You hold a 65°C cup of cocoa. Your hand is 37°C and the outside air is 6°C. What is the flow of thermal energy?

Q: In a vacuum, heat can be transferred by: a) conduction and convection b) convection and radiation c)…

A: In a vacuum, heat can be transferred by:a) conduction and convectionb) convection and radiationc)…

Q: Two blocks of copper, one of mass 1 kg and the second of mass 3 kg, are at the same temperature.…

A: Using the thermal energy equation, The thermal energy is proportional to the mass Here, both the…

Q: Two objects with different sizes, masses, and temperatures are placed in thermal contact. Choose the…

A: Two objects with different sizes, masses, and temperatures are placed in thermal contact.

Q: A quantity of water is heated from 25.0 Degrees Celsius to 36.4 Degrees Celsius by absorbing 325…

A: Given data: Final temperature of water is, T2=36.4∘C. Initial temperature of water is, T1=25.0∘C.…

Q: I have 500g of water at 25oC. If the amount of heat required to raise the temperature of this water…

A: Given data:Mass of the water, m = 500 g = 0.5 kgThe specific heat of water, C = 4.186 joule/gram…

Q: What information did you have to look up in order to answer your question? How high would I have to…

A: When landing on the earth surface potential energy is converted into heat energy as energy can not…

Q: When a driver brakes an automobile, the friction between the brake drums and the brake shoes…

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Q: A student is trying to decide what to wear. His bedroom is at 20.0°C. His skin temperature is…

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Q: A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it…

A: To find by what ways does coffee on a table loses heat.

Q: 15) Which one of the following quantities is the smallest unit of heat energy? D) Btu A) joule B)…

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Q: How many joules of heat is required from the environment to warm up a 81kg human from the…

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Q: . A bullet of mass 10 g moving with speed of 210 m/s in stopped suddenly. If all its kinetic energy…

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Q: Which sample of water has the most thermal energy? O A. A 0.5 kg sample at 1°C O B. A 1.5 kg sample…

A: Heat depends on the mass, specific heat and temperature.

Q: A 0.5 kg copper sphere is at a temperature of 280 oK. It is heated using 25 kJ of heat energy. What…

A: Given: mass of copper sphere m=0.5 kg initial temperature Ti = 280 K heat energy Q = 25 KJ = 25*1000…

Q: An electric kettle raises the temperature of tea from 50 °C to 125 °C with the usage of 15000 J of…

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Q: 00 You can touch the aluminum pan after it has been taken from the hot oven, but you'll burn your…

A: Aluminium has a low heat capacity so transferring a small amount of energy lowers the temperature of…

Q: A bullet of mass 10 g moving with speed of 210 m/s in stopped suddenly. If all its kinetic energy is…

A: Given data :- m = 10 g = 0.01 kg v = 210 m/s

Q: A chef is kneading dough in his 21°C kitchen. The dough is placed on a 0.4mx0.6m aluminum cookie…

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Q: One ounce of a well-known breakfast cereal contains 99 Calories (1 food Calorie = 4186 J). If 2.4%…

A: In this case, 2.4 % of the potential energy converted. U=2.4%Q=0.024 Q   The expression for the…

Q: A 10 Kg lead brick is dropped from the top of a 629 m tall television transmitting tower in North…

A: The given values with suitable variables are listed below. Here, m denotes the mass and h denotes…

Q: When someone has a fever, his or her body temperature might increase by as much as 2°C. Suppose this…

A: The given values are, ΔT=2° Cm=48 kg

Q: The room heater has surface area of 2.0 m^2 and there is circulating hot water 50 g/s. Water is…

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Q: 7.  The zeroth law of thermodynamics relates to: three objects with different heat energy three…

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Q: A student is trying to decide what to wear.His bedroom is at 20.0 degrees Celcius.His skin…

A: The net rate of transfer of energy from the skin is

Q: What is the temperature of the bottom surface of the kettle? Thermal conductivity of stainless steel…

A: Given information:The diameter of the kettle bottom (d) = 26 cm = 0.26 mThe radius of the kettle is…

Q: 2.) A bar of 20.0 grams of aluminum of specific heat 0.215 cal/gramCo is heated from 15.0 Co to 20.0…

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Q: What happens when hot materials begin to cool? Hot materials begin to cool as _. A.)cold air is…

A: Given:-  What happens when hot materials begin to cool? Hot materials begin to cool as Find:-…

Q: Some amount of heat energy is removed from a 11cm X 14cm X 10cm block of ice to cool from 0ºC to…

A: Given that-- Some amount of heat energy is removed from a 11cm X 14cm X 10cm block of ice to cool…

Q: The ship is launched down a ramp and drops a total of 10 vertical meters [m] before coming to rest…

A: Here we use the law of conservation of energy. Energy lost by boat = Energy gained by water

Q: When a driver brakes an automobile, the friction between the brake drums and the brake shoes…

A: Given:-                  To calculate the initial kinetic energy of car is:…

Q: Which of the following indicates a heat transfer?   Question 15 options:   constant temperature…

A: Heat transfer: Heat transfer is a process of energy transfer from one place to another place due to…

Q: A bullet of mass 10 g moving with speed of 210 m/s in stopped suddenly. If all its kinetic energy is…

A:

Q: How much heat energy is required to raise 3.97 g of aluminum by 17.0 K? A. 0.23 J B. 73 J C. 62 J…

A: Given data :- mass of aluminum m = 3.97 g change in temperature ∆T = 17 K  = 17 °C

Q: The Icelandic waterfall, Glymur, is 198 metres high. Imagine a world where all the gravitational…

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Q: A 5.0kg pan of water has an initial temperature of 15 degrees Celsius to bring to a boil.  How much…

A: The mass of pan of water (m),

Q: A student tries to decide what to wear. His room is at 20˚C. Its skin temperature is 35˚C. The area…

A:

Q: A 11 m ×13m house is built on a 13 cm -thick concrete slab. What is the heat-loss rate through the…

A: ∆Q∆t=kAT2-T1L Thermal conductivity of concrete is 0.8 W/m.

Q: An eagle that flies at an average speed of 10.7 m/s and uses its body fat reserves at an average…

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Q: A 2 kg block of metal with a specific heat of 100 J/kgºC is dropped from rest at a height of 100 m…

A: let g ≃ 9.8 m/s2mass of block m = 2 k.g.specific heat c = 100 J/kg °cHeight H = 100 mHalf of initial…

Q: A 0.422 g food sample is used to raise the temperature of 14.656 g of water by 45.2 celsius. How…

A: Given data *The given mass of the food is m = 0.422g *The mass of water is M = 14.656 g = 0.014656…

Q: Which of the following diagrams correctly illustrates the movement of thermal energy between metal…

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Q: You stand on top of a skyscraper and drop a rubber ball from a height of 163 m. As the ball bounces…

A: Given Information: The initial height of the ball (h) = 163 m The Specific heat of the rubber by…

Q: What are the following temperatures on the Kelvinscale?(a) 68.0 °F, an indoor temperature…

A: The temperature in Celsius scale can be obtained as TC=59TF-32=5968.0°F-32=20°C Now, the temperature…

Q: body

A: Given: The temperature of the child = 340 C Outside temperature = 1.50 C Emissivity of child skin =…

Q: A student is trying to decide what to wear. His bedroom is at 20°C. His skin temperature is 35°C.…

A: We have to convert temperature in to k K=°C+273

Q: One calorie is defined as:     A. the SI unit for thermal energy   B. One thermal energy unit…

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Q: The temperature of the air in thermals decreases about 10°C for each 1,000 m they rise. If a thermal…

A: Relative humidity, RH=77%   The temperature, T=35°C

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.