one liter air-filled ionization chamber is maintained at standard temperature and pressure. What is the exposure...
one liter air-filled ionization chamber is maintained at standard temperature and pressure. What is the exposure rate in Roentgen (R) if the saturation current is 10-12 amperes? At standard temperature and pressure, the density of air is 1.29 x 10-6 kg/cm3.
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one liter air-filled ionization chamber is maintained at
standard temperature and pressure. What is the exposure...
2. Air is steadily discharged from a large chamber in which the pressure is 500 kPa,...
2. Air is steadily discharged from a large chamber in which the pressure is 500 kPa, the temperature is 30°C, and the velocity is effectively zero through a nozzle, as shown in Fig. 2. Assuming one dimensional isentropic flow, find: (a) if the pressure at some section of the nozzle is 80 kPa, the Mach number, temperature, and velocity at this section. (b) if the nozzle has a circular cross-section with a diameter of 12 mm at the section discussed...
A cylinder is filled with 0.10 mol of an ideal gas at standard temperature and pressure,...
A cylinder is filled with 0.10 mol of an ideal gas at standard temperature and pressure, and a 1.4-kg piston seals the gas in the cylinder (see figure) with a frictionless seal. The trapped column of gas is 2.0-m high. The piston and cylinder are surrounded by air, also at standard temperature and pressure. The piston is released from rest and starts to fall. The motion of the piston ceases after the oscillations stop with the piston and the trapped...
A2. Ethylene vapour C2H4 at 27°C is burned in a combustion chamber with 15% excess air, which is also supplied at 27 °C. The temperature and pressure of the products of combustion are 640 °C and 1.1...
A2. Ethylene vapour C2H4 at 27°C is burned in a combustion chamber with 15% excess air, which is also supplied at 27 °C. The temperature and pressure of the products of combustion are 640 °C and 1.1 bar respectively. The heat released in the combustion chamber is used to heat oil. The combustion chamber is well insulated (a) Obtain the stoichiometric and the actual chemical equation for this process [1596] [1096] (b) The air fuel ratio by mass for the...
Temperature and pressure at the beginning of the compression process of an air-standard Otto cycle are...
Temperature and pressure at the beginning of the compression process of an air-standard Otto cycle are 295 K and 100 kPa, respectively. The compression ratio is 10 and the maximum temperature during the cycle is 2200 K. Draw P-v and T-s diagrams of the cycle and determine: a) The net work in kJ/kg. b) The thermal efficiency. c) The mean effective pressure, in kPa. Assume R = 287 J/kg.K for air.
1. At standard temperature and pressure, carbon dioxide has a density of 1.98 kg/m^3. What volume...
1. At standard temperature and pressure, carbon dioxide has a density of 1.98 kg/m^3. What volume (m3 ) does 1.75 kg of carbon dioxide occupy at standard temperature and pressure? 2.What mass of water (in kg) can be contained in a box whose dimensions are 225 mm by 225 mm by 401 mm? (Density of water = 1000 kg/m^3) 3.How much force (N) does the atmosphere exert on one side of a vertical wall 1.22 m high and 2.44 m...
1.) Consider the gas turbine with air-standard Brayton cycle shown below Temperature, T and Pressure, P...
1.) Consider the gas turbine with air-standard Brayton cycle shown below Temperature, T and Pressure, P are measured at the following points in the cycle: Turbine: input: TH = 1200 K, PH = 800 kPa output: TL = 662.4 K, PL = 100 kPa Compressor: input Tc = 300 K, Pc = 100 kPa output: Th = 543.4 K, Ph = 800 kPa Note: the working fluid is air which has Cp = 1.005 kJ/kg.K, k = 1.4, R =...
Surprise Quiz (1) The temperature at the beginning of the compression process of an air standard...
Surprise Quiz (1) The temperature at the beginning of the compression process of an air standard Otto cycle with a compression ratio of 8 is 27 °C=540 R, the pressure is 105 Pa, and the cylinder volume is 5.66 x 104 m². The maximum temperature during the cycle is 1727 °C=3600R. For the compression and PI 3 expansion processes, use T3 = 3600°R isentropic equations from equation sheet. Tv*-* = T, v*-? PV = P, V. n=11 - T3 =...
a) What is the physical interpretation of the wet-bulb temperature? b) During winter time a room...
a) What is the physical interpretation of the wet-bulb temperature? b) During winter time a room is maintained at a steady temperature and humidity by an air-conditioning system shown. 200 m/min of room return air at 30°C, 50% relative humidity is first mixed with 40 m/min of outdoor at 10°C, 20% relative humidity. The mixed air is then introduced to a heater where the temperature of the air is raised to 45°C and supplied to the room. [Note that air...
a) What is the physical interpretation of the wet-bulb temperature? b) During winter time a room...
a) What is the physical interpretation of the wet-bulb temperature? b) During winter time a room is maintained at a steady temperature and humidity by an air-conditioning system shown. 200 m/min of room return air at 30°C, 50% relative humidity is first mixed with 40 m/min of outdoor at 10°C, 20% relative humidity. The mixed air is then introduced to a heater where the temperature of the air is raised to 45°C and supplied to the room. [Note that air...
How to solve question 44 s the anoint P, where FIGURE P13.40 gauge pressure of the...
How to solve question 44
s the anoint P, where FIGURE P13.40 gauge pressure of the the needle meets the wider chamber of the syringe? A 6 General Problems 41 Il As discussed in Section 13.4, a person' of titanium is 4.5 g/cm3. 125 g of titanium iss weight of the sph l The shaped into a cube. What is the length of each edge? You need to d s percentage of body fat suspend it R0 can be estimated...
2. Air is steadily discharged from a large chamber in which the pressure is 500 kPa, the temperature is 30°C, and the velocity is effectively zero through a nozzle, as shown in Fig. 2. Assuming one dimensional isentropic flow, find: (a) if the pressure at some section of the nozzle is 80 kPa, the Mach number, temperature, and velocity at this section. (b) if the nozzle has a circular cross-section with a diameter of 12 mm at the section discussed...
A cylinder is filled with 0.10 mol of an ideal gas at standard temperature and pressure, and a 1.4-kg piston seals the gas in the cylinder (see figure) with a frictionless seal. The trapped column of gas is 2.0-m high. The piston and cylinder are surrounded by air, also at standard temperature and pressure. The piston is released from rest and starts to fall. The motion of the piston ceases after the oscillations stop with the piston and the trapped...
A2. Ethylene vapour C2H4 at 27°C is burned in a combustion chamber with 15% excess air, which is also supplied at 27 °C. The temperature and pressure of the products of combustion are 640 °C and 1.1 bar respectively. The heat released in the combustion chamber is used to heat oil. The combustion chamber is well insulated (a) Obtain the stoichiometric and the actual chemical equation for this process [1596] [1096] (b) The air fuel ratio by mass for the...
Temperature and pressure at the beginning of the compression process of an air-standard Otto cycle are 295 K and 100 kPa, respectively. The compression ratio is 10 and the maximum temperature during the cycle is 2200 K. Draw P-v and T-s diagrams of the cycle and determine: a) The net work in kJ/kg. b) The thermal efficiency. c) The mean effective pressure, in kPa. Assume R = 287 J/kg.K for air.
Surprise Quiz (1) The temperature at the beginning of the compression process of an air standard Otto cycle with a compression ratio of 8 is 27 °C=540 R, the pressure is 105 Pa, and the cylinder volume is 5.66 x 104 m². The maximum temperature during the cycle is 1727 °C=3600R. For the compression and PI 3 expansion processes, use T3 = 3600°R isentropic equations from equation sheet. Tv*-* = T, v*-? PV = P, V. n=11 - T3 =...
a) What is the physical interpretation of the wet-bulb temperature? b) During winter time a room is maintained at a steady temperature and humidity by an air-conditioning system shown. 200 m/min of room return air at 30°C, 50% relative humidity is first mixed with 40 m/min of outdoor at 10°C, 20% relative humidity. The mixed air is then introduced to a heater where the temperature of the air is raised to 45°C and supplied to the room. [Note that air...
a) What is the physical interpretation of the wet-bulb temperature? b) During winter time a room is maintained at a steady temperature and humidity by an air-conditioning system shown. 200 m/min of room return air at 30°C, 50% relative humidity is first mixed with 40 m/min of outdoor at 10°C, 20% relative humidity. The mixed air is then introduced to a heater where the temperature of the air is raised to 45°C and supplied to the room. [Note that air...
How to solve question 44
s the anoint P, where FIGURE P13.40 gauge pressure of the the needle meets the wider chamber of the syringe? A 6 General Problems 41 Il As discussed in Section 13.4, a person' of titanium is 4.5 g/cm3. 125 g of titanium iss weight of the sph l The shaped into a cube. What is the length of each edge? You need to d s percentage of body fat suspend it R0 can be estimated...
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