Class 9 Exam > Class 9 Questions > Our hands become warm when rubbed against eac...
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Our hands become warm when rubbed against each other. This is because
- a)mechanical energy is converted into heat energy
- b)K. E is converted into heat energy
- c)chemical energy is converted into heat energy
- d)none of these
Correct answer is option 'B'. Can you explain this answer?
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Our hands become warm when rubbed against each other. This is becausea...
Our hands become warm when rubbed against each other. This is because kinetic energy is converted into heat energy due to friction between palms.
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Our hands become warm when rubbed against each other. This is becausea...
Explanation:
Introduction:
When we rub our hands against each other, they become warm. This change in temperature is due to the conversion of kinetic energy into heat energy.
Kinetic Energy:
Kinetic energy is the energy possessed by an object due to its motion. When we rub our hands together, we apply a force and create friction between the surfaces of our hands. This force causes the molecules in our hands to move, resulting in an increase in their kinetic energy.
Friction:
Friction is the force that opposes the relative motion between two surfaces in contact. When we rub our hands together, the rough surfaces of our skin come into contact and slide past each other. This sliding motion creates friction between the surfaces.
Conversion of Kinetic Energy into Heat Energy:
When we rub our hands together, the kinetic energy of the moving molecules is converted into heat energy. This conversion occurs due to the resistance provided by friction. As the molecules move and experience friction, they collide with each other and transfer energy in the form of heat.
Heat Energy:
Heat energy is the energy transferred from one object to another due to a difference in temperature. When we rub our hands together, the friction between the surfaces generates heat energy. This heat energy is transferred to our hands, causing them to feel warm.
Conclusion:
In conclusion, when we rub our hands together, the kinetic energy of the moving molecules is converted into heat energy due to the friction between the surfaces. This conversion of energy is the reason our hands become warm when rubbed against each other.
Introduction:
When we rub our hands against each other, they become warm. This change in temperature is due to the conversion of kinetic energy into heat energy.
Kinetic Energy:
Kinetic energy is the energy possessed by an object due to its motion. When we rub our hands together, we apply a force and create friction between the surfaces of our hands. This force causes the molecules in our hands to move, resulting in an increase in their kinetic energy.
Friction:
Friction is the force that opposes the relative motion between two surfaces in contact. When we rub our hands together, the rough surfaces of our skin come into contact and slide past each other. This sliding motion creates friction between the surfaces.
Conversion of Kinetic Energy into Heat Energy:
When we rub our hands together, the kinetic energy of the moving molecules is converted into heat energy. This conversion occurs due to the resistance provided by friction. As the molecules move and experience friction, they collide with each other and transfer energy in the form of heat.
Heat Energy:
Heat energy is the energy transferred from one object to another due to a difference in temperature. When we rub our hands together, the friction between the surfaces generates heat energy. This heat energy is transferred to our hands, causing them to feel warm.
Conclusion:
In conclusion, when we rub our hands together, the kinetic energy of the moving molecules is converted into heat energy due to the friction between the surfaces. This conversion of energy is the reason our hands become warm when rubbed against each other.
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Our hands become warm when rubbed against each other. This is becausea)mechanical energy is converted into heat energyb)K. E is converted into heat energyc)chemical energy is converted into heat energyd)none of theseCorrect answer is option 'B'. Can you explain this answer?
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Our hands become warm when rubbed against each other. This is becausea)mechanical energy is converted into heat energyb)K. E is converted into heat energyc)chemical energy is converted into heat energyd)none of theseCorrect answer is option 'B'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Our hands become warm when rubbed against each other. This is becausea)mechanical energy is converted into heat energyb)K. E is converted into heat energyc)chemical energy is converted into heat energyd)none of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Our hands become warm when rubbed against each other. This is becausea)mechanical energy is converted into heat energyb)K. E is converted into heat energyc)chemical energy is converted into heat energyd)none of theseCorrect answer is option 'B'. Can you explain this answer?.
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