A thermometer reading 100 ºF is placed in a medium having a constant temperature of 70 ºF. After 6 minutes, the thermometer reads 80 ºF. What is the reading after 20 min?
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- At 25.0 m below the surface of the sea, where the temperature is 5.00C, a diver exhales an air bubble having a volume of 1.00 cm3. If the surface temperature of the sea is 20.0C, what is the volume of the bubble just before it breaks the surface?A Styrofoam box has a surface area of 0.9 m2 and a wall thickness of 1.8 cm. The temperature of the inner surface is 6.6°C, and the outside temperature is 24°C. If it takes 7.7 h for 8 kg of ice to melt in the container, determine the thermal conductivity of the Styrofoam. Final answer in three decimal places. For water, Lf = 334 000 J/ kg.A 900 g copper rod at 20 degrees celcius has a length of 1.0000 m. The thermal expansion coefficient of copper is 17 x 10^-6 degrees celcius -1. The specific heat capacity is 0.385 kJ/kg degrees celcius. Question A: The copper is heated to 400 degrees celcius. What is the new length? Give the answer in meters and with 4 digits of precision after the decimal. Question B: The hot copper is then quenched by dunking the entire rod in a bucket with 10 kg of water at 20 degrees celcius. The specific heat capaciy of water is 4.18 kJ/kg degrees celcius. If none of the water turns to steam what is the equilibrium temp of the copper rod and water? Please give the answer in degrees celcius Question C: You measure the equilbrium temp and find that it is 24 degrees celcius. If the latent heat of vaporization of water is 2,260 kJ/kg, what mass of water turned to steam? Answer in grams
- An aluminum can is filled to the brim with a liquid. The can and the liquid are heated so their temperatures change by the same amount. The can's initial volume at 15 °C is 4.5×10- 4 m3 . The coefficient of volume expansion for aluminum is 69×10-6 °C-1 . When the can and the liquid are heated to 75 °C, 2.9×10-6 m3 of liquid spills over. What is the coefficient of volume expansion of the liquid?An underground gasoline tank can hold 1.00 x103 gallons of gasoline at 52.0°F. If the tank is being filled on a day when the outdoor temperature (and the gasoline in a tanker truck) is 95.0°F, how many gallons from the truck can be poured into the tank? Assume the temperature of the gasoline quickly cools from 95.0°F to 52.0°F upon entering the tank.A surveyor uses a steel measuring tape that is exactly 75000 m long at a temperature of 20 degrees Celsius. What is the length (in m) of the tape when the temperature is 35 degrees Celsius? (xsteel = 1.2x10-5/K). The answer (in fundamental SI unit) is ______. (type the numerical value only)
- Luis and Salman are trying to increase the temperature of a substance by heating it. . What is the quantity of heat in kilojoules required to raise the temperature of 1.2 kg of the substance from3°C to 110 °C at a pressure of 1.0 atm? Please keep three significant figures. Useful information: Melting point = 293 K heat of fusion = 3.90 x 104 J/kg. boiling point is 423 K heat of vaporization 7.80 x 104 J/kg (at a pressure of 1.0 atm). The specific heats for the solid phase is 600 J/(kg K) The specific heats for the liquid phase is 1000 J/(kg K) The specific heats for the gaseous phase is 400 J/(kg K)A particular pair of human lungs have a volume of 2.5 L when inflated. At this volume, the temperature inside the lungs is 97.9°F. If the temperature of the air outside the lung is 44.8°F, what volume of cooler outside air is being inhaled and warmed?Luis and Salman are trying to increase the temperature of a substance by heating it.. What is the quantity of heat in kilojoules required to raise the temperature of 3.2 kg of the substance from1° C to 115 °C at a pressure of 1.0 atm? Please keep three significant figures. Useful information: Melting point = 293 K heat of fusion =3.90 x 104 J/kg. boiling point is 423 K heat of vaporization 7.80 x 104 J/kg (at a pressure of 1.0 atm). The specific heats for the solid phase is 600 J/(kg K) The specific heats for the liquid phase is 1000 J/(kg K) The specific heats for the gaseous phase is 400 J/(kg K) 339.2 20 F3 4 900 F4 % 5 F5 A 6 tv Ni MacBook Air F6 7 F7 * F8 A 9
- The cubit is an ancient unit of measurement for length, where 1 cubit is approximately 444.25 mm. A cubic cubit (cubit3) is a measurement of volume. You have a steel container completely filled with gasoline. How many cubic cubits will spill out of the 22.8 cubits3container when the temperature is raised from 26.1 °C to 79.4 °C ?A Styrofoam box has a surface area of 0.84 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 26°C. If it takes 8.0h for 5.0 kg of ice to melt in the container, determine the thermal conductivity of the Styrofoam.A slice of bread contains about 4.19 x 105 J of energy. If the specific heat of a person is 4.19 x 103 J/kgCo, how many degrees Celsius would the temperature of a 70 kg person increase if all the energy in the bread were converted to heat? Group of answer choices 1.33 1.43 C 3.66 1.53 2.55 C