🎓Mécanique des fluides – Bac 2026 J1 📝 1/5 – Exercice n°1 Terminale Spécialité Physique Chimie

https://duclosarnaud.wixsite.com/desp... 🚀 Review fluid mechanics with a complete exercise from the 2026 Baccalaureate exam! In this video, we provide a detailed solution to Exercise 1 from the 2026 Baccalaureate Physics-Chemistry exam, which focuses on fluid mechanics through the study of a washing machine's operation. 🧺💧 This exercise is ideal for reviewing all the essential concepts of the chapter and understanding the problem-solving methods expected on exam day. 📄 Before watching the solution, download the exam paper (link in the description) and try to solve it yourself. It's the best way to improve! ▬▬▬▬▬▬ 📚 PROGRAMME ▬▬▬▬▬▬ 🔹 Calculating a volumetric flow rate 🔹 Determining a filling time 🔹 Volume of a cubic tank 🔹 Volume of a cylinder 🔹 Ideal gases 🔹 Air compression 🔹 Pressure evolution in a compression chamber 🔹 Relationship PV = constant 🔹 Pressure and volume 🔹 Calculating overpressure 🔹 Algebraic demonstration 🔹 Numerical applications 🔹 Unit conversions (L, m³, cm, mm...) 🔹 Fundamental law of fluid statics 🔹 Hydrostatic pressure 🔹 Density 🔹 Current intensity Gravity 🔹 Verification of results 🔹 Physical analysis of the obtained values ▬▬▬▬▬▬ 🎯 VIDEO OBJECTIVES ▬▬▬▬▬▬ ✅ Understand the operation of a washing machine pressure switch. ✅ Know how to use volume formulas. ✅ Master the calculation of volumetric flow rate. ✅ Correctly apply the ideal gas law. ✅ Understand why a decrease in volume leads to an increase in pressure. ✅ Know how to demonstrate a literal expression. ✅ Successfully perform overpressure calculations. ✅ Apply the fundamental law of fluid statics. ✅ Avoid common calculation errors. ✅ Successfully complete the numerous unit conversions. ▬▬▬▬▬▬ ⚠️ PITFALLS IN THE EXAM ▬▬▬▬▬▬ ❌ Confusing a tank and a cube. ❌ Forgetting that the tank is half full. ❌ Making mistakes in the conversions of: • cm → m • mm → m • liter → m³ ❌ Forgetting the units for volumetric flow rate. ❌ Making a mistake during algebraic expansions. ❌ Incorrectly handling fractions. ❌ Not checking the physical consistency of the results. As is often the case in the Baccalaureate exam, the calculations are accessible… but accuracy is essential! A simple conversion error can cost you several points. ▬▬▬▬▬▬ 📖 RELEVANT BACCALAUREATE CHAPTERS ▬▬▬▬▬▬ 📌 Pressure in a fluid 📌 Fluid statics 📌 Ideal gases 📌 Volumetric flow rate 📌 Algebraic calculations 📌 Numerical applications 📌 Dimensional analysis 📌 Unit conversions ▬▬▬▬▬▬ 🎓 WHO IS IT FOR? ▬▬▬▬▬▬ 👨‍🎓 High School Seniors (Physics-Chemistry Specialization) 📝 Preparing for the 2026 Baccalaureate Exam 📚 End-of-Year Revision 🎯 Practice with Baccalaureate-Style Questions If this solution helps you better understand fluid mechanics, please give it a thumbs up 👍 and subscribe 🔔 so you don't miss any solutions to the 2026 Baccalaureate exam questions! 💬 Feel free to ask your questions in the comments: I'm happy to answer them. Happy revising and good luck on the Baccalaureate! 💪📖