Homework Answers
Entropy generated is equal to the change in entropy in the process i.e
Sigma = S1 - S2
Therefore S1 + Sigma = S2
Therefore equation 4th is correct.
Add Answer to:
Identify a valid specific entropy equation. (Where q is total heat divided by mass, w is...
A block of iron ore A of mass m = 350 kg and specific heat capacity...
A block of iron ore A of mass m = 350 kg and specific heat capacity C = 460 kJ/(kg·K) obeys the constitutive relations where T is temperature. The block of metal is initially at temperature T1 = 700 K and it is placed in a perfectly-sealed, constant-pressure container B containing 64 kg of air initially at 320 K and atmospheric pressure 101.3 kPa. The air in container B can be modeled as a perfect gas with specific heat capacity...
Compute total work you did? Compute heat input to Aluminum cylinder?
Compute total work you did?
Compute heat input to Aluminum cylinder?
A. Fixed c parameters Specific heat of Aluminum, c0.220 kcal/kg"C Mass of Aluminum cylin Aluminum cylinder、m-20,, 9 F meter of oylinder, Dy-1em Diameter of cylinder plus rope, D2-52 cm Average, Do (DD2)/2cm Average Radius, R Mass of "10 kg" mass, to 3 significant figures, me 106 *g Weight of 10 kg" mass, to 3 significant figures, F .IC Newtons "Quick and Dirty" Run B1. Approximate initial temperature: Thermistor Resistance...
Obtain heat q and work w given to an ideal gas (1 moD system and the...
Obtain heat q and work w given to an ideal gas (1 moD system and the ehange of the internal energy Au in the following processes. Heat capacity at constant volume, G, of the gas does not 1. AU in t A reversible isothermal expansion from (P. V.,T) to (P, V, r). reversibly at constant volume from (Pvv2,T) to (p,y, ) depend on temperature. a) b) A reversible adiabatic expansion from (P, V.T) to (P, V, T2) and then heating...
CAN SOMEONE PLEASE SOLVE C,D,E ALL OF THEM STEP BY STEP ( CLEAR HANDWRITING) Data: mass-specific...
CAN SOMEONE PLEASE SOLVE C,D,E
ALL OF THEM STEP BY STEP ( CLEAR HANDWRITING)
Data: mass-specific heat capacity of silver: cs 234 J kg-1K-1 mass-specific heat capacity of gold: c 126 J kg1K1 mass-specific heat capacity of platinum: cp 136 J kg K1 mass-specific heat capacity of ice: c 2100 J kg-1K-1 mass-specific heat capacity of water: cy4190 J kg 1K- latent heat of fusion of water: If 3.35 × 105 J kg-1 (a) Water of mass 0.1 kg at...
i got s1=7.53 and p2=1bar can you explain intetpolating with specific entropy to find the value...
i got s1=7.53 and p2=1bar
can you explain intetpolating with specific entropy to find
the value of h2s which is 2743?
please explain how to find this value with indicated tables
and clear details/laws
EXAMPLE 6.11 Determining Turbine Work Using the Isentropic Efficiency A steam turbine operates at steady state with inlet conditions of p1 5 bar, Ti 320°C. Steam leaves the tur- bine at a pressure of 1 bar. There is no significant heat transfer between the turbine and...
Heat is transferred to a gas in a piston cylinder device so that the volume changes...
Heat is transferred to a gas in a piston cylinder device so that the volume changes from 3 mºto 6 m2. The initial pressure and temperature of the gas are 400 kPa and 25°C. If the process is irreversible determine the following: 1- The final temperature of the gas. 2- The work done during the process (kJ). 3- The total change in internal energy (kJ). 4- The heat transfer for the process (kJ). 5- The total entropy change (kJ/K). Comment...
Please answet the the questions in detail it belong to Heat and Mass transfer Question2 Marks...
Please answet the the questions in detail it belong to
Heat and Mass transfer
Question2 Marks 191 In the context of a finite difference scheme for a material of thermal conductivity k, use an energy balance to derive the nodal equation for an extemal side node (illustrated) which is: heated by an electrical heater (generating surface heat flux q, W/m), .and cooled by convection (of heat transfer Tm+1,n coefficient h, W/m'K) into an ambient of air temperature T mn A...
QUESTION 4 (100 marks) (a) A tractor rated to deliver a total of 20 kN.m of torque (moment) at its rear wheels is to be...
QUESTION 4 (100 marks) (a) A tractor rated to deliver a total of 20 kN.m of torque (moment) at its rear wheels is to be used to drag a loaded silo, a short distance across a rough horizontal concrete surface. Given the co-efficient of friction between the steel and the concrete is 0.6, the radius of the rear wheels is 0.8 m (i) What is the maximum mass of the silo (in kg) that can be dragged with this tractor?...
<P 8 Calorimetry < 7 of 29 > A calonmeter is an insulated device in which...
<P 8 Calorimetry < 7 of 29 > A calonmeter is an insulated device in which a chemical reacton is contained. By measuring the temperature change, A7, we can calculate the heat released or absorbed during the reaction using the following equation: Review Constants Periodic Table A calorimeter contains 18.0 mL of water at 11.5 °C. When 2.30 g of X (a substance with a molar mass of 46.0 g/mol) is added, it dissolves via the reaction X(s) + II,...
(1) A pig lying on a 2.0 cm thick wood floor has its belly in contact...
(1) A pig lying on a 2.0 cm thick wood floor has its belly in contact with the floor. Let the contact surface area of pig's belly and floor floor be 3000 cmn'. The floor is cooler than the pig's body temperature (30°C), and at a temperature of 0.0 °C. The thermal conductivity of wood is 0.126 W/m °K. What is the conductive heat transfer under steady-state conditions? (2) The Born energy EB (SI unit kcal/mol) is a measure of...
Compute total work you did?
Compute heat input to Aluminum cylinder?
A. Fixed c parameters Specific heat of Aluminum, c0.220 kcal/kg"C Mass of Aluminum cylin Aluminum cylinder、m-20,, 9 F meter of oylinder, Dy-1em Diameter of cylinder plus rope, D2-52 cm Average, Do (DD2)/2cm Average Radius, R Mass of "10 kg" mass, to 3 significant figures, me 106 *g Weight of 10 kg" mass, to 3 significant figures, F .IC Newtons "Quick and Dirty" Run B1. Approximate initial temperature: Thermistor Resistance...
Obtain heat q and work w given to an ideal gas (1 moD system and the ehange of the internal energy Au in the following processes. Heat capacity at constant volume, G, of the gas does not 1. AU in t A reversible isothermal expansion from (P. V.,T) to (P, V, r). reversibly at constant volume from (Pvv2,T) to (p,y, ) depend on temperature. a) b) A reversible adiabatic expansion from (P, V.T) to (P, V, T2) and then heating...
CAN SOMEONE PLEASE SOLVE C,D,E
ALL OF THEM STEP BY STEP ( CLEAR HANDWRITING)
Data: mass-specific heat capacity of silver: cs 234 J kg-1K-1 mass-specific heat capacity of gold: c 126 J kg1K1 mass-specific heat capacity of platinum: cp 136 J kg K1 mass-specific heat capacity of ice: c 2100 J kg-1K-1 mass-specific heat capacity of water: cy4190 J kg 1K- latent heat of fusion of water: If 3.35 × 105 J kg-1 (a) Water of mass 0.1 kg at...
i got s1=7.53 and p2=1bar
can you explain intetpolating with specific entropy to find
the value of h2s which is 2743?
please explain how to find this value with indicated tables
and clear details/laws
EXAMPLE 6.11 Determining Turbine Work Using the Isentropic Efficiency A steam turbine operates at steady state with inlet conditions of p1 5 bar, Ti 320°C. Steam leaves the tur- bine at a pressure of 1 bar. There is no significant heat transfer between the turbine and...
Heat is transferred to a gas in a piston cylinder device so that the volume changes from 3 mºto 6 m2. The initial pressure and temperature of the gas are 400 kPa and 25°C. If the process is irreversible determine the following: 1- The final temperature of the gas. 2- The work done during the process (kJ). 3- The total change in internal energy (kJ). 4- The heat transfer for the process (kJ). 5- The total entropy change (kJ/K). Comment...
Please answet the the questions in detail it belong to
Heat and Mass transfer
Question2 Marks 191 In the context of a finite difference scheme for a material of thermal conductivity k, use an energy balance to derive the nodal equation for an extemal side node (illustrated) which is: heated by an electrical heater (generating surface heat flux q, W/m), .and cooled by convection (of heat transfer Tm+1,n coefficient h, W/m'K) into an ambient of air temperature T mn A...
QUESTION 4 (100 marks) (a) A tractor rated to deliver a total of 20 kN.m of torque (moment) at its rear wheels is to be used to drag a loaded silo, a short distance across a rough horizontal concrete surface. Given the co-efficient of friction between the steel and the concrete is 0.6, the radius of the rear wheels is 0.8 m (i) What is the maximum mass of the silo (in kg) that can be dragged with this tractor?...
<P 8 Calorimetry < 7 of 29 > A calonmeter is an insulated device in which a chemical reacton is contained. By measuring the temperature change, A7, we can calculate the heat released or absorbed during the reaction using the following equation: Review Constants Periodic Table A calorimeter contains 18.0 mL of water at 11.5 °C. When 2.30 g of X (a substance with a molar mass of 46.0 g/mol) is added, it dissolves via the reaction X(s) + II,...
(1) A pig lying on a 2.0 cm thick wood floor has its belly in contact with the floor. Let the contact surface area of pig's belly and floor floor be 3000 cmn'. The floor is cooler than the pig's body temperature (30°C), and at a temperature of 0.0 °C. The thermal conductivity of wood is 0.126 W/m °K. What is the conductive heat transfer under steady-state conditions? (2) The Born energy EB (SI unit kcal/mol) is a measure of...
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