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How do you calculate enthalpy of air?
To calculate the enthalpy of air, you can use the specific heat capacities of the air components and the temperature. The formula is ( H = c_p \cdot T ), where ( H ) is the enthalpy, ( c_p ) is the specific heat capacity at constant pressure (approximately 1.006 kJ/kg·K for dry air), and ( T ) is the temperature in Kelvin. For more accurate results, consider the composition of the air and use a reference state for enthalpy calculations. Adjustments may also be made for humidity if moist air is involved.
How fast is the speed of sound at an elevation of 20000 feet?
Forget the altitude. Care about the temperature!The speed of sound is dependent on the temperature and not on the air pressure of the altitude. At 20 degrees celsius or 68 degrees Fahrenheit the speed of sound is 343 m/s or 1236.3 km/h or 1126.7 ft/s or 667.1 knots.Scroll down to related links and look at "Speed of sound - temperature matters, not air pressure".Here is an easy calculator if you know the temperature. Do not care about the altitude!Scroll down to related links and look at "Calculation of the Speed of sound in air and the important temperature".Asume a temperature of -70 degrees Celsius for a height of 44,000 feet.
How will the temperature affect the spontaneity of a reaction with positive h and s?
A high temperature will make it spontaneous.
How will temperature affect the spontaneity of a reaction positive delta h and delta s?
∆G = ∆H - T∆S and for it to be spontaneous, ∆G should be negative. If both ∆H and ∆S are positive, in order to get a negative ∆H, the temperature needs to be elevated in order to make the ∆S term greater than the ∆H term. So, I guess the answer would be "the higher the temperature, the more likely will be the spontaneity of the reaction."
What causes varying temperatures and air pressures?
h
If it's hot day outside what can you conclude?
the air can have very little moisture
Where in Ireland would you get an SMD conversion for your astra h?
trgh
How do you install fog lights on Astra H?
if the astra h has not got fog lights fitted they can be added it involves some tech2 work to enable them change the light switch for one with front fogs on and if you dont have the wiring in place you ll need to wire into the UEC and fuse and relay to power check out the astra h forums for a how to
Where is the location of the diagnostic socket for a Vauxhall Astra H?
under the handbrake
Your astra h 2006 model 1.4 wont rev?
insp in my care wathe theis
What is a good source for finding information on Astra H car specifications?
There are a number of sites where one can find information on Astra H car specifications. One site that is very good is the "ultimatespecs" website which offers specs for different models and different years.
Can anyone tell me why my 99 grand prix external temp is still displaying the wrong temp after i replaced the external ambient sensor for dual climate control?
Does it always give false readings or just at times near start up? thought this may helpThe outside air temperature sensor is located in the frontgrill area under the front bumper of the vehicle. The HAVC control head usesthis sensor to receive information on ambient air temperature. With this information,the HVAC control head will give the driver the outside air temperature on the digital display. If the outside temperature increases, the displayed temperaturewill not change until:The vehicle's speed is above 32 km/h (20 mph) for approximatelyone and a half minutes.The vehicles speed is above 72 km/h (45 mph) for approximatelyone minute.These delays help prevent false readings. If the displayed temperaturegoes down, the outside temperature display is updated immediately. If thevehicle has been turned off for more than three hours, the current outsidetemperature will be shown when the vehicle is started. If it has been turnedoff for less than three hours, the temperature will be recalled from the previousvehicle operation.
Where is port deactivation position sensor on astra h?
under the ECU on the upper side of the intake manifold
Does anyone have a wiring diagram for astra tailgate boot lock?
Try this site. It includes a lot of detail about the Astra talgate/boot lock assembly including the circuit diagram you need. http://sites.google.com/site/gmlockrepairkit/home/astra-h-zafira-b
Is the enthalpy change (H) independent of temperature?
No, the enthalpy change (H) is not independent of temperature. It can vary with temperature changes.
What has the author Sydney H North written?
Sydney H. North has written: 'Low temperature distillation' -- subject(s): Coal, Distillation, Fuel 'Compressed air in mining and industry'
What has the author H H Kingham written?
H. H. Kingham has written: 'Surface temperature patterns in Christchurch at night' -- subject(s): Atmospheric temperature, Climate
