. A small rigid vessel contains air and is fitted with a pressure gage. When the vessel is outside where the temperature is 100 F, the pressure gage reads 17.4 psig. When the vessel is placed in the...
2. A rigid tank contains air at a gage pressure of 100 kPa at the surface of a lake. How deep would the tank have to be submerged for the gage pressure to be 0 kPa? a. The gage pressure would not change b. The gage pressure would rise as the tank is submerged c. 8.7 m d. 10.2 m
4. A rigid vessel contains 0.46 lbm of air at 80 F and 200 psia. The air is heated to 160 F with an electric resistance heater. How much energy is added? a. 2.7 Btu b. 6.3 Btu c. 3.9 Btu d. 8.8 Btu 5. What is the final pressure of the air in problem 4? a. 200 psia b. 400 psia c. 230 psia d. 318 psia
4. A rigid vessel contains 0.46 lbm of air at 80 F...
#1). A thermometer is taken from an inside room to outside of the building where the air temperature is 5' F. After 1 minute, the thermometer reads 55° F and after 5 minutes, the thermometer reads 30°F. What was the initial temperature of the room?#2). A thermometer is removed from a room where the air temperature is 70°F to outside the building where the temperature is 10° F. After minute, the thermometer reads 50°F. What is the reading at t...
1. A rigid (constant volume) tank sealed by a valve initially contains 100 kg of air at a pressure of 100 kPa and 300 K. At time t = 0, the valve for the air tank is opened in a controlled manner and air leaks out isothermally (constant temperature) of the tank at a constant mass flow rate of 1 kg/s. The valve is closed after 75 seconds. Answer the following questions: Assuming air is an ideal gas, what is...
QUESTION TWO (15 marks) A. A small chemical-industry tank fitted with a manometer as shown contains a dense fluid with specific gravity S 3.0 and 20 cm deep. Workers should have added water to a depth of 15 cm above the dense fluid. What height Ah do you expect to find when you inspect the tank? (7 marks) 15 cm Water Ah? 20 cm S 3.0 B. A sea-water aquarium is planned to have a circular window with diameter D-80...
Problem2 (a) Suppose outside temperature is 55 °F while the temperature inside a building is 72 F. The building is heated but not air conditioned, so the partial pressure of water vapor is the same both inside and outside the building. Finally, suppose the dew point outside is 40°F What is the dew point inside? What are the relative humidities inside and outside the building? (We are most comfortable if relative humidity is between 30% and 50%-This question shows why...
1)(Hint: Cp=1.005 kJ/kg-K, Cv=0.718 kJ/kg-K, R=0.287 kJ/kg-K). An air-tight room contains 80 kg of air, and a 2-kW baseboard electric resistance heater in the room is turned on and kept on for 15 min. The temperature rise of air at the end of 15 min is 2)An example of when it is appropriate to model a substance as an ideal gas is when a. The pressure and temperature are close to the critcal point b. The pressure and temperature are...
Part B Review The large tank contains air at an absolute pressure of 64 psi and temperature of 70 F The nozzle has a throat diameter of 1 in. and an exit diameter of 1.75 in. (Figure 1) Determine the absolute pressure within the connected pipe, when the nozzle chokes and maintains isentropic supersonic flow within the divergent section of the nozzle. Express your answer to three significant figures and include the appropriate units P- psi Submit Incorrect; Try Again...
9,10,11,12,13,14, and 15 please
a syringe is filled with 40. mL. of air at room temperature (22°C) in the lab and then this syringe is placed into a boiling water bath. After S minutes, the volume of gas in in the syringe (still at lab pressure) should be close to which volume? 9. Which of these is a true statement about a below a tube that is filled with a liquid such as mercury b. The weight of the liquid...
Due Date: Group: Process Instrumentation -Lab 4 Exercise 7. psi An open atmospheric vessel containing an unknown mixture, A direct level measurement determined the level h 30.9 ft. Bottom tank pressure P. gauge reads 11.7 psig. The density of the material is unknown. Known: • specific weight of water is 62.43 lbs/ft. • External pressure is 1 atm • P=SGxh a is the material water? Yes No b. Explain why and show work that validates your answer: c. Determine the...