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A person sitting in front of a room heater feels hot. Define the process by which heat is transferred?
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A person sitting in front of a room heater feels hot. Define the proce...
Heat Transfer Process
Heat transfer is the process of exchanging thermal energy between two systems or objects. There are three main ways in which heat can be transferred: conduction, convection, and radiation.
Conduction
Conduction is the transfer of heat through a material without any movement of the material. In other words, heat is transferred through a substance by the transfer of energy from one molecule to another. For example, when you touch a hot stove, heat is transferred from the stove to your hand through conduction.
Convection
Convection is the transfer of heat through a fluid (such as air or water) by the movement of the fluid itself. This occurs because warmer fluids rise while cooler fluids sink. For example, when you boil water on a stove, the heat is transferred from the stove to the water through conduction, and then the hot water rises to the top of the pot, transferring heat to the air around it through convection.
Radiation
Radiation is the transfer of heat through electromagnetic waves. This occurs without any physical contact between the two objects. For example, the heat from the sun reaches the Earth through radiation.
Application to Room Heater
In the case of a room heater, the heat is transferred through a combination of conduction and radiation. The heater warms up the air around it through conduction, and then the warm air rises and circulates around the room through convection. Additionally, the heater emits infrared radiation, which is absorbed by objects in the room (including the person sitting in front of it) and warms them up.
Overall, heat transfer is a fundamental concept in thermodynamics and is essential to our understanding of how energy moves and changes form in the world around us.
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A person sitting in front of a room heater feels hot. Define the proce...
Radiation
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A person sitting in front of a room heater feels hot. Define the process by which heat is transferred?
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A person sitting in front of a room heater feels hot. Define the process by which heat is transferred? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about A person sitting in front of a room heater feels hot. Define the process by which heat is transferred? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A person sitting in front of a room heater feels hot. Define the process by which heat is transferred?.
A person sitting in front of a room heater feels hot. Define the process by which heat is transferred? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about A person sitting in front of a room heater feels hot. Define the process by which heat is transferred? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A person sitting in front of a room heater feels hot. Define the process by which heat is transferred?.
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