What increase in altitude is necessary in the stratosphere to halve the pressure? Assume a constant temperature of -56.9°c and the gas constant, R=287J/kg/K
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What increase in altitude is necessary in the stratosphere to halve the pressure?
Assume a constant temperature of -56.9°c and the gas constant, R=287J/kg/K
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- The wind-chill index is modeled by the function W = 13.12 + 0.6215T – 11.37v0.16 + 0.3965TV0.16 where T is the temperature (°C) and v is the wind speed (km/h). When T = -19°C and v = 39 km/h, by how much would you expect the apparent temperature W to drop if the actual temperature decreases by 1°C? (Round your answers to two decimal places.) °C What if the wind speed increases by 1 km/h? ㅇCOn a winter day, the air temperature is −5°C, and the humidity is 0.001 kg/m3. (a) What is the relative humidity (in percent)? (b) When this air is brought inside a building, it is heated to 35°C. If the humidity isn't changed, what is the relative humidity (in percent) inside the building?Determine at what altitude in meters the air pressure is twice less than on the sea level using the barometic equation that is pressure as a function of height. Given that the temperature is 288.15 K. P=P0e -Mgh/RT, where Po is the pressure at sea level, M is the molar mass of air (in kg/mol), T is standard temperature, R is universal gas constant (8.314 N.m/mol K).
- On a day when atmospheric pressure is 76 cmHg, the pressure gauge on a tank 4. On a day when atmospheric pressure is 76 cmHg, the pressure gauge on a tank reads the pressure inside to be 400 cmHg. The gas in the tank has a temperature reads the pressure inside to be 400 cmHg. The gas in the tank has a temperature of 9°C. If the tank is heated to 31°C by the Sun, and if no gas exits from it, what of 9°C. If the tank is heated to 31°C by the Sun, and if no gas exits from it, what will the pressure gauge read?If the average normal temperature decreases with altitude in the troposphere is 6.5 °C/km, calculate the approximate temperature at 6 km if the surface temperature is 16 °C. Lapse rate = 0.005645 degC/mThe atmosphere of the planet Mars is 95.3% carbon dioxide (CO2) and about 0.03% water vapor. The atmospheric pressure is only about 600 Pa, and the surface temperature varies from -30°C to -100°C. The polar ice caps contain both CO2ice and water ice. Could there be liquid CO2 on the surface of Mars? Could there be liquid water? Why or why not? [please answer all questions. thank you]
- At an altitude of 11,000 m (a typical cruising altitude for a jet airliner), the air temperature is -56.5°C and the air density is 0.364 kg/m³. What is the pressure of the atmosphere at that altitude?The following data are given for the pressure and temperature variation in air as a function of elevation: Elevation in [m] 0. Temperature in [°C]_pressure [atm] 28 1. 1000. 25 0.796 2000. 19 0.6314 3000. 12 0.4982 4000. 3 0.3905 5000. -1 0.3043 6000. 11 0.2356 You want to check if these measurements are correct. You are going to use a balloon and rise in the corresponding altitudes. If the balloon weighs 1000kg (all included, weight of yourself, equipment, inflated part etc) calculate the volume of inflated part of the balloon, so that the initial acceleration is 15m/s?. Assume that the balloon is a sphere and neglect the deflated part of the balloon as far as volume is concerned. Can you verify all measurements with this volume of the balloon? What kind of adjustments do you need to make in order to complete your mission?The absolute humidity at atmospheric pressure at 25 ° C is 0.017 kg water / kg dry air. Specify: a. Partial pressure of water vapor. = kPa b. Relative humidity = % c. Dew point temperature. = (°C)
- Consider two identical buildings: one in Los Angeles, California, where the atmospheric pressure is 101 kPa and the other in Denver, Colorado, where the atmospheric pressure is 83 kPa. Both buildings are maintained at 21°C, and the infiltration rate for both buildings is 1.2 air changes per hour (ACH). That is, the entire air in the building is replaced completely by the outdoor air 1.2 times per hour on a day when the outdoor temperature at both locations is 10°C. Disregarding latent heat, determine the ratio of the heat losses by infiltration in the two cities.The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm air is at T = 40°C and the corresponding convection coefficient is h₁ = 30 W/m².K, what are the inner and outer surface temperatures, in °C, of 4-mm-thick window glass, if the outside ambient air temperature is T = -27.5°C and the associated convection coefficient is h, = 65 W/m².K? *0,0 Evaluate the properties of the glass at 300 K. Ts,i = Tse = i i °℃ °CThe dry and wet bulb temperatures inside a 2500 ft² house with 8 ft ceilings are measured to be 75°F and 68°F respectively. How many gallons of moisture must be removed from the house by dehumidification to bring the humidity down to 65%, the ASHRAE 62.1 recommended maximum, while maintaining a dry bulb temperature of 75°F? 7