An air mass only changes its characteristics through seasonal changes has uniform temperature conditions derived from...
An air mass
| only changes its characteristics through seasonal changes |
| has uniform temperature conditions derived from its source region. |
| changes its source region but not its characteristic conditions |
| has contrasting temperature conditions derived from its source region. |
Homework Answers
changes its source region but not its characteristic conditions
The low speed let the air mass carry the features of the source region to the new region. If the air mass of the new region has different characteristics then clash might happen to cause a severe storm.
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An air mass
only changes its characteristics through seasonal changes
has uniform temperature conditions derived from...
Consider the internal temperature structure of a spherical planet with a uniform source ofheat throughout its...
Consider the internal temperature structure of a spherical planet with a uniform source ofheat throughout its interior, Q, and having a uniform mass density, ρ. The planet has aradius R. This was the case we discussed in class. Suppose this planet is far from any star, or any other source of heat. Derive an expression for the temperature at the surface of the planet, T(R), in terms of Q, ρ, R, and any other fundamental constants necessary.
8. Plot a Rayleigh line for air on the ts plane for the following inlet conditions:...
8. Plot a Rayleigh line for air on the ts plane for the following inlet conditions: pressure 3.5 105 N/m2, temperature 550 K, area 0.010 m2, and mass flow rate 30 kg/s. Plot this line for both the subsonic and supersonic region. Assume c, is constant 1004.8 J/kg-K, and that s 0 at 220 K. From the Rayleigh-line plot, determine the amount of fuel that must be burned in the air to raise its temperature to the maximum value. Assume...
Air is flowing through a duct that is 48" by 60". The air has a mass...
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It can be shown that as a mass m with specific heat c changes temperature from...
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An air mass has a temperature of 18°C and a relative humidity of 42%. a) Determine the vapor pres...
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The hot combustible gasses of a furnace are separated from the ambient air and its surrounding,...
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4 of 15 Specific humidity is sensitive to changes in air pressure. True O False 5...
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a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow rate is 1,000 cfm, the humidity ratio is 0.025 lbv/lba, and the dry air density is 0.072 Iba/ft3. b. Assume the above air enters an evaporator coil at 90°F where it is cooled in a constant humidity ratio process until reaching the 100 % RH curve ( the temperature at that point is the dew point. The air then keeps dropping in temperature, following...
A liquid has its temperature raised from 15°C to 65°C by passing it through a heater...
A liquid has its temperature raised from 15°C to 65°C by passing it through a heater in which the heating surface is maintained at 125°C by condensing steam. If the overall coefficient of heat transfer can be assumed to vary as the velocity raised to the power 0.8, what will be the exit temperature of the liquid if its velocity is doubled? Assume liquid thermal properties are temperature-independent over the range concerned. [ans. 60.15 C]
1.4: Imagine that the only energy losses in driving your car come from air resistance (i.e., no l...
Please provide claer explanations
Thanks a lot !
1.4: Imagine that the only energy losses in driving your car come from air resistance (i.e., no losses due to braking or inefficiency). If the car masses 1.50 metric tons (1500 kg) and normally produces 125 horse- power 932×10° W then far could the car drive on 10 gallons of gasoline where each gallon contains 1.3 x 109 J of enersy? Assume that the air resistance force on the car is 1000....
8. Plot a Rayleigh line for air on the ts plane for the following inlet conditions: pressure 3.5 105 N/m2, temperature 550 K, area 0.010 m2, and mass flow rate 30 kg/s. Plot this line for both the subsonic and supersonic region. Assume c, is constant 1004.8 J/kg-K, and that s 0 at 220 K. From the Rayleigh-line plot, determine the amount of fuel that must be burned in the air to raise its temperature to the maximum value. Assume...
An air mass has a temperature of 18°C and a relative humidity of 42%. a) Determine the vapor pressure and saturation vapor pressure of the air. You can use tables from the Gupta text, or the equations presented in class (which are alsc in the evapotranspiration references on the camino site). Or you may use both to be more confident of your work. b) Assume the air mass rises and cools at a rate of -10 C/km. At what elevation...
4 of 15 Specific humidity is sensitive to changes in air pressure. True O False 5 of 15 A closely grouped set of isobars will indicate slow wind speeds. True O False 6 of 15 Which direction are winds diverted in the Southern Hemisphere as a result of the Coriolis Effect? Left Right Both Left and Right They are not diverted 7 of 15 Which of the lifting methods is caused by air masses meeting? mornhin litinn Submit Save Perception...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow rate is 1,000 cfm, the humidity ratio is 0.025 lbv/lba, and the dry air density is 0.072 Iba/ft3. b. Assume the above air enters an evaporator coil at 90°F where it is cooled in a constant humidity ratio process until reaching the 100 % RH curve ( the temperature at that point is the dew point. The air then keeps dropping in temperature, following...
Please provide claer explanations
Thanks a lot !
1.4: Imagine that the only energy losses in driving your car come from air resistance (i.e., no losses due to braking or inefficiency). If the car masses 1.50 metric tons (1500 kg) and normally produces 125 horse- power 932×10° W then far could the car drive on 10 gallons of gasoline where each gallon contains 1.3 x 109 J of enersy? Assume that the air resistance force on the car is 1000....
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