Work and Energy | Class 9 Physics Chapter 6 | Conceptual and Short Questions | Federal Board Exam скачать в хорошем качестве

Work and Energy | Class 9 Physics Chapter 6 | Conceptual and Short Questions | Federal Board Exam

Work and Energy | Class 9 Physics Chapter 6 | Conceptual and Short Questions | Question 1 to 10 | Important Questions | Exam Preparation | Federal Board Exam | New Book NBF This video covers the important conceptual and short response questions (Q1–Q10) from Class 9 Physics Chapter 6 Work and Energy, according to the Federal Board (FBISE) syllabus based on the New Book by National Book Foundation (NBF). Each question is explained in a clear and easy manner, helping students understand key concepts and prepare effectively for board exams. 📝Today's lecture notes: https://drive.google.com/file/d/1QEDs... Questions Covered in This Video: Q1. A car is moving with a constant speed along a straight road. Is there any work done on the car? Q2. Does the work done in raising a box up in a building depend upon how fast it is raised up? Through which path? To how much height? Q3. Work done on a body either speeds it up or slows it down. Keeping in mind, explain how much work is done by centripetal force on an orbiting satellite? Q4. A car has kinetic energy E_k. By what factor its kinetic energy would change if its velocity is doubled? Q5. A bullet is fired from gun, bullet penetrates into sand wall and it stops. Where does its kinetic energy used? Q6. An LED light bulb has an efficiency of 80%. Does it violate conservation of energy principle? Q7. How does using renewable energy sources contribute to reducing environmental impact compared to non-renewable sources? Q8. Will we eventually rely entirely on renewable energy sources? Why or why not? Q9. How can increasing the power of a machine impact its energy consumption? Q10.A perpetual engine has an efficiency equal to 1. Why it will not work? Complete Class 9 Physics Conceptual Questions (Ch 1–9): https://www.youtube.com/playlist?list... Class 9 Physics Chapter 1 Playlist:    • Class 9 Physics Chapter 1 (Complete) | Phy...   Class 9 Physics Chapter 2 Playlist:    • Rest and Motion | Class 9 Physics | Chapte...   Class 9 Physics Chapter 3 Playlist:    • Class 9 Physics Chapter 3 (complete) | Dyn...   Join WhatsApp Channel https://whatsapp.com/channel/0029Vb6a... Subscribe For More:    / @sparklearningacademy   #sparklearningacademy #class9physics #federalboardphysics #nbfphysics #class9chapter6 #workandenergy #conceptualquestions #shortquestionsphysics #exampreparation #importantquestions #force #motion #workdone #speed #centripetalforce #orbitingsatellite #kineticenergy #velocity #efficiency #conervationofenergy #energy #renewableenergy #power #perpetual Copyright Disclaimer: Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statutes that might otherwise be infringing. Non-profit, educational, or personal use tips the balance in favor of fair use.