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- The Eiffel Tower in Paris is 984 ft tall and is made mostly of steel. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Change in length of a measuring tape. Part A If this is its height in winter when its temperature is -8.00°C, how much additional vertical distance must you cover if you decide to climb it during a summer heat wave when its temperature is 41.9°C? Express your answer in feet. μνα ΑΣφ ? AL = ft Submit Request Answer Part B Express the coefficient of linear expansion of steel in terms of Fahrenheit degrees. Express your answer in inverse Fahrenheit degree. nνα ΑΣφ a = (°F)-1 Submit Request Answer1 of 5 BN Review Early in the morning, when the temperature is 5.0 °C. gasoline is pumped into a car's 51-L steel gas tank until it is filled to the top. Later in the day the temperature rises to 26 °C. Since the volume of gasoline increases more for a given temperature increase than the volume of the steel tank, gasoline will spill out of the tank. Part A How much gasoline spills out in this case? Express your answer using two significant figures. 中 ΑΣΦ Submit Requost AnswerPart A Assume all temperatures to be exact. If 0.060 kg of ice at 0 °C is added to 0.210 kg of water at 33 °C in a 0.120-kg aluminum calorimeter cup, what is the final temperature of the water? ΜΕ ΑΣΦ 0 T = Submit Request Answer °C
- Part A A 12m x 13m house is built on a 12 cm -thick concrete slab. What is the heat-loss rate through the slab if the ground temperature is 4 °C while the interior of the house is 22 °C? Express your answer to two significant figures and include the appropriate units. O Value Units Submit Request AnswerThe basal metabolic rate is the rate at which energy is produced in the body when a person is at rest. A 75 kgkg (165 lblb) person of height 1.85 mm (6.07 ftft) would have a body surface area of approximately 2.00 m2m2. Part A What is the net amount of heat this person could radiate per second into a room at 17.0 ∘C∘C (about 62.6 ∘F∘F) if his skin's surface temperature is 31.0 ∘C∘C? (At such temperatures, nearly all the heat is infrared radiation, for which the body's emissivity is 1.0, regardless of the amount of pigment.) Express your answer with the appropriate units. HnetHnet = nothingnothing SubmitRequest Answer Part B Normally, 80%% of the energy produced by metabolism goes into heat, while the rest goes into things like pumping blood and repairing cells. Also normally, a person at rest can get rid of this excess heat just through radiation. Use your answer to part A to find this person's basal metabolic rate…The evaporation of sweat is an important mechanism for temperature control in some warm-blooded animals. Part A What mass of water must evaporate from the skin of a 67.5 kg man to cool his body 1.25 °C? The heat of vaporization of water at body temperature (37.0 °C) is 2.42 x 106 J/kg. The specific heat of a typical human body is 3480 J/(kg-K). Express your answer in kilograms to three significant figures. m = Submit Part B | ΓΑΣΦ V= Request Answer Submit What volume of water must the man drink replenish the evaporated water? Compare this result with the volume of a soft-drink can, which is 355 cm³ Express your answer in cubic centimeters to three significant figures. VI ΓΑΣΦ ? Request Answer kg ? cm³
- One end of an insulated metal rod is maintained at 100°C and the other end is maintained at 0.00°C by an ice-water mixture. The rod has a length of 65.0 cm and a cross-sectional area of 1.30 cm². The heat conducted by the rod melts a mass of 9.05 g of ice in a time of 15.0 min. Part A Find the thermal conductivity k of the metal. Express your answer in watts per meter-kelvin. V ΑΣΦ k= Submit Provide Feedback Request Answer ? W/(m. K)One end of an insulated metal rod is maintained at 100°C and the other end is maintained at 0.00° C by an ice-water mixture. The rod has a length of 70.0 cm and a cross- sectional area of 1.45 cm². The heat conducted by the rod melts a mass of 8.00 g of ice in a time of 10.0 min. Part A Find the thermal conductivity k of the metal. Express your answer in watts per meter-kelvin. —| ΑΣΦ k = Submit Previous Answers Request Answer Provide Feedback ? X Incorrect; Try Again; 5 attempts remaining W/(m. K)A 3.00 L tank contains air at 3.00 atm and 20.0° C. The tank is sealed and cooled until the pressure is 1.00 atm. Part A What is the temperature then in degrees Celsius? Assume that the volume of the tank is constant. Express your answer in degrees Celsius. T = Submit Part B V = ΑΣΦ Submit Request Answer If the temperature is kept at the value found in part A and the gas is compressed, what is the volume when the F Express your answer with the appropriate units. μA Value Request Answer Units ≈ ? ? O
- Cons The value of specific heat for copper is 390 J/kg · C°, for aluminun is 900 J/kg · C°, and for water is 4186 J/kg · C°. Part A What will be the equilibrium temperature when a 265 g block of copper at 255 °C is placed in a 145 g aluminum calorimeter cup containing 875 g of water at 15.0 °C? Express your answer using three significant figures. να ΑΣφ T = °C %3DThe height of the Eiffel tower is 324 m, and let's assume it's made completely of steel, which has a thermal coefficient of 1.20 × 10-5/°C. a. How much taller, in meters, does the Eiffel Tower become at the end of a day when the temperature has increased by 17.5°C?It is a hot summer day and you want to make some iced tea for you and your friends. Iced tea is made by adding ice to 1.8 kg of hot tea. The hot tea is initially at 65°C. 1.2 kg of ice, initially at -15°C, is placed in the tea and allowed to come to thermal equilibrium inside a large, well-insulated thermos. You can assume the hot tea is essentially all water. ▼ Part A How many Joules are required to change the 1.2 kg of ice at -15°C completely into water at 0°C? (Note this is a positive value) 4.34×105 Joules Submit Previous Answers ✓ Correct Correct answer is shown. Your answer 433800 Joules was either rounded differently or used a different number of significant figures than required for this part. ▼ Part B What is the final temperature (in Celsius) of this hot tea/ ice mixture as it is allowed to come to thermal equilibrium in the large, well-insulated thermos? [V-| ΑΣΦ | ? Celsius Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining