iWhat type of air mass do you think would be responsible for cold, dry winter weather in Ireland? a.mT b.cT c.cP d.mP iiWhich of the following statements about specific humidity is TRUE? Select one: a.specific humidity changes as a given mass of air expands b.specific humidity is also known as relative humidity c.specific humidity is measured in grams of water vapour per kilogram of air d.specific humidity changes as a given mass of air is compressed

iWhat type of air mass do you think would be responsible for cold, dry winter weather in Ireland? a.mT b.cT c.cP d.mP iiWhich of the following statements about specific humidity is TRUE? Select one: a.specific humidity changes as a given mass of air expands b.specific humidity is also known as relative humidity c.specific humidity is measured in grams of water vapour per kilogram of air d.specific humidity changes as a given mass of air is compressed

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter5: Temperature And Heat

Section: Chapter Questions

Problem 19P: . On a winter day, the air temperature is — 15°C, and the humidity is 0,001 kg/m3. (a) What is the...

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a. If the absolute humidity of air is 27.6 g/kg, how many grams of water vapor are there in the 4.8 kg of air? b. Air at temperature 20.0°C contains some water vapor. If the partial pressure of water vapor is 1.98 kPa, what is the relative humidity of the air in %? The saturation water vapor pressure at 20.0°C is 2.34 kPa. c. If the relative humidity of air is 80 % at 18.0°C, what is the partial pressure of water vapor in the air in the unit of kPa? The saturation water vapor pressure at 18.0°C is 2.07 kPa.
17. Which of the following three statements concerning relative humid- ity valucs of 30% and 40% arc true? Note that when the relative humidity is 30%, the air temperature may be different than it is when the relative humidity is 40%. A. It is possible that at a relative humidity of 30% there is a smaller partial pressure of water vapor in the air than there is at a relative humidity of 40%. B. It is possible that there is the same partial pressure of water va- por in the air at 30% and at 40% relative humidity. C. It is possible that at a relative humidity of 30% there is a greater partial pressure of water vapor in the air than there is at a relative humidity of 40%. (a) A, B, and C (b) Only A and B (c) Only A and C (d) Only B and C (e) Only A
17. Which of the following three statements concerning relative humidity values of 30% and 40% are true? Note that when the relative humidityis 30%, the air temperature may be diff erent than it is when the relativehumidity is 40%. A. It is possible that at a relative humidity of 30% there is a smaller partial pressure of water vapor in the air than there is at a relativehumidity of 40%.B. It is possible that there is the same partial pressure of water vapor in the air at 30% and at 40% relative humidity. C. It is possible that at a relative humidity of 30% there is a greater partial pressure of water vapor in the air than there is at a relative humidity of 40%.(a) A, B, and C (b) Only A and B (c) Only A and C (d) Only B and C(e) Only A
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. On a winter day, the air temperature is — 15°C, and the humidity is 0,001 kg/m3. (a) What is the relative humidity? (b) When this air is brought inside a building, it is heated to 20°C. If the humidity isn't changed, what is the relative humidity inside the building?
1. An airplane flying with the wind, took 2 hours to travel 1000 km and 2.5 hours in flying back. What was the wind velocity in kph?
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The diagram below shows a weather instrument used to determine relative humidity. 20 O T.......I....I.... ....L....... 40 10 30 50 Wet bulb 20 40 °C Dry bulb 10 30 50 What is the relative humidity? 1. 40% 2. 36% 3. 8% 4. 4%
Terminal Velocity 2. Given: Atmospheric pressure = 101.3 kPA Air density = 1.20 kg/cubic meter Size of rain droplet; Set C=0.6mm, Temperature = 20 deg. C Determine; a. The force due to gravity and buoyant force in N. b. What is the drag force in N if the rain drop is in state of equilibrium? Consider vertical forces only c. If the temperature becomes 40 deg C (density varies), compare the terminal velocity, make a conclusion. Use drag coefficient same with 20 deg C. d. If the diameter of rain drop is 2.0 mm, compare the terminal velocity, make a conclusion.
6. At an altitude of 160 km, the density of air is 1.5 * 10 ^ - 9; kg / (m ^ 3) and the temperature is approximately 500 K. What is the pressure ?
During adiabatic humidification process, increases. Select one: a. wet bulb temperature b. relative humidity c. dry bulb temperature