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Physics

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Physics: explore STEM content (page 12 of 27) · openstem

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Physics

Physics · L4 · Fluid Mechanics: Bernoulli's equation, continuity, and viscous flow · flowchart

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Physics · L4 · Fluid Mechanics: Bernoulli's equation, continuity, and viscous flow · flowchart

Collection12 items

01Physics · L5 · Formal Quantum Mechanics

02Physics · L5 · Statistical Mechanics

03Physics · L5 · Quantum Mechanics: Hilbert Space and the Schrödinger Equation

+9 more

Physics

Physics · L5 · Quantum, Relativity & Fields

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Physics · L5 · Quantum, Relativity & Fields

Quiz6 questions

Which formula gives the period of a simple pendulum undergoing small-angle swings?

AT = 2π√(m/k)BT = 2π√(L/g)CT = 2πL/gDT = L/g

Physics

Physics · L3 · Simple Harmonic Motion: Springs & Pendulums

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Physics · L3 · Simple Harmonic Motion: Springs & Pendulums

Note~249 words · 1 min

Stretchy or not Some things stretch easily: a rubber band, a spring, an elastic waistband. Pull them and they get longer, then snap back once you let go. A rock, a pencil or a spoon barely move however hard you push. What elastic actually m

Physics

Physics · L1 · Springs & Stretchy Things

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Physics · L1 · Springs & Stretchy Things

Note~323 words · 2 min

Curve the surface, change the reflection A flat mirror bounces light back evenly, so your reflection is the same size and the right way up. Curve the surface and the rays get pulled together or pushed apart instead. Concave: curving inward

Physics

Physics · L2 · Curved Mirrors

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Physics · L2 · Curved Mirrors

Flashcards10 cards

What is refraction?1 / 10

Refraction is the bending of light when it passes from one see-through material into another, like from air into water.

Physics

Physics · L2 · Refraction & Lenses

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Physics · L2 · Refraction & Lenses

Flowchart11 objects

Physics

Physics · L5 · Spacetime Curvature and Geodesics

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Physics · L5 · Spacetime Curvature and Geodesics

Note~345 words · 2 min

One law, three centuries of orbits Gravitational potential energy Circular orbits Gravity supplies precisely the centripetal force the circle demands. Set them equal: Escape velocity Set total mechanical energy to zero: just enough kinetic

Physics

Physics · L4 · Gravitation and orbital mechanics

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Physics · L4 · Gravitation and orbital mechanics

Collection4 items

01Physics · L3 · 1D Kinematics: The SUVAT Equations

02Physics · L3 · 1D Kinematics: The SUVAT Equations

03Physics · L3 · Picking a SUVAT Equation

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Physics

Physics · L3 · 1D Kinematics: The SUVAT Equations

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Physics · L3 · 1D Kinematics: The SUVAT Equations

Flowchart15 objects

Physics

Physics · L5 · Formation of the p–n Junction Depletion Region

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Physics · L5 · Formation of the p–n Junction Depletion Region

Note~600 words · 3 min

Stars shouldn't burn, classically The Sun's core sits near 10⁷ K, giving thermal energies around 1 keV. The Coulomb barrier between two protons is measured in MeV. Classically, nothing fuses. It happens anyway, by tunnelling. The Gamow peak

Physics

Physics · L5 · Nuclear Astrophysics: How Stars Build the Elements

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Physics · L5 · Nuclear Astrophysics: How Stars Build the Elements

Collection4 items

01Physics · L3 · Circular Motion

02Physics · L3 · Circular Motion & Centripetal Force

03Physics · L3 · Finding the Centripetal Force in Different Scenarios

+1 more

Physics

Physics · L3 · Circular Motion

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Physics · L3 · Circular Motion

Flashcards7 cards

Two forces, 20 N and 15 N, push an object in the same direction. What is the net force?1 / 7

Forces in the same direction add together: 20 N + 15 N = 35 N in that direction.

Physics

Physics · L3 · Newton's Second Law

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Physics · L3 · Newton's Second Law

Flowchart11 objects

Physics

Physics · L2 · Which Heat Transfer Is It?

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Physics · L2 · Which Heat Transfer Is It?

Flowchart7 objects

Physics

Physics · L2 · Refraction & Lenses · flowchart

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Physics · L2 · Refraction & Lenses · flowchart

Collection5 items

01Physics · L2 · Introducing Ohm's Law

02Physics · L2 · Introducing Ohm's Law

03Physics · L2 · More Voltage, More Current

+2 more

Physics

Physics · L2 · Introducing Ohm's Law

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Physics · L2 · Introducing Ohm's Law

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Physics

Physics · L2 · A Small Ball Hits a Big Ball

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Physics · L2 · A Small Ball Hits a Big Ball

Flowchart11 objects

Physics

Physics · L2 · Friction · flowchart

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Physics · L2 · Friction · flowchart

Flowchart10 objects

Physics

Physics · L3 · Identifying an Action-Reaction Pair

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Physics · L3 · Identifying an Action-Reaction Pair

Note~219 words · 1 min

Some materials let heat rush through, some don't Heat is always moving from warmer things to cooler ones. But materials differ enormously in how fast they let it through. Why metal feels cold Trapping warmth Using both on purpose A cooking

Physics

Physics · L1 · Keeping Warm: Insulators & Conductors of Heat

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Physics · L1 · Keeping Warm: Insulators & Conductors of Heat

Flashcards8 cards

What shape is the glass in a magnifying glass?1 / 8

It's thicker in the middle and thinner at the edges — curved outward on both sides, like a tiny dome.

Physics

Physics · L1 · Magnifying Glasses & Simple Lenses

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Physics · L1 · Magnifying Glasses & Simple Lenses

Flowchart7 objects

Physics

Physics · L1 · Sound & Music · flowchart

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Physics · L1 · Sound & Music · flowchart

Flowchart5 objects

Physics

Physics · L1 · Rainbows & Mixing Colors · flowchart

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Physics · L1 · Rainbows & Mixing Colors · flowchart

Flowchart9 objects

Physics

Physics · L1 · Gravity & Falling · flowchart

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Physics · L1 · Gravity & Falling · flowchart

Flowchart7 objects

Physics

Physics · L1 · Simple Machines · flowchart

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Physics · L1 · Simple Machines · flowchart

Note~285 words · 1 min

Reflection: one rule Angle of incidence equals angle of reflection, both measured from the NORMAL, not from the surface. Refractive index Snell's law Worked: air into water at 40°. Total internal reflection Going the other way, from dense t

Physics

Physics · L3 · Reflection, Refraction & Snell's Law

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Physics · L3 · Reflection, Refraction & Snell's Law

Flashcards8 cards

State Kirchhoff's current law (KCL).1 / 8

The sum of currents entering a node equals the sum of currents leaving it — charge cannot accumulate at a node in a steady circuit. It is a direct statement of conservation of charge.

Physics

Physics · L4 · DC Circuits — Kirchhoff's Laws & RC Transients

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Physics · L4 · DC Circuits — Kirchhoff's Laws & RC Transients

Note~296 words · 1 min

Gravity isn't a force here In GR, spacetime is a four-dimensional manifold carrying a metric tensor g_μν. Mass and energy curve it. Free particles then move as straight as they can through the curved geometry, and you call the result gravit

Physics

Physics · L5 · General Relativity: Metric, Geodesics, and the Line Element

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Physics · L5 · General Relativity: Metric, Geodesics, and the Line Element

Plot1 plot · 1 param

Physics

Physics · L3 · Current vs Total Resistance (Fixed Voltage)

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Physics · L3 · Current vs Total Resistance (Fixed Voltage)

Flowchart17 objects

Physics

Physics · L4 · Electromagnetic spectrum overview

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Physics · L4 · Electromagnetic spectrum overview

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