Two objects, with different sizes, masses, and temperatures, are placed in thermal contact. In which direction does the energy travel? (a) Energy travels from the larger object to the smaller object. (b) Energy travels from the object with more mass to the one with less mass. (c) Energy travels from the object at higher temperature to the object at lower temperature.

Q: It takes 5000 J of energy to raise the temperature of a 1.5 kg sample of an unknown material by…

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Q: Three cubes are made from the same material. As the drawing indicates, they have different sizes and…

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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: The heat gained or lost by a body during a change of state is the product of its ______ and the…

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Q: A coffee-cup calorimeter contains 55.0 g of water at 25.90° C. If 4.21 g gold metal at 89.20° C is…

A: Given that  mw=55 g                    mg=4.21g                    Tw=25.90 o 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: 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: The type of heat transfer that happens through direct contact of molecules or particles with each…

A: The type of heat transfer that happens through direct contact of molecules or particles with each…

Q: When Jenny stepped from the grass onto the black asphalt she noticed that there was a distinct…

A: specific heat capacity is defined as the amount of heat required to raise the temperature of 1 gram…

Q: How much energy is required to increase the temperature of 25 g water from 0 C∘ to 50 C∘. The…

A: To determine: The amount of energy required to increase the temperature.   Given: Mass of water,…

Q: What three factors affect the heat transfer that is necessary to change an object’s temperature?

A: heat transfer

Q: A 10KW immersion heater is placed in a pot containing two liter of water at 23°C. How long will it…

A: Given : P = 10 kW = 10 × 103 W V = 2 L = 2 × 10-3 m3 T1 = 23°C T2 = 100°C e = 32% = 0.32 c = 4185…

Q: In a warm room a naked resting person has a skin temperature of 33°C if the room temperature is 29°…

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Q: How much thermal energy is absorbed by a 0.0220 kg ice cube as it melts? The latent heat of fusion…

A: Assume the ice is at melting point 0°C. The thermal energy absorbed by the ice as it melts is given…

Q: if 50 g of aluminum shot (c = 0.22) is heated to 100°C and dropped into 200 g of water at 20°C, the…

A: Given: The mass of the aluminum is 50 g. The initial temperature of the aluminum is 100oC. The…

Q: Object 1 has nine times the specific heat capacity and four times the mass of Object 2. The two…

A: Vv

Q: The heat of fusion of ice/water is 3.35x105 J/kg. How much energy is required to melt 50 grams (0.05…

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Q: A piece of copper whose mass is 15 kg has a specific heat capacity of 390 J/kg°C and is warmed by…

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Q: A 0.250-kg aluminum bowl holding 0.800 kg of soup at 25.0ºC is placed in a freezer. What is the…

A: Given: mass of aluminium,m= 0.250 kg  mass of soup,m' = 0.8 kg  initial temperature, T = 25 degree C…

Q: A bulb delivers 33 W of radiant energy when its filament is at 1900 °C. If the temperature increases…

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Q: In a laboratory, bunsen burner is used to increase the temperature of lime from 10 °C to 50 °C with…

A: given,T1=10 °CT2=50 °Cthermal energy Q=8000 Jmass, m=20 kg

Q: In the ball-and-spring atomic model for thermal expansion, the statement “More thermal energy means…

A: In ball-spring atomic model, the atoms (balls) are connected to each other with springs of spring…

Q: If 40 kcal of heat is added to 2.0 kg of water, what is the resulting temperature change?…

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Q: The amount of energy transferred between two objects is considered. O a. Joules O b. Thermal waste O…

A: Lets define few the terms first: Joule: is the unit of heat . So it can't be answer.

Q: Many objects, such as train tracks and road joints, are specifically designed to allow extra space…

A: Concept used is expansion with rise in temperature

Q: In Physics we can say that the term 'heat' can be phrased as the   A. temperature in an object. B.…

A: As we know heat is a form energy which can flow where there is difference of temperature between…

Q: On a winter day the temperature drops from - 5 degrees * C to - 25 degrees * C overnight . If a pan…

A: The amount of heat required to change the temperature is Q=mcΔT

Q: Q10- The process of transfer of heat in vacuum is called as a. Conduction b. Convection c.…

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Q: What will be the final temperature if 4.0x10^4 J of heat is transferred to a 1.5kg block of aluminum…

A: Given: Specific heat of aluminum = 9×102 J/kg.C° Initial temperature Ti = 15 °C Heat transferred =…

Q: Two objects of different temperatures are held so that they are in thermal contact with each other.…

A: Option c is correct Hot object transfers heat to cold object/cold object heats up/heat transferred…

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

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Q: A hot object in a cool room will lose heat by which of the following modes of heat transfer?…

A: Conduction is mode of tranfer of heat without any actual displacement of medium particle Convention…

Q: The same energy Q enters five different substances as heat. Which of these has the greatest specific…

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Q: A 70 kg student catches the flu, and his body temperature increases from 37.0°C 198.6°F2 to 39.0°C…

A: Mass of the student,   The initial temperature,   The final temperature,

Q: What is the rate of heat transfer by radiation from the skin of a person standing in a dark room…

A: Given that the value of ambient temperature and surface area and emissivity of skin and temperature…

Q: suppose a 50.0 g block of silver (specific heat = 0.2350 J/g·C) at 100C is placed in contact with a…

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Q: A chunk of nickel weighing 19.8 grams and originally at 98.72°C is dropped into an insulated cup…

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Q: A person is standing outdoors in the shade where the temperature is 33 °C. What is the radiant…

A: Solution       Given T = 33°                  e = 0.85

Q: A steam boiler is made of steel and weighs 900 kg. The boiler contains 400 kg of water Assuming that…

A: Given data: The mass of steel is ms=900 kg. The mass of water is mw=400 kg. The specific heat of…

Q: How much heat is required to raise the temperature of a 225 g lead ball from 15 °C to 25 °C? The…

A: Option C is the right answer  288 J

Q: If you use a metal pan for cooking, which of the following will not promote faster transfer of heat…

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Q: While running, you need to transfer 300 J/s of thermal energy from your body to the moisture on your…

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Q: If the heat capacity of a certain object of mass M is C, its specific heat is S, then: Select one: O…

A: Required : Relation between the heat capacity and specific heat capacity.

Q: The fact that desert sand is very hot in the day and very cold at night is evidence that sand has…

A: the desert sand is very hot in day and very cold at night.

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.