64. (II) A pressure cooker is a sealed pot designed to cook food with the steam produced by boiling water somewhat above 100°C. The pressure cooker in Fig. 13-32 uses a weight of mass m to allow steam to escape at a certain pressure through a small hole (diameter d) in the cooker's lid. If d = 3.0 mm, what should m be in order to cook food at 120°C? Assume that Weight (mass m) m atmospheric pressure outside the cooker is 1.01 X 105 Pa. Diameter d FIGURE 13-32 Problem 64. Steam Water Water

(6) The Eiffel tower is built from iron and it is about 324 m high. Its coefficient of linear expansion is approximately 12 x 10-6 (C°)-l and assumed constant. What is the increase in the tower's length when the temperature changes from 0°C in winter to 30°C?

Physics: Temperature [ A bubble of air is rising up through the ocean. When it is at a depth of 22.0 m below the surface, where the temperature is 5.00°C, its volume is 1.10 cm3. What is the bubble's volume (in cm3) just before it hits the ocean surface, where the temperature is 20.0°C? Assume the average density of sea water is 1,025 kg/m3. ] May I ask for some help in setting this problem up and what equations I should use, please? I have not been taught fluid dynamics, and that is not being taught in the current chapter, so I am not sure how to relate the depth and density to the gas law parts. Also, is it correct to assume I'll be using PV = nRT in this problem, and/or some variation of P1V1/T1 = P2V2/T2?

(6) The Eiffel tower is built from iron and it is about 324 m high. Its coefficient of linear expansion is approximately 12 x 10-6 (C°)- and assumed constant. What is the increase in the tower's length when the temperature changes from 0°C in winter to 30°C?

(2) Express the normal human body temperature, 37°C, and the sun's surface temperature, 6000°C, in Fahrenheit and Kelvin.

To ascertain the temperature of flue gases, 1.8 kg of copper of specific heat 0.395 kJ/kg-°K was suspended in the flue until it attained the temperature of the gases, and then dropped into 2.27 kg of water at 20°C.' If the resultant temperature of the copper and water was 37.2°C , find the temperature of the flue gases.

(I) Super InvarTM, an alloy of iron and nickel, is a strong material with a very low coefficient of thermal expansion (0.20 x 10-/C°). A 1.8-m-long tabletop made of this alloy is used for sensitive laser measurements where extremely high tolerances are required. How much will this alloy table expand along its length if the temperature increases 6.0 C°? Compare to tabletops made of steel.

Problem 2 97. As we drill down into the rocks of Earth's crust, the temperature typically increases by 3.0°C for every 100 m of depth. Oil wells are commonly drilled to depths of 1830 m. If water is pumped into the shaft of the well, it will be heated by the hot rock at the bottom and the resulting heated steam can be used as a heat engine. Assume that the surface temperature is 20°C. (a) Using such a 1830-m well as a heat engine, what is the maximum efficiency possible? (b) If a combination of such wells is to produce a 2.5-MW power plant, how much energy will it absorb from the interior of Earth each day? SSM

(28) (a) How many molecules are there in 1L of air at a temperature of 27°C? (b) How many kilomoles of air are in that volume? (c) The best vacuum that can be produced corresponds to a pressure of about 10-16 atm. How many molecules remain in 1 L? (20) 11: