The same heat transfer into identical masses of different substances produces different temperature changes. Calculate the final temperatures when 1 kcal of heat transfers into 1.5 kg of the following, originally at 21 C. Hint a. Into water: the final temperature of water is °C. b. Into concrete: the final temperature of concrete is °C. c. Into steel: the final temperature of steel is C. d. Into mercury: the final temperature of mercury is C.

The same heat transfer into identical masses of different substances produces different temperature changes. Calculate the final temperatures when 1 kcal of heat transfers into 1.5 kg of the following, originally at 21 C. Hint a. Into water: the final temperature of water is °C. b. Into concrete: the final temperature of concrete is °C. c. Into steel: the final temperature of steel is C. d. Into mercury: the final temperature of mercury is C.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

6. Two students place three ice cubes in a glass of water that was at a room temperature. Which of the following scenarios would best describe the result of the investigation? A. Energy from the water will transfer to the ice cubes, causing the ice to melt. B. Cold from the ice cubes will transfer to the water, causing the water to cool. C. The ice cubes will melt due to the external heat. D. The water will have no reaction on the ice cubes even wvhen it melts. 7. A student decides to take up diving as a hobby. He stands on a high-dive that is 4m tall. If the student has a mass of 50 kg, what is his potential energy (PE)? C. 1890 J D. 2130 J A. 200 J B. 1960 J 8. A solar calculator has to have light in order to work. What does the radiant energy transform into? A. radiant B. solar C. potential D. chemical 9. What would happen if a net force is acting on an object? A. its velocity must be constant B. its velocity must be changing C. its mass must be changing D. its acceleration is zero
The same heat transfer into identical masses of different substances produces different temperature changes. Calculate the final temperature in degrees Celsius when 1.00 kcal of heat enters 1.00 kg of the following, originally at 22.5°C. 1. water 2. concrete 3. steel 4. mercury
If the temperature of the surface of the object is 648.5 K, then calculate its value in °F. a. 375.50 b. 707.90 c. 1626.70 d. 1199.30
4. Heat up the water to 100°C and the iron to 160°C. Then, put the iron in the boiling water. What happens to their temperature eventually? The iron which had the higher temperature goes down quickly to same temperature as the water and achieved a thermal equilibrium at 100°C. In real situation the water will evaporate faster as it quickly cools down the iron as because the water already achieved its boiling point. 5. Define what thermal equilibrium is and explain its connection to question No. 4.
How does the rate of heat transfer by conduction change when all spatial dimensions are tripled?
Energy in Thermal Processes Multiple choices 1-5
4. When you boil water in a pot on the stove, which heats faster, the metal or the water? Explain. 5. Why do you think different substances heat up and cool down at different rates? 6. Based on the definition above, which of the 4 substances do you think has: a) the highest specific heat capacity? b) the lowest heat capacity? 7. Here are the heat capacities of the four substances: 4.18 J/g °c, 1.00 J/g °c, 0.80 J/g °c, and 0.60 J/g °c. Match and then label each substance with its specific heat capacity on the graph.
Which of the following best describes a substance in which the tempeture remains constant while at the same time it is experiencing an inward heat flow? A. Substance undergoing a change of state B. every substance undergoes a change in tempeture when heat is given to it C. solid D. gas E. liquid
2. A bowl of water has a temperature of 50°C. It is put into a refrigerator where the temperature is 5°C. After 0.5 hours, the water is stirred and its temperature is measured to be 20°C. It is then left to cool further, take t in Newton's law of cooling to be measured in minutes. Use Newton's law of cooling to predict when the temperature will be 50°C.
The sun generates 2kW /m² when used as a source for solar collectors. A collector with an area of 1m2 heat water. The flow rate is 4.0 liters per minute. What is the 8. temperature rise in the water? The specific heat of water is 4200- kg-°C 9. The mechanical equivalent of heat is a. Btu b. calorie С. Joule d. Specific heat
8. How many calories of heat are in 20.0 joules? a. 83.7 calories b. 4.78 calories c. 20.0 calories d. 14.5 calories e. 0.209 calories
On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because: A. metals have higher thermal capacity than plastics B. plastics have a lower density than metals C. metals are good conductor of heat D. plastics have a higher thermal conductivity than metals