Related questions
I am doing some practice problems to prepare for an exam and i cannot solve this problem, specifically part a but I would like to check this problem
A piston cylinder device contains 0.8 kg of air initially at 100 kPa, 27 °C. The air is now compressed slowly in a polytropic process during which PV^1.3 =constant, until the volume reaches 1/2 its original volume. The system is then heated at constant pressure until the volume gets back to its original value. NOTE: THIS IS NOT A CYCLE.
Data: Rair = 0.287 kJ/kg K; Cv=0.731 kJ/kg K; Cp=1.018 kJ/kgK.
-
a) Determine the amounts AND directions of the Work and Heat(each in kJ) for each of the two processes. show all work used to get your values.
-
b) Sketch the two processes on a P-v diagram, clearly showing all three state points and the two processes with their directions.
Trending nowThis is a popular solution!
Step by stepSolved in 3 steps
- Part A A gas is compressed from 600 cm to 200 cm³ at a constant pressure of 500 kPa. At the same time, 100 J of heat energy is transferred out of the gas. What is the change in thermal energy of the gas during this process? For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Fire piston. Express your answer with the appropriate units. μΑ AEth Value Jarrow_forwardIn a container of negligible mass, 0.300 kg of ice at an initial temperature of -25.0°C is mixed with a mass m of water that has an initial temperature of 80.0°C. No heat is lost to the surroundings. Part A If the final temperature of the system is 19.0°C, what is the mass m of the water that was initially at 80.0°C? Express your answer with the appropriate units. m = Submit μA Value Request Answer Units ? Reviewarrow_forwardCan you please answer this question and all of the sub problems show all of the steps to the solutionarrow_forward
- Perfectly rigid containers each hold n moles of ideal gas, one being hydrogen (H₂) and other being neon (Ne). Part A If it takes 300 J of heat to increase the temperature of the hydrogen by 3.00° C, by how many degrees will the same amount of heat raise the temperature of the neon? Express your answer in degrees Celsius. ATNe = Submit VG ΑΣΦ Request Answer ? °C Qarrow_forward5.0 g of nitrogen gas at 20°C and an initial pressure of 2.8 atm undergo a constant-pressure expansion until the volume has tripled. Part C How much heat is transferred to the gas to cause this expansion? Express your answer with the appropriate units. ► View Available Hint(s) Qexp 3000 J Submit Previous Answers ✓ Correct The gas pressure is then decreased at constant volume until the original temperature is reached. Part D What is the gas pressure after the decrease? Express your answer with the appropriate units. View Available Hint(s)arrow_forwardpart carrow_forward
- I need help with A and B for this problem. I want to see the detailed steps.arrow_forwardAn ideal gas at 20°C consists of 2.2 x 1022 atoms. 3.2 J of thermal energy are removed from the gas. Part A What is the new temperature in °C? Express your answer in degrees Celsius. DA ΑΣφ T = °C Submit Request Answerarrow_forwardAn open container holds 0.550 kg of ice at -15.0°C. The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 800.0 J/min for 500.0 min. Part A After how many minutes does the ice start to melt? Express your answer in minutes. —| ΑΣΦ t = Submit Part B Request Answer t = ? min After how many minutes, from the time when the heating is first started, does the temperature begin to rise above 0.0°C? Express your answer in minutes. —| ΑΣΦ ? Review | Consta minarrow_forward
- Subject: physicsarrow_forwardT5 please help me with the answer and full solutionarrow_forwardPerfectly rigid containers each hold n moles of ideal gas, one being hydrogen (H₂) and other being neon (Ne). Part A If it takes 300 J of heat to increase the temperature of the hydrogen by 2.70°C, by how many degrees will the same amount of heat raise the temperature of the neon? Express your answer in degrees Celsius. ATNe= Submit 17 ΑΣΦ Request Answer ? °Carrow_forward