Two identical metal rods of rectangular cross-section are welded end-to-end as shown in pa of the figure below. 10 J of heat flows through the rods in 2 min. How long would it take f to flow through the rods if they were welded as shown in panel (b) of the figure below? 0 °C (a) 100 °C
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- 1000 800 600 400 200 10 20 30 40 50 60 70 80 90 -200 400 Time in seconds Look at the graph above. How much did the temperature change from t = 30 to t = 60 seconds? %3D AT = unit Select an answer v This substance has a specific heat of 0.13 cal/g°C. If you have 34 grams of this substance, how much heat was added from t = 30 to t = 60 seconds? Q = unit Select an answer v Temperature In CI need help with this questionYou must use the Method of Mixtures to solve the problem. You must state which substances lose heat and which gain heat at the start of your work. Twelve ounces of copper at 300 degrees Fahrenheit and four ounces of zinc at 200 degrees Fahrenheit are placed in a brass container of water. The eight-ounce brass container is at 50 degrees Fahrenheit. The water is also at 50 degrees Fahrenheit. The final temperature of the mixture is 62.63736264 degrees Fahrenheit. The specific heat of copper is 0.092 Btu/lb oF The specific heat of zinc is 0.092 Btu/lb oF The specific heat of brass is 0.092 Btu/lb oF The specific heat of (liquid) water is 1.00 Btu/lb oFWhat amount of water was in the brass container? No round off until final answer
- When a 270-g piece of iron at 160 °C is placed in a 95-g aluminum calorimeter cup containing 250 g of liquid at 10° C, the final temperature is observed to be 35 °C. The value of specific heat for iron is 450 J/kg·C°, and for aluminum is 900 J/kg · C°. Part A Determine the specific heat of the liquid. Express your answer using two significant figures. VO AE ? J C = kg-C° Submit Request AnswerHow much energy is required to raise the temperature of 0.2 kg of water from 120.°C to 80.°C? Answer in J. (What equation/ method should I use to solve this? Must I also convert the temperature to Kelvin if I'm not mistaken?)Temperature & Heat 13. At 30 °C the volume of an aluminum sphere is 30 cm³. The coefficient of linear expansion is 24 x 10 C¹. If the final volume is 30.5 cm³, what is the final temperature of the aluminum sphere? Assume B = 3 a 14. A 500-gram cube of lead is heated from 25 °C to 75 °C. How much energy was required to heat the lead? The specific heat of lead is 0.129 J/g-°C. 15. How much heat is required to convert 135 g of ice at -15 °C into water vapor at 120 °C? (Assume c of steam = 1.996 J/g-°C, c of water = 4.1858 J/g-°C, c of ice =2.090 J/g-°C. Lv of water = 540 cal/g & Lf of water = 80 cal/g)
- I need typing clear urjent⦁ When a certain quantity of helium gas contained inside and engine cylinder combusts, the expanding gas causes the 12-cm-radius piston to move outward by 10.0 cm. If the gas remains at a pressure of 120 kPa for this process, what is the heat transfer? (See the diagram at the top of the next page.)⦁ 1,960 J⦁ 1,660 J⦁ 1,360 J⦁ 1,060 J⦁ 760 J0.4 kg water is at room temperature 23 degrees in an aluminum container. An unknown metal with 0.5 kg mass is placed inside the water raising its temperature to 40 degrees. A)What is the specific heat of the unknown metal. B) Would the equilibrium temperature greater, less or the same if the system was not properly isolated.