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Roy wants to make a list of actions that show friction produces heat. Which of the following could he include in his list?
(a) Rubbing hands together
(b) Scratching a match stick against the box
(c) Sawing wood
(d) Drilling a hole into metal sheet
(e) Rubbing off some pencil marks with an eraser
(a) Rubbing hands together
(b) Scratching a match stick against the box
(c) Sawing wood
(d) Drilling a hole into metal sheet
(e) Rubbing off some pencil marks with an eraser
- a)(a) and (e) only
- b)(a), (b) and (e) only
- c)(a), (b), (c) and (e) only
- d)(a), (b), (c), (d) and (e)
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Roy wants to make a list of actions that show friction produces heat. ...
As all these actions involve two surfaces rubbing against each other, thus force of friction comes into action which produces heat.
Most Upvoted Answer
Roy wants to make a list of actions that show friction produces heat. ...
Friction is the force that opposes the motion of objects in contact with each other. When two surfaces rub against each other, the friction between them produces heat. Roy wants to make a list of actions that demonstrate this concept. Let's analyze each option to determine which actions show friction producing heat:
(a) Rubbing hands together: When we rub our hands together, friction is generated between the surfaces of our palms. This friction produces heat, which we can feel as warmth. Therefore, option (a) can be included in Roy's list.
(b) Scratching a matchstick against the box: When we scratch a matchstick against the rough surface of the matchbox, friction is produced. This friction generates enough heat to ignite the matchstick. Hence, option (b) should be included in the list.
(c) Sawing wood: Sawing wood involves moving a saw back and forth across the surface of the wood. As the teeth of the saw rub against the wood, friction is generated. This friction produces heat, which can be felt when touching the saw or the wood. Therefore, option (c) should be included in the list.
(d) Drilling a hole into a metal sheet: While drilling a hole into a metal sheet, friction is generated between the rotating drill bit and the metal surface. This friction produces heat, which can be observed if the metal sheet becomes warm during the drilling process. Therefore, option (d) should be included in the list.
(e) Rubbing off some pencil marks with an eraser: When we use an eraser to rub off pencil marks from a paper, friction is produced between the eraser and the surface of the paper. This friction generates heat, which can be felt if we touch the eraser after rubbing. Hence, option (e) should be included in the list.
In conclusion, all of the options - (a), (b), (c), (d), and (e) - demonstrate actions where friction produces heat. Therefore, the correct answer is option (d), which includes all the given options.
(a) Rubbing hands together: When we rub our hands together, friction is generated between the surfaces of our palms. This friction produces heat, which we can feel as warmth. Therefore, option (a) can be included in Roy's list.
(b) Scratching a matchstick against the box: When we scratch a matchstick against the rough surface of the matchbox, friction is produced. This friction generates enough heat to ignite the matchstick. Hence, option (b) should be included in the list.
(c) Sawing wood: Sawing wood involves moving a saw back and forth across the surface of the wood. As the teeth of the saw rub against the wood, friction is generated. This friction produces heat, which can be felt when touching the saw or the wood. Therefore, option (c) should be included in the list.
(d) Drilling a hole into a metal sheet: While drilling a hole into a metal sheet, friction is generated between the rotating drill bit and the metal surface. This friction produces heat, which can be observed if the metal sheet becomes warm during the drilling process. Therefore, option (d) should be included in the list.
(e) Rubbing off some pencil marks with an eraser: When we use an eraser to rub off pencil marks from a paper, friction is produced between the eraser and the surface of the paper. This friction generates heat, which can be felt if we touch the eraser after rubbing. Hence, option (e) should be included in the list.
In conclusion, all of the options - (a), (b), (c), (d), and (e) - demonstrate actions where friction produces heat. Therefore, the correct answer is option (d), which includes all the given options.
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Roy wants to make a list of actions that show friction produces heat. Which of the following could he include in his list?(a) Rubbing hands together(b) Scratching a match stick against the box(c) Sawing wood(d) Drilling a hole into metal sheet(e) Rubbing off some pencil marks with an erasera)(a) and (e) onlyb)(a), (b) and (e) onlyc)(a), (b), (c) and (e) onlyd)(a), (b), (c), (d) and (e)Correct answer is option 'D'. Can you explain this answer?
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Roy wants to make a list of actions that show friction produces heat. Which of the following could he include in his list?(a) Rubbing hands together(b) Scratching a match stick against the box(c) Sawing wood(d) Drilling a hole into metal sheet(e) Rubbing off some pencil marks with an erasera)(a) and (e) onlyb)(a), (b) and (e) onlyc)(a), (b), (c) and (e) onlyd)(a), (b), (c), (d) and (e)Correct answer is option 'D'. Can you explain this answer? for Class 3 2024 is part of Class 3 preparation. The Question and answers have been prepared according to the Class 3 exam syllabus. Information about Roy wants to make a list of actions that show friction produces heat. Which of the following could he include in his list?(a) Rubbing hands together(b) Scratching a match stick against the box(c) Sawing wood(d) Drilling a hole into metal sheet(e) Rubbing off some pencil marks with an erasera)(a) and (e) onlyb)(a), (b) and (e) onlyc)(a), (b), (c) and (e) onlyd)(a), (b), (c), (d) and (e)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 3 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Roy wants to make a list of actions that show friction produces heat. Which of the following could he include in his list?(a) Rubbing hands together(b) Scratching a match stick against the box(c) Sawing wood(d) Drilling a hole into metal sheet(e) Rubbing off some pencil marks with an erasera)(a) and (e) onlyb)(a), (b) and (e) onlyc)(a), (b), (c) and (e) onlyd)(a), (b), (c), (d) and (e)Correct answer is option 'D'. Can you explain this answer?.
Roy wants to make a list of actions that show friction produces heat. Which of the following could he include in his list?(a) Rubbing hands together(b) Scratching a match stick against the box(c) Sawing wood(d) Drilling a hole into metal sheet(e) Rubbing off some pencil marks with an erasera)(a) and (e) onlyb)(a), (b) and (e) onlyc)(a), (b), (c) and (e) onlyd)(a), (b), (c), (d) and (e)Correct answer is option 'D'. Can you explain this answer? for Class 3 2024 is part of Class 3 preparation. The Question and answers have been prepared according to the Class 3 exam syllabus. Information about Roy wants to make a list of actions that show friction produces heat. Which of the following could he include in his list?(a) Rubbing hands together(b) Scratching a match stick against the box(c) Sawing wood(d) Drilling a hole into metal sheet(e) Rubbing off some pencil marks with an erasera)(a) and (e) onlyb)(a), (b) and (e) onlyc)(a), (b), (c) and (e) onlyd)(a), (b), (c), (d) and (e)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 3 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Roy wants to make a list of actions that show friction produces heat. Which of the following could he include in his list?(a) Rubbing hands together(b) Scratching a match stick against the box(c) Sawing wood(d) Drilling a hole into metal sheet(e) Rubbing off some pencil marks with an erasera)(a) and (e) onlyb)(a), (b) and (e) onlyc)(a), (b), (c) and (e) onlyd)(a), (b), (c), (d) and (e)Correct answer is option 'D'. Can you explain this answer?.
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