Molecular Physics | Thermodynamics Answers

A cup is made of an experimental material that can hold hot liquids without significantly

increasing its own temperature. The 0.80 kg cup has an initial temperature of 37 degrees C

when is submerge in 1.54 kg of water with an initial temperature of 20 degrees C. What is the

specific heat capacity if the final temperature is 27 degrees C?A cup is made of an experimental material that can hold hot liquids without significantly

increasing its own temperature. The 0.80 kg cup has an initial temperature of 37 degrees C

when is submerge in 1.54 kg of water with an initial temperature of 20 degrees C. What is the

specific heat capacity if the final temperature is 27 degrees C?

A beaker of hot water is placed on the bench. Describe all the ways in which it looses heat and suggest a simple way of minimizing each.

1000cm³ of gas are converted at 27°c and 700mm of maccury. Convert this volume to s.t.p

the volume of a gas at temperature -73°c and pressure 480mm hg is 1000 cm find the volume of the same gas at pressure 760mm of maccury and 127°c

How much energy is needed to turn 2 kg of water, at 100°c? Specific latent heat of vaporization of water =2300 000 J\kg.

Pat Kinch used a racing cycle to travel 20.0 m/s. Suppose Kinch moved at this speed around a circular track. If the combined mass of Kinch and the cycle was 92.0 kg and the average centripetal force was 920 N, what was the radius in meters of the track? (Centripetal Force: Fc = m(v^2)/r ) (Write the number answer only.)

Air at 15°c flows steady without friction at the rate of 3kg/s along a convergent dot,at some cross section B the pressure is 0.9 of that at cross section A and the velocity is 30m/s .The flow is arranged to be isothermal.calculate the rate of heat exchange with the surrounding between A and B and the ratio of the cross sectional area of A and B

1. Relate work, heat and internal energy explain why these concepts are interconnected.
2. Explain briefly the simple thermodynamics processes by relating the formula of the first law of thermodynamics, AU=Q-W.
3. Explain what is System & Surroundings and how do Work &Heat influence them.
4. There are many ways to state the 2nd law of Thermodynamics. Explain why Heat can flow spontaneously from a hot object to a cold object; it will not flow spontaneously from a cold object to a hot object.
5. How do we achieve a perpetual heat engine? If that engine really do exist, how does it change the current circumstances of the world?
6. Why is it important to know the Coefficient of Performance of heat pumps, refrigerators and air conditioning systems?
7. Discuss what is entropy and how is it related to one of the statement of the 2nd law of thermodynamics.
8. Explain what are macrostates and microstates as being part of the statistical interpretation of entropy and relate it to 2nd law of thermodynamics by citing examples.

Please help me with this questions, I badly need the answers tonight. I just don't know what I am going to answer because I am so confused about this topic.

How much energy is needed to turn 2 kg of water, at 100°c? Specific latent heat of vaporization of water =2300 000 J\kg.

A set of forces are acting on an object. The first force, with a magnitude of 24.70 N, is directed at ─258o and

the second force, with a magnitude of 53.20 N, is directed at 37o north of east. The third force with a magnitude

of 166.50 N is directed at 270o, and the fourth force of 49.92 N is directed at 50o east of south. Solve for the

resultant force and its exact direction analytically.