An insulated Thermos contains 100 cm³ of hot coffee at 84.0°C. You put in a 11.0 g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg-K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm³. Number i 40.738 Units Cº

An insulated Thermos contains 100 cm³ of hot coffee at 84.0°C. You put in a 11.0 g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg-K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm³. Number i 40.738 Units Cº

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 95P: (a) What is the rate of heat conduction through the 3.00-cm-thick fur of a large animal having a I...

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(a) What is the rate of heat conduction through the 3.00-cm-thick fur of a large animal having a I .40-m surface area? Assume that the animal's skin temperature is 32.0 , that the air temperature is 5.00 , and that has the same thermal conductivity as air. (b) What food intake will the animal need in one day to replace this heat transfer?
(a) If the partial pressure of water vapor is 8.05 torr, what is the dew point? (760 torr = I atm 101, 325 Pa) (b) On a warn day when the air temperature is 35 and the dew point is 25 , what are the partial of the water in the air and the relative humidity?
One easy way to reduce heating (and cooling) costs is to add extra insulation in the attic of a house. Suppose a single-story cubical house already had 15 cm of fiberglass insulation in the attic and in all the exterior surfaces. If you added an extra 8.0 cm of fiberglass to the attic, by what percentage would the heating cost of the house drop? Take the house to have dimensions 10 m by 15 m by 3.0 m. Ignore air infiltration and heat loss through windows and doors, and assume that the interior is uniformly at one temperature and the exterior is uniformly at another.
Your answer is partially correct. An insulated Thermos contains 190 cm3³ of hot coffee at 80.0°C. You put in a 12.0g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg-K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm³. Number 9.5 Units
Your answer is partially correct. An insulated Thermos contains 150 cm3 of hot coffee at 77.0°C. You put in a 17.0 g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg-K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm³. Number 7.846421347 Units C° Save for Later Attempts: 2 of 3 used Submit Answer
Your answer is partially correct. An insulated Thermos contains 130 cm3 of hot coffee at 88.0°C. You put in a 19.0 g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg-K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm³. Number i 52.11 Units C°
Your answer is partially correct. An insulated Thermos contains 120 cm³ of hot coffee at 78.0°C. You put in a 13.0 g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg.K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm³. Number Doing m ! attempte All Save for Later Last saved 7 hours ago. Saved work will be auto-submitted on the due date. Auto-submission can take up to 10 minutes. Units popro Cº Attempts: 2 of 5 used Submit Answer
A hot, just-minted copper coin is placed in 103 g of water to cool. The water temperature changes by 8.22°C and the temperature of the coin changes by 88.1°C. What is the mnss of the coin? Disregard any energy transfer to the water's surround- ings and assume the specific heat of copper is 387 J/kg- C. The specific heat of water is 4186 J/kg- C. Answer in units of g- O1. 122871 O 2. 128.638 O 3. 129.928 4. 116.608 5. 112./99 6. 139 655 8. 111.56 110.329 HO103.949
An insulated Thermos contains 140 cm³ of hot coffee at 89.0°C. You put in a 14.0 g ice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg.K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm³. Number Units
An insulated Thermos contains 180 cm of hot coffee at 82.0°C. You put in a 13.0 gice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg-K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm³. Number Units
A picture window has dimensions of 1.34 m by 2.65 m and is made of glass 5.93 mm thick. On a winter day, the outside temperature is -20°C, while the inside temperature is a comfortable 19.5°C. At what rate is heat being lost through the window by conduction? kglass = 0.80 W/m.K Round your answer to 2 decimal places.
An insulated Thermos contains 180 cm of hot coffee at 82.0°C. You put in a 13.0 gice cube at its melting point to cool the coffee. By how many degrees has your coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg-K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm. Number i 5.53 Units