Problem 2 Suppose that the heat capacities CA and CB of two objects A and B...
Problem 2 Suppose that the heat capacities CA and CB of two objects A and B are measured at constant pressure and they are found to be temperature-independent. Initially, TB > TA. Suppose the two objects are brought into thermal contact but are isolated from the surroundings. What is the equilibrium temperature of the combined objects?
Homework Answers
Add Answer to:
Problem 2 Suppose that the heat capacities CA and CB of two
objects A and B...
Two vessels A and B each contain N molecules of the same ideal monatomic gas at the same pressure P. Initially, the two...
Two vessels A and B each contain N molecules of the same ideal monatomic gas at the same pressure P. Initially, the two vessels are thermally isolated from each other, and have initial temperatures TA and Ta respectively. The two vessels are brought into thermal contact, and reach equilibrium at the same pressure P and the new final temperature 7, 4-2 (a) Calculate an expression for the final temperature in terms of the initial temperatures. [2 marks] (b) Find the...
10. Two equivalent objects with temperature Ta and T'p (Ta %) were placed in touch with...
10. Two equivalent objects with temperature Ta and T'p (Ta %) were placed in touch with each other under a constant pressure condition. After a while, these became to be in thermal equilibrium. Heat capacity at constant pressure for each is Cp. G) Answer temperature of the final state. (Gi) Calculate heat transferred from one object to the other.
When two objects are in thermal contact heat energy is transferred from the hot to the...
When two objects are in thermal contact heat energy is transferred from the hot to the cold object until the temperature of both becomes equal (i.e., the objects are in thermal equilibrium). Suppose you pour 20-gram milk at 200C into a cup of 80-gram tea at 920C. Assume the specific heat of tea is 4.2 J/gram.0K and that of milk is 3.9 J/gram.0K Assuming no heat is lost into the surrounding air what is the temperature of the tea and...
Two identical objects are in thermal contact. One is at a high temperature (T-hot) and the...
Two identical objects are in thermal contact. One is at a high temperature (T-hot) and the other is at a cool temperature (T-cool). Assume that this system is isolated, i.e. there is no interaction with the surroundings. Using the thermodynamic definition of entropy, explain why heat always flows from T-hot to T-cool, and never the other way around.
What is the final temperature ( 𝑇f ) of the two objects after thermal equilibrium is reached?
A 829829 g copper pan is removed from the stove at a temperature of 150 °C. It is then stacked on top of a 611611 g aluminum sheet at room temperature, 25 °C. The specific heat capacity for copper is 0.387 Jg·KJg·K and that for aluminum is 0.904 Jg·KJg·K. Assume no heat is gained or lost to the surroundings.What is the final temperature ( 𝑇f ) of the two objects after thermal equilibrium is reached?
Two containers of the same gas each holding the same amount of mass, initially at temperature...
Two containers of the same gas each holding the same amount of mass, initially at temperature T1 and T2 are brought into thermal equilibrium Assuming no heat loss to the atmosphere and constant container volumes calculate (neglect the mass of the containers): 1) The final temperature of the gas in each container 2) The change of internal energy 3) The change of entropy For this process- if: A) The containers are placed in thermal contact. B) A reversible cycle works...
Two initially separated objects, make thermal contact, m_1, c_1 and T_1 are respectively the mass, specific...
Two initially separated objects, make thermal contact, m_1, c_1 and T_1 are respectively the mass, specific heat and temperature of the first object and m_2, c_2 and T_2 are respectively the corresponding of the second object. The initial temperatures are T_20 <T_10. While body 1 slowly cools, 2 heats up slowly. a) Calculate T_2 (T_1) b) Find the change in deltropy entropy as a function of T_1 c) show that deltaS is a maximum when both bodies reach thermal equilibrium
I. (30 pts.) One mole of an ideal gas with constant heat capacities and ? 5/3...
I. (30 pts.) One mole of an ideal gas with constant heat capacities and ? 5/3 is compressed adiabatically in a piston-cylinder device from T1-300 K, pi = 1 bar to p2 = 10 bar at a constant external pressure Pext"- P2 -10 bar. Calculate the final temperature, T2, and W, Q. AU, AH for this process. 2. (20 pts.) Repeat problem 1 for an adiabatic and reversible compression. 3. (20 pts.) A rigid, insulated tank is divided into two...
2. Consider a macroscopic system of two blocks that are in thermal contact. The two-block system ...
2. Consider a macroscopic system of two blocks that are in thermal contact. The two-block system is isolated from the rest of the universe. Initially, a hotter block is at a temperature TH and a colder block is at a temperature Tc. In the final state of the system, the two blocks are at the same intermediate temperature T. Compare the following quantities for the matal state and final state: Entropy for the block that starts at TH Sf> Si...
Problem Two slabs are in perfect contact. In slab 1 (thickness Li, thermal conductivity ki) heat...
Problem Two slabs are in perfect contact. In slab 1 (thickness Li, thermal conductivity ki) heat is generating at a constant rate of S per uni volume. There is no heat generation inside slab 2 (thickness L2, thermal conductivity k2). The temperature at the left face of slab 1 (x-0) is maintained at To and the temperature at the interface between slab 1 and slab 2 (at x L) is found to be T. The right face of slab 2...
Two vessels A and B each contain N molecules of the same ideal monatomic gas at the same pressure P. Initially, the two vessels are thermally isolated from each other, and have initial temperatures TA and Ta respectively. The two vessels are brought into thermal contact, and reach equilibrium at the same pressure P and the new final temperature 7, 4-2 (a) Calculate an expression for the final temperature in terms of the initial temperatures. [2 marks] (b) Find the...
10. Two equivalent objects with temperature Ta and T'p (Ta %) were placed in touch with each other under a constant pressure condition. After a while, these became to be in thermal equilibrium. Heat capacity at constant pressure for each is Cp. G) Answer temperature of the final state. (Gi) Calculate heat transferred from one object to the other.
I. (30 pts.) One mole of an ideal gas with constant heat capacities and ? 5/3 is compressed adiabatically in a piston-cylinder device from T1-300 K, pi = 1 bar to p2 = 10 bar at a constant external pressure Pext"- P2 -10 bar. Calculate the final temperature, T2, and W, Q. AU, AH for this process. 2. (20 pts.) Repeat problem 1 for an adiabatic and reversible compression. 3. (20 pts.) A rigid, insulated tank is divided into two...
2. Consider a macroscopic system of two blocks that are in thermal contact. The two-block system is isolated from the rest of the universe. Initially, a hotter block is at a temperature TH and a colder block is at a temperature Tc. In the final state of the system, the two blocks are at the same intermediate temperature T. Compare the following quantities for the matal state and final state: Entropy for the block that starts at TH Sf> Si...
Problem Two slabs are in perfect contact. In slab 1 (thickness Li, thermal conductivity ki) heat is generating at a constant rate of S per uni volume. There is no heat generation inside slab 2 (thickness L2, thermal conductivity k2). The temperature at the left face of slab 1 (x-0) is maintained at To and the temperature at the interface between slab 1 and slab 2 (at x L) is found to be T. The right face of slab 2...
Most questions answered within 3 hours.
-
Economists believe that there are many nonmonetary gains from
further trade opening. Which of the following...
asked 6 minutes ago -
For message exchange over the Internet, the specific processes
that send and receive packets are identified...
asked 50 seconds from now -
When exposed to sunlight, a hole in a sheet of copper expands in
diameter by 0.160...
asked 3 minutes ago -
How would
you create a group that promotes multicultural
understanding?
Should a
session conducted with youth...
asked 5 minutes ago -
A 2-kg block sits on a horizontal table. There is a hole in the
table directly...
asked 19 minutes ago -
If the rate law for the reaction A ⟶ Products is rate = k[A]2 ,
calculate...
asked 23 minutes ago -
A
projectile is shot horizontally at 23.4 m/s from the roof of a
building 55 m...
asked 37 minutes ago -
Which of the following ratios would be considered a measurement
of short-term liquidity?
Select one:
a....
asked 39 minutes ago -
Nitrogen dioxide is one of the many oxides of nitrogen (often
collectively called "NOx") that are...
asked 48 minutes ago -
1/ Using ________________ as they are intended is the best
guarantee for consistency and forward compatibility....
asked 58 minutes ago -
Portfolio theory
Given the following information about firm A and the
market:δ
E (Rm)= 12 per...
asked 55 minutes ago -
Albert files his income tax return (showing a total tax of
$23,000) 5½ months after the...
asked 59 minutes ago