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Physics: explore STEM content (page 21 of 27) · openstem

All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Physics Physics groups

Explore STEM Content

Search the community's STEM library — free to study, yours to make your own.

Physics

Mechanics, electromagnetism and quantum on openstem — flashcards, notes, quizzes, plots and sketches shared by the community. Study free, or clone anything into your library.

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Flowchart13 objects

Physics

Physics · L4 · Classifying an Oscillator's Damping Regime

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Physics · L4 · Classifying an Oscillator's Damping Regime

Collection4 items

01Physics · L5 · Perturbation Theory & Scattering

02Physics · L5 · Perturbation Theory and Scattering

03Physics · L5 · Choosing a Scattering Approximation

+1 more

Physics

Physics · L5 · Perturbation Theory & Scattering

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Physics · L5 · Perturbation Theory & Scattering

Flowchart11 objects

Physics

Physics · L4 · Wave Optics: Polarization & Diffraction Gratings · flowchart

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Physics · L4 · Wave Optics: Polarization & Diffraction Gratings · flowchart

Flowchart16 objects

Physics

Physics · L2 · Static Friction vs. Kinetic Friction

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Physics · L2 · Static Friction vs. Kinetic Friction

Collection5 items

01Physics · L2 · Newton's Three Laws

02Physics · L2 · Newton's Three Laws

03Physics · L2 · Newton's Three Laws of Motion

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Physics

Physics · L2 · Newton's Three Laws

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Physics · L2 · Newton's Three Laws

Note~451 words · 2 min

What actually travels Energy moves. Matter doesn't. Each bit of the medium oscillates about its own spot and hands the disturbance on. The quantities, and what each is for Superposition: waves just add Two waves in the same place don't coll

Physics

Physics · L4 · Wave mechanics: interference, diffraction, and standing waves

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Physics · L4 · Wave mechanics: interference, diffraction, and standing waves

Note~270 words · 1 min

A special curved shape A magnifying glass isn't just any glass. It's thicker in the middle and thinner at the edges, like a small dome. That curve is what makes it a lens. Light travels straight until something bends it. A flat window barel

Physics

Physics · L1 · Magnifying Glasses & Simple Lenses

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Physics · L1 · Magnifying Glasses & Simple Lenses

Flowchart7 objects

Physics

Physics · L3 · Circular Motion & Centripetal Force · flowchart

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Physics · L3 · Circular Motion & Centripetal Force · flowchart

Flowchart17 objects

Physics

Physics · L2 · How a Rubbed Balloon Gets Static Cling — or a Shock

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Physics · L2 · How a Rubbed Balloon Gets Static Cling — or a Shock

Note~397 words · 2 min

Ionised gas is not automatically a plasma A candle flame has free charges in it. What makes something a plasma is collective behaviour: each particle's motion is set by the self-consistent field of the whole ensemble, not by occasional clos

Physics

Physics · L5 · Plasma Physics: Debye Shielding and Collective Behaviour

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Physics · L5 · Plasma Physics: Debye Shielding and Collective Behaviour

Note~402 words · 2 min

Qubits Entanglement A joint state that cannot be written as a product of two single-qubit states. The canonical example: Bell's theorem Einstein, Podolsky and Rosen argued in 1935 that quantum mechanics must be incomplete, and that pre-exis

Physics

Physics · L5 · Quantum Information: Entanglement and Bell's Theorem

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Physics · L5 · Quantum Information: Entanglement and Bell's Theorem

Quiz6 questions

In the formula q = mcΔT, what does c represent?

AThe total heat energy transferredBThe mass of the substanceCThe specific heat capacity — a property of the materialDThe change in temperature

Physics

Physics · L3 · Specific Heat & Calorimetry

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Physics · L3 · Specific Heat & Calorimetry

Flashcards10 cards

Distinguish elastic from inelastic collisions.1 / 10

Elastic: both momentum AND kinetic energy conserved (e.g. ideal billiard balls, atomic collisions). Inelastic: momentum conserved, KE NOT conserved (some converts to heat/sound). Perfectly inelastic: objects stick together.

Physics

Physics · L4 · Energy, Work & Momentum

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Physics · L4 · Energy, Work & Momentum

Note~406 words · 2 min

The ray picture, and when it's enough Treat light as straight lines that bend at a lens and bounce off a mirror. That's all you need whenever the optics are much bigger than a wavelength. Slits and gratings are where this breaks down and wa

Physics

Physics · L4 · Geometric Optics: Lenses, Mirrors, and Ray Diagrams

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Physics · L4 · Geometric Optics: Lenses, Mirrors, and Ray Diagrams

Flowchart9 objects

Physics

Physics · L4 · Oscillations: SHM, Damping, and Resonance · flowchart

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Physics · L4 · Oscillations: SHM, Damping, and Resonance · flowchart

Flowchart13 objects

Physics

Physics · L2 · Sound: Pitch, Loudness & Echoes · flowchart

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Physics · L2 · Sound: Pitch, Loudness & Echoes · flowchart

Collection5 items

01Physics · L3 · Wave Properties

02Physics · L3 · Wave Properties

03Physics · L3 · Wave Properties: Wavelength, Frequency, and Speed

+2 more

Physics

Physics · L3 · Wave Properties

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Physics · L3 · Wave Properties

Quiz7 questions

A wire of length 2 m stretches to 2.004 m under load. What is the strain?

A0.0002B0.002C0.02D0.2

Physics

Physics · L4 · Elasticity — 7 Q

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Physics · L4 · Elasticity — 7 Q

Quiz6 questions

Which equation correctly states the work-energy theorem?

AW_net = ΔKE = ½mv_f² − ½mv_i²BW_net = F × d, with no connection to speedCF = maDKE = mv, without a square or a factor of ½

Physics

Physics · L3 · Work-Energy Theorem

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Physics · L3 · Work-Energy Theorem

Flowchart7 objects

Physics

Physics · L1 · Friction: Why Things Slow Down · flowchart

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Physics · L1 · Friction: Why Things Slow Down · flowchart

Collection4 items

01Physics · L1 · Keeping Warm: Insulators & Conductors of Heat

02Physics · L1 · Keeping Warm: Insulators & Conductors of Heat

03Physics · L1 · Choosing Materials for a Cooking Pot

+1 more

Physics

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

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

Flashcards10 cards

What is emitted in alpha decay, and how does it change the nucleus?1 / 10

An alpha particle — a ⁴He nucleus (2 protons + 2 neutrons). The parent's atomic number Z decreases by 2 and mass number A decreases by 4: ᴬZX → ᴬ⁻⁴Z₋₂Y + α.

Physics

Physics · L4 · Nuclear Physics

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Physics · L4 · Nuclear Physics

Collection5 items

01Physics · L2 · What Is Density?

02Physics · L2 · Buoyancy & Archimedes' Principle

03Physics · L2 · Density & Buoyancy

+2 more

Physics

Physics · L2 · Density & Buoyancy

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Physics · L2 · Density & Buoyancy

Flashcards10 cards

State the hydrostatic pressure equation for a fluid at rest.1 / 10

P = P₀ + ρgh, where P₀ is the pressure at the surface (often atmospheric), ρ is fluid density, and h is depth below the surface. Pressure increases linearly with depth and does not depend on the container's shape.

Physics