Q2.2 A copper piece has a mass of 50,0 g and is initially at a temperature of 20.0°C. If it is supplied with 300 J of heat, what will be its final temperature? [specific heat of copper c= 386 J/kg. "C]
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![Q2.2 A copper piece has a mass of 50,0 g and is initially at a temperature of 20.0 °C. If
it is supplied with 300 J of heat, what will be its final temperature? [specific heat of
copper c= 386 J/kg. "C]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffb7687e0-ba3b-4827-8d9f-27a907a5e4f5%2F2b2ea733-4e19-4273-8465-de35f2a44273%2Fs9p37ws_processed.jpeg&w=3840&q=75)
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- 4.4.85 Question Help ▼ A person knows that to get well-done beef, it should be brought to a temperature of 172°F. He placed a sirloin tip roast with a temperature of 35°F in an oven with a temperature of 328°F and after 3 hours the temperature of the roast was 139°F. How much longer must the roast be in the oven to get it well done? If the oven temperature is set at 172°F, how long will it take to get the roast well done? Hint: The difference between the roast temperature and the oven temperature decreases exponentially. me k How much longer will it take to get the roast well done with an oven temperature of 328°? Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. -Tests an O A. The roast must be in the oven hour minutes longer. (Round to the nearest whole number as needed.) pok O B. The roast will never get well done. r Contents at Success for Success media Library hase Options rse Tools Click to select and enter your answer(s) and…4. 100.0 g of 4.0°C water is heated until its temperature is 37°C. If the specific heat of water is 4180J/kg°C, calculate the amount of heat energy needed to cause this rise in temperature. 5. A 0.3 kg piece of copper is heated and fashioned into a bracelet. The amount of energy transferredby heat to the copper is 66,300 J. If the specific heat of copper is 390 J/kg celcius, what is the change of thecopper's temperature?A container holds 1.8 kg of ice at -15.0 degree C. (mass of the container can be ignored) Heat begins to be supplied to the container at a constant rate of 600 J/min. The specific heat of ice water is 2010 J/(kg K), and the latent heat of melting is 334000 J/kg. How many mins. until ice begins to melt? How many additional mins will it take until the ice has fully melted?
- 1. Express the product of 0.724 and 0.1 following the rules for significant figures. a. 0.1 b. 0.0724 c. 0.072 d. 0.07 2. An object is immersed in water inside a beaker initially are at toom temperature of 30 degrees Celsius. By the addition of heat, the temperature of the mixture reaches 95 degrees Celsius. Find the change in temperature of the mixture. a. 95 degrees Celsius b. 65 degrees Celsius c. 60 degrees Celsius d. 30 degrees Celsius 3. The lowest temperature recorded in northern hemisphere is -90 degrees Fahrenheit in Siberia, Russia. Find the temperature in Kelvin scales. a. 205 K b. 5 K c. 217 K d. 326 K23.0 g of copper pellets are removed from a 300 degree C oven and immediately dropped into 100 ml of water at 25 degree C in an insulated cup . what will the new water temperature be? express answer in degree CProblems - Examples Q3) Example 1.7: Page 25 Suppose you pour 0.250 kg of 20°C water into a 0.500-kg aluminum pan with a temperature of 150°C. Assume no heat transfer takes place to anything else: What is the temperature when the water and pan reach thermal equilibrium? (specific heat of aluminum is 900 J/kg. °C) PAGE 23 PAGE 23
- An insulated beaker with negligible mass contains liquid water with a mass of 0.235 kg and a temperature of 72.2 °C. ▼ Part A How much ice at a temperature of -21.4 °C must be dropped into the water so that the final temperature of the system will be 32.0 °C ? Take the specific heat of liquid water to be 4190 J/kg. K, the specific heat of ice to be 2100 J/kg. K, and the heat of fusion for water to be 3.34x105 J/kg . ► View Available Hint(s) mice = 0.096 Submit VE ΑΣΦ Provide Feedback Previous Answers www X Incorrect; Try Again; 5 attempts remaining kg Next >1 At 0° C, an aluminium rod and a copper rod have the same length of 1.25 m to what temperature must they be heated to differ in length by 0.075 mm?A 72° object is placed into a 3272º furnace and it takes 10 minutes for it to reach 1000 (Recall, T = TR + D, ekt) a. Find the equation that models the temperature at a given time. b. How long does it take for the object to reach 2552°?
- The mass of an object is 0.201 kg. The object requires 15.0 J of heat to raise its temperature by 283 K. What is the specific heat of the object? A. 3.78 J/kg ∙ K B. 0.52 J/kg ∙ K C. 0.26 J/kg ∙ K D. 0.00110 J/kg ∙ K. A long-distance runner has an average speed of 4 m/s during a race. How far does the runner travel in 20 mm?2. Awheel rotates 18 degrees in 20 milliseconds. How many revolutions per minute (RPM) is this? 3. Afiuid is held at 75 degrees Fahrenheit, what is the temperature in Celsius and Kelvin?