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Physics: explore STEM content (page 19 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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Flashcards9 cards

Name the four fundamental force carriers (gauge bosons) of the Standard Model and the interaction each mediates.1 / 9

Photon (γ) — electromagnetism. Gluon (g) — strong interaction. W± and Z⁰ bosons — weak interaction. (Gravity has no confirmed Standard Model carrier; the hypothesized graviton lies outside the SM.)

Physics

Physics · L5 · Particle Physics

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Physics · L5 · Particle Physics

Quiz5 questions

What actually happens when you rub a balloon on your hair?

AElectrons move from your hair onto the balloonBThe balloon becomes magneticCNew electrons are created inside the balloonDNothing changes — rubbing has no effect

Physics

Physics · L2 · Static Electricity

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Physics · L2 · Static Electricity

Collection4 items

01Physics · L3 · Magnetic Force on Moving Charges

02Physics · L3 · Magnetic Force on Moving Charges

03Physics · L3 · Tracing the Magnetic Force on a Moving Charge

+1 more

Physics

Physics · L3 · Magnetic Force on Moving Charges

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Physics · L3 · Magnetic Force on Moving Charges

Note~79 words · 1 min

Oscillations you can change A mass on a spring, a pendulum, a sound wave: they all repeat on a regular cycle. The graph below is a sine wave. Move the sliders and watch what each one controls.

Physics

Physics · L3 · Seeing Oscillations

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Physics · L3 · Seeing Oscillations

Note~257 words · 1 min

Water has a stretchy skin The very top layer of water behaves differently from the water underneath. Those top molecules pull on each other sideways, making something like a thin stretchy skin across the surface. That's surface tension. It

Physics

Physics · L1 · Bubbles & Surface Tension

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Physics · L1 · Bubbles & Surface Tension

Note~499 words · 2 min

Three ways a nucleus sheds trouble An unstable nucleus has either too much energy or the wrong neutron-to-proton ratio. It emits something to fix that. Half-life A single nucleus decays at random. A trillion of them decay on a curve you can

Physics

Physics · L4 · Nuclear physics: radioactivity, decay, and binding energy

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Physics · L4 · Nuclear physics: radioactivity, decay, and binding energy

Quiz6 questions

A metal spoon left standing in a pot of hot soup slowly becomes warm all along its handle. Which type of heat transfer is this?

AConductionBConvectionCRadiationDEvaporation

Physics

Physics · L2 · Heat Transfer

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Physics · L2 · Heat Transfer

Note~379 words · 2 min

Equal, opposite, and on two different objects Push on something and it pushes back on you exactly as hard. That's the law. The part people miss is the last clause. Same force, wildly different result A bullet and a recoiling rifle feel forc

Physics

Physics · L3 · Newton's Third Law

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Physics · L3 · Newton's Third Law

Quiz7 questions

A converging lens has f = 15 cm. An object is placed 45 cm from the lens. Find the image distance.

Ad_i = 11.25 cmBd_i = 22.5 cmCd_i = 30 cmDd_i = 60 cm

Physics

Physics · L4 · Geometric Optics — 7 Q

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Physics · L4 · Geometric Optics — 7 Q

Flowchart11 objects

Physics

Physics · L1 · Balanced & Unbalanced Forces · flowchart

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Physics · L1 · Balanced & Unbalanced Forces · flowchart

Collection5 items

01Physics · L4 · Rotational Dynamics

02Physics · L4 · Rotational Dynamics

03Physics · L4 · Rotational Dynamics, Torque & Angular Momentum

+2 more

Physics

Physics · L4 · Rotational Dynamics

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Physics · L4 · Rotational Dynamics

Flowchart11 objects

Physics

Physics · L3 · Universal Gravitation & Orbits · flowchart

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Physics · L3 · Universal Gravitation & Orbits · flowchart

Flowchart7 objects

Physics

Physics · L1 · Energy in Motion · flowchart

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Physics · L1 · Energy in Motion · flowchart

Flashcards8 cards

What is an electric circuit?1 / 8

A complete loop that electricity can flow around, from a power source (like a battery), through wires and components, and back again.

Physics

Physics · L2 · Series Circuits

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Physics · L2 · Series Circuits

Flowchart11 objects

Physics

Physics · L2 · Reading a Magnetic Field Line Diagram

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Physics · L2 · Reading a Magnetic Field Line Diagram

Flashcards7 cards

What is friction?1 / 7

Friction is a rubbing force between two surfaces that touch each other. It slows down or stops things that are sliding.

Physics

Physics · L1 · Friction: Why Things Slow Down

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Physics · L1 · Friction: Why Things Slow Down

Flowchart15 objects

Physics

Physics · L2 · Building an Electromagnet

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Physics · L2 · Building an Electromagnet

Quiz6 questions

What is a pendulum?

AAnything that hangs from a point and swings freely back and forthBAny object that is roundCA type of lightDAnything that floats on water

Physics

Physics · L1 · Swings & Pendulums

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Physics · L1 · Swings & Pendulums

Flashcards7 cards

What key assumption underlies the FLRW metric, and what does it imply about the universe's large-scale structure?1 / 7

The cosmological principle: on large enough scales, the universe is homogeneous (the same everywhere) and isotropic (the same in every direction). This forces spacetime's spatial geometry to be one of constant curvature, described by a single time-dependent scale factor a(t) and a curvature constant k.

Physics

Physics · L5 · Cosmology — Friedmann Equations & the Expanding Universe

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Physics · L5 · Cosmology — Friedmann Equations & the Expanding Universe

Flowchart13 objects

Physics

Physics · L4 · Solving a Rotational Dynamics Problem

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Physics · L4 · Solving a Rotational Dynamics Problem

Flowchart7 objects

Physics

Physics · L3 · Projectile Motion · flowchart

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Physics · L3 · Projectile Motion · flowchart

Flowchart12 objects

Physics

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

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

Flowchart11 objects

Physics

Physics · L3 · Why a Satellite Stays in Orbit

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Physics · L3 · Why a Satellite Stays in Orbit

Flowchart8 objects

Physics

Physics · L4 · Magnetism: the Biot–Savart law and Ampere's law · flowchart

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Physics · L4 · Magnetism: the Biot–Savart law and Ampere's law · flowchart

Flashcards7 cards

Two climbers each climb the same 10 m staircase. Climber A takes 20 seconds, Climber B takes 40 seconds. Who does more work?1 / 7

Neither — they do the same amount of work, because they lift the same weight up the same height. Work does not depend on time.

Physics

Physics · L2 · Work & Power: Practice Problems

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Physics · L2 · Work & Power: Practice Problems

Collection5 items

01Physics · L4 · Geometric Optics — Lenses & Ray Diagrams

02Physics · L4 · Geometric Optics — Mirrors & Image Formation

03Physics · L4 · Geometric Optics: Lenses, Mirrors, and Ray Diagrams

+2 more

Physics

Physics · L4 · Geometric Optics

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Physics · L4 · Geometric Optics

Flowchart7 objects

Physics

Physics · L3 · Solving a Newton's Second Law Problem

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Physics · L3 · Solving a Newton's Second Law Problem

Flowchart7 objects

Physics

Physics · L4 · Electromagnetic Induction · flowchart

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Physics · L4 · Electromagnetic Induction · flowchart

Flashcards11 cards

State the law of reflection.1 / 11

The angle of incidence equals the angle of reflection, both measured from the normal — the line perpendicular to the surface at the point of contact. In symbols, θᵢ = θᵣ.

Physics

Physics · L3 · Reflection & Refraction

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Physics · L3 · Reflection & Refraction

Flowchart19 objects

Physics

Physics · L4 · Determining image type from object distance vs focal length

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Physics · L4 · Determining image type from object distance vs focal length

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