Quiz 1:   Fullscreen Mode Besaran dan Pengukuran A. Besaran Besaran adalah segala sesuatu yang dapat diukur dan dinyatakan dengan angka serta memiliki satuan tertentu. 1. Besaran Pokok Besaran pokok adalah besaran yang menjadi dasar dari besaran yang lain. Terdapat 7 besaran pokok dalam Sistem Internasional (SI): No Besaran Simbol Besaran Satuan SI Simbol Satuan SI 1 Panjang l meter m 2 Massa m kilogram kg 3 Waktu t sekon s 4 Suhu T kelvin K 5 Kuat Arus I ampere A 6 Jumlah Zat n mol mol 7 Intensitas Cahaya I candela cd 2. Besaran Turunan Besaran turunan adalah besaran yang diperoleh dari besaran pokok yang diturunkan. Beberapa contoh besaran turunan: Besaran Penjabaran Satuan Luas panjang × lebar m² Volume panjang × lebar × tinggi m³ Massa Jenis massa / volume kg/m³ Kecep...

Audio Podcast Quiz 1:   Fullscreen Mode Quiz 2:   Fullscreen Mode  5.2.1 Detection of radioactivity ## Radioactivity Detection Radioactivity is the process of releasing radiation from an unstable atomic nucleus. We are all exposed to radiation from various sources every day. Let's discuss some important things about radioactivity: ## Background Radiation Sources Background radiation comes from a variety of sources, both natural and artificial: - Cosmic rays from the sun - Radon gas in the air - Radon-containing granite rocks - Potassium-40 in food - Medical procedures that use radioisotopes - Nuclear power plants and the rest of the nuclear bomb tests ## Ionization Effect Radiation can cause ionization, which is the process of releasing electrons from atoms or molecules. This can be evidenced by: Electroscope Experiments: - When a fire or radium source is brought close to a charged electroscope, the charge is lost - Fire or radiation causes air molecules...

Quiz 1:   Fullscreen Mode Quiz 2:   Fullscreen Mode Fundamentals of Magnets Magnets are objects that have two poles - a north (N) pole and a south (S) pole. Every magnet always has these two poles, and cannot have only one pole (Ruoho & Arkkio, 2008). Properties of Magnets: Like poles repel each other Opposite poles attract each other The strength of the magnetic force decreases as the distance increases Magnetic Field The magnetic field is the region around a magnet where the magnetic force can still be felt. The strength of the magnetic field is shown by the magnetic field lines: The closer the field lines, the stronger the magnetic field The direction of the magnetic field is always from the north pole to the south pole Types of Magnetic Materials Magnetic Materials: Examples are iron, steel, nickel, and cobalt Can be attracted by magnets Can be magnetized Non-magnetic Materials: Examples are aluminum and wood Cannot be attr...

Quiz 1   Fullscreen Mode Quiz 2:   Fullscreen Mode Quiz 3:   Fullscreen Mode Quiz 4:   Fullscreen Mode Teori dan Rumus Kalor Teori dan Rumus Kalor 1. Pemuaian Zat Pemuaian zat dapat dibagi menjadi tiga jenis: Pemuaian Panjang: ΔL = α L₀ ΔT Pemuaian Luas: ΔA = β A₀ ΔT β = 2α Pemuaian Volume: ΔV = γ V₀ ΔT γ = 3α 2. Kalor Jenis Kalor jenis suatu zat didefinisikan sebagai: c = Q / (m ΔT) Dimana: c = kalor jenis (J/kg·K) Q = kalor (J) m = massa benda (kg) ΔT = perubahan temperatur (K) 3. Rumus Kalor Rumus dasar untuk menghitung kalor adalah: Q = m c ΔT Atau dalam bentuk kapasitas kalor: C = c m = Q / m 4. Perubahan Wujud Zat Terdapat beberapa rumus yang digunakan untuk menghitung kalor pada perubahan wujud zat: Kalor Penguapan dan Pengembunan: ...

Quiz 1:   Fullscreen Mode Theory of Moments Theory of Moments What is a Moment? The moment of a force is the turning effect produced by a force acting at a distance from a pivot or fulcrum. It depends on: The magnitude of the force (\(F\)) The perpendicular distance (\(d\)) from the line of action of the force to the pivot The formula for calculating the moment is: Moment (\(M\)) = Force (\(F\)) × Perpendicular Distance (\(d\)) Unit: Newton meter (Nm) Law of Moments The law of moments states that for a system in equilibrium: Sum of Clockwise Moments = Sum of Anticlockwise Moments This means there is no net turning effect on the body. Conditions for Equilibrium A body is in equilibrium when: The sum of all forces acting on it is zero (no net force). The sum of all moments about any point is zero (no net moment). Examples and Applications Example 1: Balanci...

Quiz 1:   Fullscreen Mode Quiz 2: Suhu, Termometer, dan Konversi Suhu Panduan Lengkap Suhu, Termometer, dan Konversi Suhu 1. Pengertian Suhu Suhu adalah ukuran derajat panas atau dinginnya suatu benda. Suhu menunjukkan tingkat energi kinetik partikel dalam suatu zat. 2. Jenis Termometer dan Skala Suhu Terdapat empat skala termometer utama: Celsius (°C) Reamur (°R) Fahrenheit (°F) Kelvin (K) 3. Titik Tetap Termometer Setiap termometer memiliki dua titik acuan: Titik Beku Air: 0°C = 32°F = 0°R = 273 K Titik Didih Air: 100°C = 212°F = 80°R = 373,15 K 4. Rumus Konversi Suhu Celsius ke Reamur R = (4/5) × C C = (5/4) × R Celsius ke Fahrenheit F = (9/5) × C + 32 C = (F - 32) × (5/9) Celsius ke Kelvin K = C + 273 C = K - 273 ...

Listrik Dinamis SMA 1. Konsep Dasar Listrik Dinamis Listrik dinamis adalah listrik yang mengalir dalam suatu rangkaian tertutup. Komponen utama: Arus listrik (I) Beda potensial/tegangan (V) Hambatan (R) Daya listrik (P) 2. Hukum Ohm Rumus Dasar: V = I × R Dimana: V = Tegangan (volt) I = Arus listrik (ampere) R = Hambatan (ohm) 3. Rangkaian Listrik A. Rangkaian Seri: Rtotal = R1 + R2 + R3 + ... I = I1 = I2 = I3 = ... Vtotal = V1 + V2 + V3 + ... B. Rangkaian Paralel: 1/Rtotal = 1/R1 + 1/R2 + 1/R3 + ... Itotal = I1 + I2 + I3 + ... V = V1 = V2 = V3 = ... 4. Daya dan Energi Listrik Rumus Daya: P = V × I P = I² × R P = V²/R ...

Mechanical Energy Problems An object with a mass of 5 kg is at a height of 10 meters above the ground. Given that the acceleration due to gravity is g = 10 m/s², determine the mechanical energy of the object. A ball with a mass of 2 kg falls freely from a height of 30 meters. If g = 10 m/s², when the ball reaches a height of 10 meters from the ground, calculate: Its velocity Its kinetic energy Its potential energy An object falls from a height of 6 meters above the ground. What is the velocity of the object when it reaches a height of 1 meter from the ground, if the acceleration due to gravity is 10 m/s²? A bullet with a mass of 100 grams is fired vertically upward from the ground with a velocity of 80 m/s. If g = 10 m/s², calculate: The maximum height reached by the bullet The energy of the bullet at its highest point The kinetic energy of the bullet at a height of 40 m from the ground ...

Kapasitor Kapasitor atau kondensator adalah alat yang dapat menyimpan muatan listrik atau energi listrik. Kapasitor banyak digunakan dalam rangkaian listrik. 1. Kapasitas Kapasitor Untuk kapasitor pelat sejajar dengan luas pelatnya A dan jarak antarpelatnya d, kapasitasnya adalah: C 0 = ε 0 A/d Jika antarpelatnya diisi bahan dielektrik dengan konstanta dielektrik K, kapasitasnya menjadi: C = KC 0 = Kε 0 A/d Satuan kapasitansi adalah farad, disingkat F. Jumlah muatan yang dapat tersimpan di dalam kapasitor sebanding dengan beda potensial V dan secara matematis ditulis sebagai berikut: Q = CV Energi yang dapat tersimpan dalam kapasitor memenuhi persamaan: W = 1/2 CV 2 2. Rangkaian Kapasitor a. Rangkaian Seri Kapasitor Dalam rangkaian seri kapasitor, muatan pada setiap kapasitor sama dengan muatan total rangkaian (Q 1 = Q 2 = Q 3 = Q). Namun, beda potensial pada masing-masing kapasitor berbeda dan jumlahnya sama dengan beda potensial total rangkaian. ...

Quiz 1:   Fullscreen Mode

Quiz 1:   Fullscreen Mode

Quiz 1   Fullscreen Mode

Quiz 1   Fullscreen Mode