💡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

#physics #c4 #f5
#malay
#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera

📡Chapter 3 : Electricity

! IMPORTANT DEFINITIONS !
Part 1

🔎E.H.T
👉🏻Extra high tension

🔍Electric field
👉🏻The REGION around a charged particle where any charge in the region will experience an electric force.

🔍Electric field strength, E
👉🏻Electric force acting on a unit postive charge placed at a point.

🔍Current, I
👉🏻The rate of flow of charge, Q in a conductor

🔍Potential difference, V
👉🏻The work done, W in moving one coulumb of charge, Q from one point to another.
V = W/Q or
V = E/Q

🔍Resistance
👉🏻Ratio between potential difference, V and current, I.
R = V/I

🔍Rheostat
👉🏻Control the current flow

🔍s.w.g.
👉🏻Size wire gauge

#physics #c3 #f5
#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡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👀)


#physics #c3 #f5
#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera

📡Chapter 2 - Force and Motion I📡

1⃣Newton's 1st Law of Motion
👉🏻An object will remain at rest or move at uniform velocity unless acted upon by an external force

Inertia
👉🏻The tendency of an object to remain at rest or if moving, to continue its motion in a straight line at uniform velocity

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

3⃣Newton's 3rd Law of Motion
👉🏻For evert action, there is a reaction of equal magnitude, but in the opposite direction.

Impulse, J
👉🏻Change of momentum
J= mv - mu

Impulsive FORCE, F
👉🏻RATE of change of momentum
F= ( mv - mu ) / t

#physics #c2 #f4
#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera

🔭Principle of Conservation of MOMENTUM

🧲The total momentum BEFORE collision is EQUAL to the total momentum AFTER collision if no external force is acting on it.

Basically,
Before = After
(No external force)

#physics #c2 #f4
#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera

📡Chapter 3 - Gravitation
3.1 Newton's Universal Law of Gravitation

Important Definitions !

1⃣ Gravitational Force

👉Known as Universal force
👉Why? It acts between any two bodies in the universe
👉Force of attraction between any two bodies
👉Gravitational force exists between 2 bodies
👉both bodies experience gravitational force of the same magnitude

💥Directly proportional to the product of the masses of the two bodies
💥Inversely proportional to the square of the distance between the centres of the two bodies


2⃣Newton's Universal Law of Gravitation.... states that

🔍 The gravitational force between two bodies is directly proportional to the product of the masses of both bodies
🔍Inversely proportional to the square of the distance between the centres of the two bodies


3⃣Centripetal Force (pg 90)

🌻A force acts on the body in a direction towards the centre of cirlce
🌻The magnitude of the centripetal force depends on the
a) Mass of the body
b) Linear speed
c) Radius of the circle

#physics #c3 #f4
#heera
🦋*ੈ✩‧₊˚ 『 @serenenotes 』

💡Physics with Heera

📡Chapter 3 - Gravitation
3.2 Kepler's Law

Important Definitions !

1⃣Kepler's 1st Law

🪐All planets move in elliptical orbits with the Sun🌞 at one focus
🪐Law of Orbits


2⃣Kepler's 2nd Law

👉A line that connects a planet to the Sun sweeps out equal areas in equal times
👉Law of Areas


3⃣Kepler's 3rd Law

⏳The square of the orbital period(T²) of any planet is directly proportional to the cube of the radius(r³) of its orbit
⏳Law of Periods


#physics #c3 #f4
#heera

🦋*ੈ✩‧₊˚ 『 @serenenotes 』

🧲 Trial SPM 2022 🧲

Paper 1 👉 40 questions

🔭Kedah ✅
https://t.me/physicsspmnotes/6586

🔭Pahang ✅
https://t.me/physicsspmnotes/6688

🔭 Selangor ✅
https://t.me/physicsspmnotes/6793

🔭 Melaka ✅
https://t.me/physicsspmnotes/6892

🔭SPMRSM 2021✅
https://t.me/physicsspmnotes/7002

🔭SPMRSM 2022✅
https://t.me/physicsspmnotes/7542

🔭Terengganu✅
https://t.me/physicsspmnotes/7082

🔭SBP✅
https://t.me/physicsspmnotes/7166

🔭Selangor set 1 2022✅
https://t.me/physicsspmnotes/7270

🔭Negeri 9✅
https://t.me/physicsspmnotes/7342

🔭Modul Kenyalang Sarawak 2022 ✅
https://t.me/physicsspmnotes/7428


#trial2022
Creds to admin @physicsspmnotes

,korang kuatkan tau basic sangat penting ye even kita nak spm !!!

#spm
credit : @studykimia

Chemical test to differentiate alcohol and carboxylic acid🌼

#form5

Credit : @studykimia

Sesiapa yg berminat, sila pm admin @TahirahSultana
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🌟Topical Chemistry SPM Past years 🌟
[2021-2023]

Compiled by : Tahirah Sultana (Heera) 🍓『 @serenenotes 』

💡Form 4

2⃣ Matters and Atomic Structure
3⃣ Mole Concept and Chemical formula and Equations
4⃣ Periodic Table of Elements
5⃣ Chemical Bond
6⃣ Acids, Bases and Salts
7⃣ Rate of Reaction
8⃣ Manufactured Substance in Industry


⚗Form 5

1⃣ Redox
2⃣ Carbon Compounds
3⃣ Thermochemistry
4⃣ Polymer
5⃣ Consumer and Industrial Chemistry

🧪 Suggested Answers for SPM 2021

🌺 Pesanan Sis Heera :
Doakan akak selalu sihat dan mencapai kejayaan dalam akademik 📚
Tolong doakan parents dan keluarga akak selalu sihat jugak ya☺️

#chemistry #spm
🦋*ੈ✩‧₊˚ 『 @serenenotes 』

Masih boleh daftar ya utk sesi tonight

Chemistry

Chemistry