST taxon?

4. What arguments would you use in favor of, or against viruses forming a seventh kingdom (3)

5. Why might kingdom Protista be thought of as the “odds and ends” kingdom? (3)

6. What are the major groups of organisms that belong to each of the three domains? In which domain and kingdom would you classify each of the following: white willow, Escherichia coli, tapeworm and black bread mold?

What is surface potential energy.

Explain degree of freedom through example.

Write down expression of work done in isothermal process.