💡Physics with Heera

! IMPORTANT DEFINITIONS !
Part 2

🔍Resistivity of a conductor, p
👉🏻Measure of a conductor's ability to oppose the flow of the electric current.

🔍Superconductors
👉🏻Materials that conduct electricity without any resistance.

🔍Critical temperature, Tc
The temperature when the resistivity of a superconductor becomes ZERO.

🔍Electromotive force (e.m.f.)
Energy transferred or work done by an electrical source to move one coulumb of charge in a complete circuit.

🔍Voltage drop
Value of potential difference across the circuit, V is SMALLER than the e.m.f. of the dry cell
V < e.m.f.

🔍Internal resistance, r of dry cell
The resistance caused by electrolytes in the dry cell
🧠Apa effects??
😿Loss of energy in the form of heat in dry cell
😿V < e.m.f. ---- (voltage drop👀)


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💡Physics with Heera👩‍🏫

Chapter 1 - Force and Motion II
🌷1.4 Elasticity

Elasticity
👉The property of material that enables an object to return to its original shape and size after the force applied on it is removed

Hooke's Law
👉The extension of spring (x) is directly proportional to the force applied on the spring (F) provided the elastic limit of the spring is not exceeded

k is spring constant

F=kx

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🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera👩‍🏫

Important Definitions !

🌷Chapter 1 - Force and Motion II

1⃣Weight
👉The gravitational force acting on an object

2⃣Force
👉A push or pull upon an object

3⃣Resultant Force
👉The single force that represents the vector sum of 2 or more forces acting on an object
👉The total force acting on the object

4⃣Free body diagram of an Object
👉Diagram that shows all the forces acting on that object only

5⃣Newton's 2nd Law of Motion (F=ma)
👉The rate of change of momentum is directly proportional to the force
👉Acts in the direction of the applied force

6⃣Acceleration (a= v-u / t)
👉Rate of change of velocity

7⃣Resolution of Forces
👉The process of resolving a force into 2 components
- Vertical and horizontal

8⃣Equilibrium of Forces or (Forces in Equilibrium)
👉The force acting on it produce a zero resultant force

9⃣Elasticity
👉The property of material that enables an object to return to its original shape and size after the force applied on it is removed

🔟Hooke's Law
👉The extension of a spring (x) is directly proportional to the force applied on the spring provided the elastic limit of the spring is not exceeded.

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#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera👩‍🏫

Chapter 1 - Force and Motion II
🌷1.4 Elasticity

Elasticity
👉The property of material that enables an object to return to its original shape and size after the force applied on it is removed

Hooke's Law
👉The extension of spring (x) is directly proportional to the force applied on the spring (F) provided the elastic limit of the spring is not exceeded

k is spring constant

F=kx

#physics #f5 #c1
#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera

4.1 Force on a Current-carrying Conductor in a Magnetic Field

🧲When a current-carrying conductor is placed in a magnetic field, the conductor will experience FORCE

🧲Direction of the force depends on :
🔋Direction of the current
🔋Direction of the magnetic field

🧲Force on a current-carrying conductor in a magnetic field is produced by?
👉The interaction between 2 magnetic fields
● magnetic field from the electric current in the conductor
●magnetic field from the permanent magnet

🫂The 2 magnetic fields combine to produce resultant magnetic field that is known as CATAPULT FIELD
🍁The PATTERN of the catapult field = direction of the force acting on the conductor

What is Catapult field? (Pg 138)

👉A resultant magnetic field produced by the interaction between the magnetic field from a current-carrying conductor and magnetic field from a permanent magnet

~ to be continued ~
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💡Fizik bersama Heera dan Hanis

4.1 - Daya ke atas konduktor pembawa arus dalam suatu medan magnet

🧲 Apabila konduktor pembawa arus diletakkan dalam suatu medan magnet, konduktor tersebut akan mengalami DAYA

🧲 Arah daya bergantung pada :
🔋 Arah arus
🔋 Arah medan magnet

🧲 Daya pada konduktor pembawa arus dalam medan terhasil daripada ?
👉 Interaksi di antara 2 medan magnet
● medan magnet drpd arus elektrik dalam konduktor
● medan magnet drpd magnet kekal

🫂 - 2 medan magnet ini bergabung utk menghasilkan 1 medan magnet paduan yg dikenali sbgai MEDAN LASTIK

🍁 CORAK medan lastik = arah tindakan daya pada konduktor itu

Apakah itu medan lastik ? (Pg 138)

👉 medan magnet paduan yg dihasilkan oleh interaksi antara medan magnet drpd konduktor pembawa arus dgn medan magnet drpd magnet kekal

~ bersambung ~

🪴English Version : https://t.me/serenenotes/365

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🦋*ੈ✩‧₊˚ 『 @serenenotes 』

Frequently asked question in Physics F4C5

How does a turning fork produce sound waves?
- When a turning fork vibrates, layes or air vibrate.
- The particle of air undergoes series of compression & rarefaction
- Sound energy is propagated through the air in the form of waves

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💡Physics with Heera

Chapter 2 - Pressure😮‍💨
📡2.5 : Archimedes' Principle

🏖Buoyant Force
(PDF)

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🦋*ੈ✩‧₊˚ 『 @serenenotes 』

Senarai Definisi Fizik

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🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera👩‍🏫

Chapter 1 - Force and Motion II
📡1.1 - Resultant Force

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#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera👩‍🏫

Chapter 1 - Force and Motion II

📡1.1 - Resultant Force
(PDF)

#physics #f5 #c1
#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera👩‍🏫

Chapter 5 : Waves (F4)
🌈Electromagnetic Waves

Definition !
🌸Made up of magnetic field and electric field that oscillates perpendicularly to one another

👉Mneumonic
Raju Mumbled I Love U eX Girlfriend

Raju - Radiowave
Mumbled - Microwave
I - Infrared
Love - Visible Light
U - Ultraviolet
eX- Xray
Girlfriend - Gamma ray

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Notes Physics on Pressure

Creds to FeeZeek Channel
@FeeZeekz

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💡PHYSICS💡

Form 4
🧲Chapter 6 : Light and Optics

Creds to owners✨

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💡Fizik bersama Heera dan Hanis 💡

📡 Bab 3
3.1 - Hukum Kegravitian Semesta Newton

! Definisi Penting !

1⃣ Daya Graviti

👉 Dikenali sbgai daya semesta
👉 Mengapa ? Kerana daya graviti bertindak antara mana² dua jasad dalam alam semesta
👉 Daya graviti wujud secara berpasangan [ dua jasad ]
👉 Dua jasad tersebut mengalami daya graviti dengan magnitud yang samaa

💥 Berkadar terus dgn hasil darab jisim kuasa dua jasad
💥 Berkadar songsang dgn kuasa dua jarak di antara pusat jasad tersebut


2⃣ Hukum Kegravitian Semesta Newton.... menyatakan bahawa

🔍 daya graviti antara 2 jasad adalah berkadar terus dgn hasil darab jisim kedua² jasad
🔍 berkadar songsang dgn kuasa 2 jarak diantara pusat dua jasad tersebut


3⃣ Daya memusat (ms 90)

🌻Daya yang bertindak ke atas sebuah jasad dengan arah yang sentiasa menuju ke pusat bulatan itu
🌻Magnitud daya memusat bergantung kepada :
a) Jisim jasad
b) Halaju linear
c) Jejari bulatan

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