AC PowerPhys-Respiratory Volumes

7. Describe the relevance of relative humidity. Please select all answers that apply: a) Relative humidity is the same as absolute humidity. b) Relative humidity is the same as specific humidity. c) Relative humidity is the same as mixing ratio. d) Relative humidity is the ratio of the amount of moisture the air hold to the maximum amount of moisture the air can hold at the same temperature. e) Mathematically relative humidity can be given by RH = X ,/X v,sat = P v/ p v. sat

22. A driver drives up a mountain in a sports car with a barometer. At the foothills of the mountain, the barometer reads 75 cm Hg absolute. In some location up the mountain, the barometer reads 70 cm Hg absolute. Assuming that the average density of the atmospheric air is 1.2 kgm/m³, estimate the change in altitude of this trip. 22. In fig holow determine the minimum amount of water that needs to be stored in

Pls.answer thank you! A classroom that normally contains 40 people is to be air-conditioned with window air-conditioning units of 5 KW cooling capacity. A person at rest may be assumed to dissipate heat at a rate of about 360 KJ/hr. There are 10 light bulbs in the room, each with a rating of 100 watts. The rate of heat transfer to the classroom through the walls and the windows is estimated to be 15,000 KJ/hr. If the room air is to be maintained at a constant temperature of 21°C, determine the number of window air-conditioning units required.

C)If both cyclists have 170 mm cranks on their bikes, what will be the mechanical advantage (considering only the movement of the feet with a constant force for walking and riding), in percent, that each rider will have achieved over walking the same distance? (This can be found by dividing the distance wallked by the distance the feet move in riding.)

bliuzodt to mopolb 9. If machine parts are degreased by means of kerosene as shown in the diagram, how much kerosene make-up is needed per day? How much kerosene has to enter the degreasing vat per day? There are about 3 lb of grease per 100 lb of machine parts, and 60 tons of machine parts are processed each day. Five thousand pounds of kerosene (the 10% solution) are carried away by the machine parts each day but drip off and are caught and put back in the degreasing vat. Two hundred pounds of the 10% solution are lost each day from the vat by evaporation, spillage, or by being carried away.

essay general gases of hospitals.

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4. Relative Humidity calculations (use the Water vapor Pressures and Contents scale)! The actual water content (absolute humidity) of a sample of room air is measured and is °C, what is the relative found to be If the room temperature is humidity? Use examples below to fill in the blanks above: a. Absolute humidity is 11.91 mg/L; Temperature is at 24 °C b. Absolute humidity is 13.89 mg/L; Temperature is at 30°C c. Absolute humidity is 10.01 mg/L; Temperature is at 60 °F

Let's design a proper classroom on campus for the ENG M 558: a room that has an area of 1,125 sq ft with 12 ft ceilings is to be assigned to 45 students. 1. What is a rule of thumb in designing fresh air per person per hour? 2. How much ventilation (in cu. ft per min) would be recommended to 200 cu. ft 250 cu. ft 300 cu. ft 350 cu. ft 400 cu. ft ◆ Intensity of odors in our classroom?

As far as maintenance costs are concerned: O for high levels of maintenance commitment, breakdown maintenance costs exceed preventive maintenance costs. O for low levels of maintenance commitment, preventive maintenance costs exceed breakdown maintenance costs. preventive maintenance is always more economical than breakdown maintenance. breakdown maintenance is always more economical than preventive maintenance when the "full cost of breakdowns" is taken into consideration. O for low levels of mairtenance commitment, breakdown maintenance costs exceed preventive maintenance costs.

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What is the pressure of air (lb/ft2) on a standard day at 20,000 ft? Group of answer choices 72 lb/ft2 2116 lb/ft2 14.7 lb/ft2 4608 lb/ft2

Principles of Chemical Engineering – First Year 10. A solution in water contains 1.704 kg of HNO3/kg H;0, and the solution has a specific gravity of 1.382 at 20°C. What is the mass of HNO; in kg per cubic meter of solution at 20°C? Lecture: 3

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soil test recommendation for your vegetable garden calls for 2 lb. of N/1,000 sq ft, O lb. of P205/1,000 sq ft, and 1 lb. of K20/1,000 sq ft. The garden is 40 ft by 20 ft. How many fertilizer blends is needed to supply the recommended amount of Nitrogen?