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Physics: explore STEM content (page 16 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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Flowchart11 objects

Physics

Physics · L2 · From Watts to a Power Bill

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Physics · L2 · From Watts to a Power Bill

Flowchart5 objects

Physics

Physics · L4 · Geometric Optics — 7 Q · flowchart

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Physics · L4 · Geometric Optics — 7 Q · flowchart

Collection4 items

01Physics · L2 · Permanent Magnets & Field Lines

02Physics · L2 · Permanent Magnets & Field Lines

03Physics · L2 · How a Compass Finds North

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Physics

Physics · L2 · Permanent Magnets & Field Lines

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Physics · L2 · Permanent Magnets & Field Lines

Note~206 words · 1 min

Momentum is a vector Conservation, and why it holds No net external force on the system means total momentum before equals total momentum after. Elastic, inelastic, perfectly inelastic Momentum is conserved in all three. Kinetic energy is w

Physics

Physics · L3 · Conservation of Momentum

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Physics · L3 · Conservation of Momentum

Flashcards10 cards

What does Newton's law of universal gravitation say?1 / 10

Every object with mass attracts every other object with mass. The pull is stronger for bigger masses and weaker the farther apart they are.

Physics

Physics · L3 · Universal Gravitation

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Physics · L3 · Universal Gravitation

Collection4 items

01Physics · L4 · DC Circuits — Kirchhoff's Laws & RC Transients

02Physics · L4 · DC circuits: Kirchhoff's laws and RC transients

03Physics · L4 · Solving a DC Circuit with Kirchhoff's Laws

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Physics

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

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

Flashcards5 cards

What does a magnet do?1 / 5

A magnet pulls some metal objects toward it without touching them. This invisible pull is called magnetism.

Physics

Physics · L1 · Magnets

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Physics · L1 · Magnets

Flowchart7 objects

Physics

Physics · L1 · Heat & Temperature · flowchart

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Physics · L1 · Heat & Temperature · flowchart

Flowchart7 objects

Physics

Physics · L3 · Simple Harmonic Motion: Springs & Pendulums · flowchart

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Physics · L3 · Simple Harmonic Motion: Springs & Pendulums · flowchart

Flowchart17 objects

Physics

Physics · L3 · Tracing the Magnetic Force on a Moving Charge

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Physics · L3 · Tracing the Magnetic Force on a Moving Charge

Flowchart15 objects

Physics

Physics · L4 · Free-body diagram: block on inclined plane

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Physics · L4 · Free-body diagram: block on inclined plane

Flowchart11 objects

Physics

Physics · L1 · Floating & Density · flowchart

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Physics · L1 · Floating & Density · flowchart

Quiz8 questions

What distinguishes polarized light from unpolarized light?

APolarized light has a higher frequencyBPolarized light's electric field oscillates in a single fixed plane; unpolarized light's field direction is randomCPolarized light travels faster than unpolarized lightDPolarized light is always monochromatic

Physics

Physics · L4 · Polarization & Diffraction

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Physics · L4 · Polarization & Diffraction

Flashcards9 cards

What does this equation define?1 / 9

Electric potential (voltage) — the electric potential energy U per unit of charge q at a point.

Physics

Physics · L3 · Electric Potential & Capacitors

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Physics · L3 · Electric Potential & Capacitors

Note~197 words · 1 min

Two kinds of energy you can watch Think of a swing pulled back and held. It isn't moving, but it isn't doing nothing either. It's ready to move, like it's holding its breath. The same swap, four ways The wind-up car is worth doing yourself.

Physics

Physics · L1 · Energy in Motion

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Physics · L1 · Energy in Motion

Flowchart12 objects

Physics

Physics · L2 · Magnetism & Electromagnets · flowchart

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Physics · L2 · Magnetism & Electromagnets · flowchart

Flowchart7 objects

Physics

Physics · L1 · Mirrors & Reflections · flowchart

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Physics · L1 · Mirrors & Reflections · flowchart

Collection4 items

01Physics · L2 · Springs & Hooke's Law

02Physics · L2 · Springs & Hooke's Law

03Physics · L2 · Stretching a Spring: Within Limits or Past Them

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Physics

Physics · L2 · Springs & Hooke's Law

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Physics · L2 · Springs & Hooke's Law

Quiz6 questions

What is surface tension?

AA stretchy, skin-like pull at the top of waterBA force that only happens in soapCThe temperature of waterDA kind of wind over water

Physics

Physics · L1 · Bubbles & Surface Tension

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Physics · L1 · Bubbles & Surface Tension

Flashcards10 cards

How can you tell which of two objects is heavier?1 / 10

You can hold one in each hand and feel which one pulls down harder, or put them on a scale that measures exactly how heavy each one is.

Physics

Physics · L1 · Weighing & Balancing

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Physics · L1 · Weighing & Balancing

Flashcards11 cards

What is meant by 'sensitive dependence on initial conditions' (the butterfly effect)?1 / 11

Two trajectories starting arbitrarily close together in phase space diverge exponentially in time, so that after a finite time the systems are effectively uncorrelated. Formally, |δx(t)| ≈ |δx(0)| e^(λt) with λ > 0 (the Lyapunov exponent). This makes long-term prediction impossible even though the governing equations are fully deterministic — the term comes from the notion that a butterfly's wingbeat could, in principle, alter the trajectory of a distant weather system weeks later.

Physics

Physics · L5 · Nonlinear Dynamics & Chaos

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Physics · L5 · Nonlinear Dynamics & Chaos

Note~313 words · 2 min

State space and Dirac notation A complete orthonormal basis {|n⟩} obeys the resolution of the identity: Any state can be expanded as |ψ⟩ = Σₙ cₙ|n⟩ with cₙ = ⟨n|ψ⟩, and Σₙ |cₙ|² = 1 (normalisation). Observables and the spectral theorem Obse

Physics

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

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

Note~259 words · 1 min

Friction opposes sliding Static vs kinetic Static friction is the reason a heavy box refuses to budge, then suddenly lurches. You beat the larger static value and the smaller kinetic one takes over. What changes how much friction you get Th

Physics

Physics · L2 · Friction

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Physics · L2 · Friction

Flowchart5 objects

Physics

Physics · L4 · Maxwell's Equations & EM Waves · flowchart

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Physics · L4 · Maxwell's Equations & EM Waves · flowchart

Flashcards9 cards

What does a converging (convex) lens do to parallel light rays passing through it, and where do they end up?1 / 9

It refracts the rays inward so that all of them meet at a single point on the far side of the lens — the focal point. The distance from the lens to this point is the focal length, f.

Physics

Physics · L3 · Lenses & Optical Instruments

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Physics · L3 · Lenses & Optical Instruments

Flowchart9 objects

Physics

Physics · L2 · Pendulums & Periodic Motion · flowchart

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Physics · L2 · Pendulums & Periodic Motion · flowchart

Flashcards8 cards

What makes a circuit a parallel circuit?1 / 8

The components are connected on separate branches, side by side, giving electricity more than one path to choose from.

Physics

Physics · L2 · Parallel Circuits

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Physics · L2 · Parallel Circuits

Flowchart12 objects

Physics

Physics · L3 · Newton's Second Law: Solving for Force, Mass, and Acceleration · flowchart

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Physics · L3 · Newton's Second Law: Solving for Force, Mass, and Acceleration · flowchart

Flashcards12 cards

What are the four kinematic equations for constant acceleration?1 / 12

v = v₀ + at; x = x₀ + v₀t + ½at²; v² = v₀² + 2a(x − x₀); x = x₀ + ½(v₀ + v)t. They relate displacement, velocity, acceleration, and time when a is constant.

Physics

Physics · L4 · Kinematics — Motion in 1D & 2D

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Physics · L4 · Kinematics — Motion in 1D & 2D

Flowchart11 objects

Physics

Physics · L1 · Plucking a Guitar String

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Physics · L1 · Plucking a Guitar String

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