9. Assuming an air density of 1.21 kg/m^3, determine how many kilograms of air occupy a classroom that has a 100 square meter floor area and a 4 meter high ceiling. b). What is the weight of the air in the room in Newtons (N)? c) What is the weight of the air in pounds (lbs.) Your answer

(a) A rectangular gasoline tank can hold 50.0 kg of gasoline when full. What is the depth of the tank if it is 0.500-m wide by 0.900-m long? (b) Discuss whether this gas tank has a reasonable volume for a passenger car.

A classroom that has a 200-square meter floor area and a 3.5 meter-high ceiling. a) What is the volume of the room (in m^3). b) Assuming a room temperature of 20 deg C, what is the density of the air in the room? c) How many kilograms of air occupy the room? d) What is the weight of the air in Newtons (N)? e) What is the weight of the air in Pounds (lbs.)?

1. The Air is Heavy! a) Calculate the weight of Earth's atmosphere using standard atmospheric pressure on the surface and using the mean radius of the Earth (average between polar and equatorial radius). b) Calculate the weight of Mar's atmosphere using its standard atmospheric pressure at the surface and its mean radius (look up Mar's atmospheric pressure and/or will post if needed). Agaivloz maldo 108 ripuoT iT tonininT lo ma natoau-m

7. DETAILS OBINPHYS8 4.P.016. The depth of the Pacific Ocean in the Mariana Trench is 36,198 ft. What is the gauge pressure at this depth? psi

8. The oxygen consumption at rest for a 70-kg person is 14.5 liter/h and that 2% of this requirement is provided by the diffusion of oxygen through the skin. Assuming that the skin surface area of the person is 1.7m2, calculate the diffusion rate for oxygen through the skin in liter/h-cm2. 9. How long can a man survive in an airtight room that has a volume of 27m?. Assume that his surface area is 1.70m?. Use data provided in the point 8.

Question 1.55 only

Helium gas is used to inflate balloons fora party. The density of helium is 0.179 kg/m. Find the density in g/cm and the specific volume in m / kg. O a. 0.000179 g/cm and 10.5867 m / kg O b. 0.179 g/cm3 and 5.5867 m / kg Oc. 0.00179 g/cm and 5.5867 m /kg O d. 0.000179 g/cm and 5.5867 m /kg

An air bubble originating from an under waterdiver has a radius of 5 mm at some depth h.When the bubble reaches the surface of thewater, it has a radius of 6.3 mm.Assuming the temperature of the air in thebubble remains constant, determine the absolute pressure at this depth h. The accelerationof gravity is 9.8 m/s2.Answer in units of Pa. b. Determine the depth of the diver.Answer in units of m.

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