Suppose the atmosphere has its pressure given by p ( z ) = p 0 e...
Suppose the atmosphere has its pressure given by p ( z ) = p 0 e ^ − z / H with p 0 = 1 atm and T ( z = 0 ) = 273 K. Now suppose a 1 kg parcel is lifted adiabatically one scale height H . How much work does the parcel do on the environment in the process? What is the change in its specific internal energy, u ?
Homework Answers
can u show the 11th and 12th questions I1. The pressure of a gas is given...
can u show the 11th and 12th questions
I1. The pressure of a gas is given by Pwhere P is in atmosphere and V is in litres. If the gas expands from 20 to 60 L and undergocs an increase in internal energy of 225 cal. How much hcat will be absorbed during the process? 12. 5 moles of an ideal gas was initially at 315 K and 20 atm. The expansion of gas takes place adiabatically when the external...
Er<E EF E E> E) W>0) and Polytropic PathsSpcl Cases for Ideal Gas n 0 constant...
Er<E EF E E> E) W>0) and Polytropic PathsSpcl Cases for Ideal Gas n 0 constant pressure n 1 constant temperature n k constant entropy, adiabatic (q 0) n constant volume and W<0 W 0 For air R 0.287 kJ/kg-K and k Cp/Cv 1.4 if pi 300 kPa, v, 0.861 m3/kg then T, 900 K For T Ta if pa /p 3 then va = m2/kg pv RT and (T, n/(n-1) p2 V1 For vi v if po /p1 3...
A 1.00 mole sample of an ideal monatomic gas, originally at a pressure of 1.00 atm,...
A 1.00 mole sample of an ideal monatomic gas, originally at a pressure of 1.00 atm, undergoes, undergoes a three-step process. (1) It is expanded adiabatically from T1 = 550 K, to T2 = 389 K; (2) it is compressed at constant pressure until the temperature reaches T3; (3) it then returns to its original temperature and pressure by a constant volume process. (a) Plot these processes on a PV diagram. (b) Determine T3. (c) Calculate the change in internal energy, the...
suppose you are given the height of the atmosphere. why cant you use " P = Pinitial + rho*g*h to calculate the atmos...
suppose you are given the height of the atmosphere. why cant you use " P = Pinitial + rho*g*h to calculate the atmospheric pressure
A 2.0 kg bar of copper is heated at atmospheric pressure so that its temperature increases...
A 2.0 kg bar of copper is heated at atmospheric pressure so that its temperature increases from 20°C to 50°C. (a) What is the work done on the copper bar by the surrounding atmosphere? SOLUTION Conceptualize This example involves a solid, whereas the preceding two examples involved liquids and gases. For a solid, the change in volume due to thermal expansion is very small. Categorize Because the expanslon takes place at constant atmospheric pressure, we categorize the process as isobaric...
Question 9 20 pts A closed system of Ammonia in an equilibrium state has pressure p-800...
Question 9 20 pts A closed system of Ammonia in an equilibrium state has pressure p-800 kPa and internal energy u-262.64 kJ/kg. Which of the following values is closest to the specific enthalpy of the state? 280 kJ/kg 63.53 kJ/kg 198.13kJ/kg 263.95 kJ/kg
Mumiework Problem HW2.4 If you don't remember this term, look it up. It's important for this...
Mumiework Problem HW2.4 If you don't remember this term, look it up. It's important for this problem Nitrogen expands adiabatically in a piston-cylinder assembly from an initial state where pa = 7 bar, v4 = 0.2552 m3/kg and T1 = 600 K, to a final state where p2 = 1.5 bar. The process is polytropic with n = 1.4. The change in specific internal energy, in kJ/kg for nitrogen can be approximated as Au = uz-u, = (0.81 kJ/kg-K)(T2-T) (T's...
5. A rigid tank initially contains 10 kg O2 at 200 kPa and 600 K. Now...
5. A rigid tank initially contains 10 kg O2 at 200 kPa and 600
K. Now O2 is gradually cooled under constant volume until its
temperature reaches 455 K. (18 Points) (a) Calculate the pressure
of O2 at final state. (4 points) (b) Determine the boundary work.
(6 points) (b) Calculate the heat transfer during this process. (8
Points)
let me know if u want the property table
MAE 320 - Thermodynamics + > e ecampus.wvu.edu/bbcswebdav/pid-6846897-dt-content-rid-82617141 1/courses/star50314.202005/MAE320-2020-Summer-HW04.pdf Q4 to Q6...
34) Which of the followine represent STP Standard Temperature and Pressure) conditions A) TOK and Plam BT-0"C and P...
34) Which of the followine represent STP Standard Temperature and Pressure) conditions A) TOK and Plam BT-0"C and P760 atm CT-273 K and P-0 atm D) T-273 K and P lam ETIK and Patm 25) 23) Which of the following is TRUE for a liquid that is placed in a sealed container? A) Condensation of the evaporated molecules in the car can only occur once all of the liquid molecules are in the vapor for gaseous) state. B) A set...
24) Which of the following represent STP (Standard Temperature and Pressure) conditions? A) T -0 K...
24) Which of the following represent STP (Standard Temperature and Pressure) conditions? A) T -0 K and P = 1 atm B) T=0°C and P 760 atm C) T= 273 K and P = 0 atm D) T-273 K and P-1 atm E) T = 1 K and P = 1 atm 25) Which of the following is TRUE for a liquid that is placed in a sealed container? A) Condensation of the evaporated molecules in the jar can only...
can u show the 11th and 12th questions
I1. The pressure of a gas is given by Pwhere P is in atmosphere and V is in litres. If the gas expands from 20 to 60 L and undergocs an increase in internal energy of 225 cal. How much hcat will be absorbed during the process? 12. 5 moles of an ideal gas was initially at 315 K and 20 atm. The expansion of gas takes place adiabatically when the external...
Er<E EF E E> E) W>0) and Polytropic PathsSpcl Cases for Ideal Gas n 0 constant pressure n 1 constant temperature n k constant entropy, adiabatic (q 0) n constant volume and W<0 W 0 For air R 0.287 kJ/kg-K and k Cp/Cv 1.4 if pi 300 kPa, v, 0.861 m3/kg then T, 900 K For T Ta if pa /p 3 then va = m2/kg pv RT and (T, n/(n-1) p2 V1 For vi v if po /p1 3...
A 2.0 kg bar of copper is heated at atmospheric pressure so that its temperature increases from 20°C to 50°C. (a) What is the work done on the copper bar by the surrounding atmosphere? SOLUTION Conceptualize This example involves a solid, whereas the preceding two examples involved liquids and gases. For a solid, the change in volume due to thermal expansion is very small. Categorize Because the expanslon takes place at constant atmospheric pressure, we categorize the process as isobaric...
Question 9 20 pts A closed system of Ammonia in an equilibrium state has pressure p-800 kPa and internal energy u-262.64 kJ/kg. Which of the following values is closest to the specific enthalpy of the state? 280 kJ/kg 63.53 kJ/kg 198.13kJ/kg 263.95 kJ/kg
Mumiework Problem HW2.4 If you don't remember this term, look it up. It's important for this problem Nitrogen expands adiabatically in a piston-cylinder assembly from an initial state where pa = 7 bar, v4 = 0.2552 m3/kg and T1 = 600 K, to a final state where p2 = 1.5 bar. The process is polytropic with n = 1.4. The change in specific internal energy, in kJ/kg for nitrogen can be approximated as Au = uz-u, = (0.81 kJ/kg-K)(T2-T) (T's...
5. A rigid tank initially contains 10 kg O2 at 200 kPa and 600
K. Now O2 is gradually cooled under constant volume until its
temperature reaches 455 K. (18 Points) (a) Calculate the pressure
of O2 at final state. (4 points) (b) Determine the boundary work.
(6 points) (b) Calculate the heat transfer during this process. (8
Points)
let me know if u want the property table
MAE 320 - Thermodynamics + > e ecampus.wvu.edu/bbcswebdav/pid-6846897-dt-content-rid-82617141 1/courses/star50314.202005/MAE320-2020-Summer-HW04.pdf Q4 to Q6...
34) Which of the followine represent STP Standard Temperature and Pressure) conditions A) TOK and Plam BT-0"C and P760 atm CT-273 K and P-0 atm D) T-273 K and P lam ETIK and Patm 25) 23) Which of the following is TRUE for a liquid that is placed in a sealed container? A) Condensation of the evaporated molecules in the car can only occur once all of the liquid molecules are in the vapor for gaseous) state. B) A set...
24) Which of the following represent STP (Standard Temperature and Pressure) conditions? A) T -0 K and P = 1 atm B) T=0°C and P 760 atm C) T= 273 K and P = 0 atm D) T-273 K and P-1 atm E) T = 1 K and P = 1 atm 25) Which of the following is TRUE for a liquid that is placed in a sealed container? A) Condensation of the evaporated molecules in the jar can only...
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