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Aliens from the planet Jeenkah have based their temperature scale on the freezing and boiling
temperatures of ethyl alcohol. These temperatures (in degrees Celsius) are 114C and 78C, respectively.
The Aliens choose J as their temperature unit, and decided to allocate 144J to the temperature difference
between the freezing and boiling points of ethyl alcohol and to let 0J be the freezing point of ethyl
alcohol. A healthy person has an oral temperature of 37C. What would this temperature be on the planet
Jeenkah in J.
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- You are put on a wool sweater of approximately 1.5 kg, because it is around 30 °F outside. The wool sweater was initially around room temperature of about 75 °F. It takes about 1.47 J of energy for the sweater to go from room temperature to the temperature outside. What is the specific heat capacity of the sweater? Please express the specific heat capacity in the unit of joules/kg.degrees CelsiusA ceramic container used for melting metals (called a crucible) contains 1.30 kg of a molten metal. The liquid metal cools until it reaches its melting point of 1,749°C. A scientist then measures that 2.99 ✕ 104 J of heat is transferred out of the metal before it completely solidifies. What is the latent heat of fusion of this metal, in J/g? (Be careful with units!)A sample of ideal gas is in a sealed container. The pressure of the gas is 325 torr , and the temperature is 14 °C. If the temperature changes to 81 °C with no change in volume or amount of gas, what is the new pressure, P, of the gas inside the container?
- A bottle of soda pop at room temperature (72°F) is placed in a refrigerator where the temperature is 44°F. After half an hour the soda pop has cooled to 61°F. What is the temperature of the soda pop after another half hour? How long does it take for the soda pop to cool to 50°F? Ans: 54°F, 1 hour 33 minutesLuis 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)Muffins are taken out of the oven with a temperature of 200°F and are placed on a cooling rack with a room temperature of 70°F. After 15 minutes, the muffins have cooled to 170°F. If it is recommended to wait 30 minutes before eating, what temperature would the muffins be? Round the value of k to the nearest fourth decimal place.
- A particular pair of human lungs have a volume of 1.8 L when inflated. At this volume, the temperature inside the lungs is 98.7°F. If the temperature of the air outside the lung is 43.2°F, what volume of cooler outside air is being inhaled and warmed? Round your answer to 2 decimal places.A cylinder of gas at room temperature (20°C) has a pressure p1. To what temperature in degrees Celsius would the temperature have to be increased for the pressure to be 1.2p1?A person taking a reading of the temperature in a freezer in Celsius makes two mistakes: first omitting the negative sign and then thinking the temperature is Fahrenheit. That is, the person reads – x °C as x °F . Oddly enough, the result is the correct Fahrenheit temperature. What is the original Celsius reading? Round your answer to three significant figures.
- 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 9At 10:30 AM, detectives discover a dead body in a room and measure its temperature at 27°C. One hour later, the body's temperature had dropped to 24.8°C. Determine how many hours had passed since the death occured (when the body temperature was a normal 37°C), by the time the body was discovered, assuming that the temperature in the room was held constant at 14°C. (Use decimal notation. Give your answer to one decimal place. Round any intermediate calculations, if needed, to no less than three decimal places.) the number of hours:A patient has an illness that typically lasts about 24 hours. The temperature, T, in degrees Fahrenheit, of the patient t hours after the illness begins is given by: T(t) = -0.012t² +0.3t +98.7. Use your calculator to graph the function and answer the following questions. Round all answers to 1 decimal place. When does the patient's temperature reach it maximum value? Answer: After hours What is the patient's maximum temperature during the illness? Answer: