8th Sci. Chapter 4: Current Electricity and Magnetism Notes. ▬▬ஜ۩۞۩ஜ▬▬     ✍🏻... विज्ञान विषयाच्या माहितीसाठी खालील⬇️ लिंकला🖇️ स्पर्श करा.           👉   माहिती विज्ञानाची 🎷 ━━═◆❃★❂ ★❃◆═━━ 1. Fundamental Concepts Atomic Structure : An atom contains equal numbers of positively charged protons and negatively charged electrons , making it electrically neutral overall. Ex. Atom of sodium  ▓▓▓ 🧿 ▓▓ ▓ ❀ ▓▓▓ 🧿 ▓▓▓ Current Electricity : Produced when negatively charged electrons in an electrical conductor are made to flow. * ━═━═💠 ═━═━* Electrostatic Potential: The electric level deciding the direction of flow of electric charges. Positive charge tends to flow from a higher electric level to a lower electric level. Potential Difference (V): The difference between the electrostatic potential of two points. Unit : Volt (V) in the SI system. ✺ 00:03●━✨━● 00:21 ✺ Flow of  current : Electrons flow from the negative terminal to the...

 टॅब्लेट आणि कॅप्सूल 💊 यात फरक .  टॅब्लेट आणि कॅप्सूल अशी रचना का केली?  इंजेक्शन  💉 ने औषध  देणे यात काय फायदा/ तोटा.  🏥 टॅब्लेट (Tablet), कॅप्सूल (Capsule) आणि इंजेक्शन (Injection) या औषध देण्याच्या वेगवेगळ्या पद्धती आहेत. प्रत्येकाची रचना, कार्य करण्याची पद्धत आणि फायदे-तोटे वेगवेगळे असतात. १. टॅब्लेट आणि कॅप्सूलमधील फरक वैशिष्ट्य टॅब्लेट (Tablet) : रचना :औषधाची पावडर एकत्र दाबून (Compress करून) घट्ट बनवलेली गोळी.  चव व वास: औषधाची चव कडू असू शकते आणि वासही येऊ शकतो.  मोडणे / कापणे: गरज पडल्यास ही गोळी अर्धी तोडून घेता येते. पचण्याची गती: पोटात विरघळायला आणि शोषले जायला थोडा जास्त वेळ लागतो.   टिकाऊपणा: जास्त काळ टिकते (Shelf-life जास्त असते). कॅप्सूल (Capsule):   बाहेरून जिलेटिन किंवा शिजवलेल्या स्टार्चचे आवरण आणि आत पावडर किंवा द्रव औषध. चव व वास: आवरणामुळे औषधाची कडू चव किंवा वास जाणवत नाही. मोडणे / कापणे:   ही तोडता येत नाही, अखंडच गिळावी लागते.   पचण्याची गती:   पोटात आवरण लवकर विरघळते, त्यामुळे औषध लवकर श...

9th Sci. Work, Energy, and Power—Note 🔴┈┉❀🏵||🏵❀┉┈🔴 ┈┉━ *❍❀❍* ━┉┈ ✍🏻... विज्ञान विषयाच्या माहितीसाठी खालील⬇️ लिंकला🖇️ स्पर्श करा.    👉   माहिती विज्ञानाची 🎷 ➖♾️⭕🔘⭕♾️➖ 🔴┈┉❀🏵||🏵❀┉┈🔴 1. Work Definition : Work is done when a force applied on an object causes displacement in the direction of the force. Formula: W = F. s  or  W = F s cos θ  when force is at an angle  θ  to displacement. Units : SI unit: Joule (J) 1 J = 1 N . 1 m CGS unit: Erg  1 erg = 1 dyne. 1 cm Relation:  1 J =  10 7   ergs ●┈┉꧁●꧂┉┈● 🧑‍🔧 Types of Work: ➕ Positive Work (θ = 0°): Force and displacement are in the same direction. ➖ Negative Work ( θ  = 180°): Force and displacement are in opposite directions (e.g., work done against gravity or friction). 🅾️ Zero Work ( θ  = 90° or s = 0): Force is perpendicular to displacement, or no motion occurs (e.g., circular orbit of a satellite). ┅━═▣◆ ★✧★ ◆▣═━┅ 2. 💪 Energy Definition : The capaci...

8th Sci. Chapter 3: Force and Pressure—Notes   ━═━═━═══━═━═━* ✺༺☬༒☬༻✺ ✍🏻... विज्ञान विषयाच्या माहितीसाठी खालील⬇️ लिंकला🖇️ स्पर्श करा.                   👉.    माहिती विज्ञानाची 🎷 🔴┈┉❀🏵||🏵❀┉┈🔴 ❶ . Types of Forces 👊 Contact Force : A force applied through direct contact between two bodies or via an intermediate object. Examples: Muscular force (pushing, pulling, lifting) and frictional force (slows down moving objects). 👐Non-Contact Force : A force applied between two objects even when they are not in physical contact. Examples: Magnetic force, gravitational force, and electrostatic force. ꧁●○≛⃝ ≛⃝ 🌍○●꧂ ❷ . Balanced and Unbalanced Forces Balanced Forces: Equal forces acting on an object in opposite directions. The effective net force is zero, resulting in no change in motion. Unbalanced Forces : Unequal forces acting on an object. They cause a stationary object to move or change its speed and direction. ⛓️‍💥 Rules of N...

9th Sci. Chapter 1: Laws of Motion, Notes -2. ➖♾️⭕🔘⭕♾️➖ ✺༺☬༒☬༻✺ ✍🏻... विज्ञान विषयाच्या माहितीसाठी खालील⬇️ लिंकला🖇️ स्पर्श करा. 👉🖊️.        माहिती विज्ञानाची 🎷    ☬✧°══✺══°✧☬ 1. Basic Concepts of Motion Distance : Length of the actual path traversed by an object in motion. (Scalar quantity) Displacement : Minimum distance from the starting point to the final point. (Vector quantity) Speed:  Speed = Distance / Time Scalar quantity, SI unit: m/s Velocity: Velocity = Displacement / Time Vector quantity, SI unit: m/s Acceleration : Rate of change of velocity. a = v - u / t SI Unit: m/s² ❀꧁✧꧂❀ 2. Newton’s Laws of Motion: 🥇First Law (Law of Inertia): An object continues to remain at rest or in a state of uniform motion along a straight line unless an external unbalanced force acts on it. 🥈 Second Law : The rate of change of momentum is proportional to the applied force, and the change of momentum occurs in the direction of the force. Formula: ...

Chapter 1: Laws of Motion, Notes 🔴┈┉❀🏵||🏵❀┉┈🔴 ➖♾️⭕🔘⭕♾️➖ ✍🏻... विज्ञान विषयाच्या माहितीसाठी खालील⬇️ लिंकला🖇️ स्पर्श करा.🎸 👉🖊️   माहिती विज्ञानाची 🎷 ━━═◆❃★❂ ★❃◆═━━ 1. Motion & Relative Motion Definition of motion :  An object is said to be in motion if its position changes with respect to its surroundings; otherwise, it is at rest. Motion is a relative concept.  Ex: Flight of a bird and leaves flying through air represent motion, while a stationary train or a stone on a hill represents rest. ┅━═▣◆★✧★◆▣═━┅ 2. Difference—Distance and Displacement Many times distance is more than displacement. Many times displacement is less than distance. ✺༺☬༒☬༻✺ Scalar vs. Vector: Scalar Quantity: Has magnitude only (e.g., distance, speed, time). Vector Quantity: Has both magnitude and direction (e.g., displacement, velocity, acceleration). 🔴┈┉❀🏵||🏵❀┉┈🔴 3. Speed and Velocity Formulas: Units: SI System: m/ CGS System: cm/s ☬ ✧°══✺══°✧ ☬ Effect of Speed and Direct...

8th Sci. 📘 Chapter 2: Health and Diseases (Notes-2) ● ~~•❅• 🫐 •❅•~~ ● ●~~•❅••❅•~~● ▬▬▬▬ஜ۩۞۩ஜ▬▬▬ ✍🏻.. विज्ञान विषयाच्या माहितीसाठी खालील⬇️ लिंकला🖇️ स्पर्श करा.🎸            👉 🖊️.   माहिती विज्ञानाची 🎷 ━━═◆❃★❂ ★❃◆═━━ 1. Non-Infectious Diseases Diseases that do not occur through infections and body contacts are called non-infectious diseases. These arise inside the human body due to specific reasons. 🔅~~●●○○ 🫐○○●●~~ 🔅 A. Cancer Definition : Uncontrolled and abnormal cell growth. Malignant Tumor : A group or lump of cancerous cells. Affected Organs : Lungs, mouth, tongue, stomach, breast, uterus, skin, and blood tissues. Reasons / Causes: Consumption of tobacco, gutkha, smoking, and alcoholism. Lack of fiber content (fruits and leafy vegetables) in food. Excessive consumption of junk food (pizza, burgers , etc.). Heredity. Symptoms: Chronic cough, hoarse voice, difficulty in swallowing. Incurable scar and inflammation. Lumps in breast. Unexp...