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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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Flashcards10 cards

Is white light really just one plain color?1 / 10

No! White light, like sunlight, is secretly made of all the rainbow colors mixed together. It only looks plain white because they are all blended.

Physics

Physics · L1 · Rainbows & Mixing Colors

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Flashcards7 cards

A 2 kg cart starts at rest and is pushed by a net force of 10 N over a distance of 4 m. What is its final speed?1 / 7

W_net = F·d = 10 × 4 = 40 J = ΔKE = ½(2)v_f² − 0, so v_f² = 40 and v_f ≈ 6.3 m/s.

Physics

Physics · L3 · Work-Energy Theorem: Practice Problems

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Flowchart7 objects

Physics

Physics · L1 · Simple Machines · flowchart

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Note~345 words · 2 min

What a capacitor stores Not charge, exactly: the plates hold +Q and −Q, so the net charge is zero. What's stored is energy, in the electric field across the gap. One farad is enormous. Real capacitors run from picofarads in radio circuits t

Physics

Physics · L4 · Capacitance and dielectrics

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Flowchart9 objects

Physics

Physics · L3 · Specific Heat & Calorimetry · flowchart

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Flowchart7 objects

Physics

Physics · L1 · Floating & Density · flowchart

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Flowchart5 objects

Physics

Physics · L5 · Covariant Electrodynamics · flowchart

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Quiz5 questions

What does voltage do in a circuit?

AIt pushes current through the circuitBIt slows current downCIt has nothing to do with currentDIt stores current permanently

Physics

Physics · L2 · Introducing Ohm's Law

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Flashcards8 cards

What does the work-energy theorem state?1 / 8

The net work done on an object equals its change in kinetic energy: W_net = ΔKE. If more work goes in than comes out, the object speeds up; if net work is negative, it slows down.

Physics

Physics · L3 · Work-Energy Theorem

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Flowchart7 objects

Physics

Physics · L2 · Introducing Ohm's Law · flowchart

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Collection4 items

01Physics · L1 · Springs & Stretchy Things

02Physics · L1 · Springs & Stretchy Things

03Physics · L1 · Squeezing a Pogo Stick Spring

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Physics

Physics · L1 · Springs & Stretchy Things

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Flowchart13 objects

Physics

Physics · L5 · Four Maxwell Equations to Two Tensor Equations

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Quiz6 questions

A 4 kg object accelerates at 2 m/s². What net force acts on it?

A2 NB6 NC8 ND4 N

Physics

Physics · L3 · Newton's Second Law

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Flowchart11 objects

Physics

Physics · L1 · Shadows Through the Day · flowchart

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Flowchart5 objects

Physics

Physics · L5 · Condensed Matter Physics · flowchart

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Note~258 words · 1 min

Three rules that cover every motion Newton wrote these down in the 1680s. A dropped pencil and a launching rocket both obey all three. First law: things resist change A hockey puck glides for ages because ice gives it almost no friction to

Physics

Physics · L2 · Newton's Three Laws of Motion

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Note~191 words · 1 min

A force that fights sliding Whenever two surfaces touch and try to slide past each other, friction pushes back against that sliding. It's why a rolling ball eventually stops instead of rolling forever, and why your feet grip the ground inst

Physics

Physics · L1 · Friction: Why Things Slow Down

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Flowchart11 objects

Physics

Physics · L3 · Solving a Calorimetry Problem

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Flowchart7 objects

Physics

Physics · L1 · Sound & Music · flowchart

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Note~211 words · 1 min

A machine doesn't reduce the work It changes the force you need, or the direction you push, or both. The total work stays the same. They combine

Physics

Physics · L2 · Simple Machines

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Flowchart9 objects

Physics

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

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Note~288 words · 1 min

Continuity: the fluid has nowhere else to go Incompressible fluid in a pipe can't pile up or vanish partway along. So the same volume must cross every section every second. That's why a hose sprays further when you squeeze the end with your

Physics

Physics · L3 · Fluid Dynamics: Continuity & Bernoulli's Principle

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Flashcards9 cards

Define the critical exponent β and state the scaling law it appears in.1 / 9

β governs how the order parameter vanishes as T approaches T_c from below:

Physics

Physics · L5 · Phase Transitions & Critical Phenomena

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Flowchart5 objects

Physics

Physics · L2 · Wave Basics · flowchart

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Flowchart12 objects

Physics

Physics · L1 · Touching Something Hot or Cold

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Flowchart13 objects

Physics

Physics · L3 · The Laws of Thermodynamics & Heat Engines · flowchart

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Flowchart9 objects

Physics

Physics · L4 · Heat transfer: conduction, convection, and radiation · flowchart

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Collection4 items

01Physics · L5 · Superconductivity — BCS Theory & the Meissner Effect

02Physics · L5 · Superconductivity: BCS Theory and the Meissner Effect

03Physics · L5 · Superconducting Response to an External Magnetic Field

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Physics

Physics · L5 · Superconductivity — BCS Theory & the Meissner Effect

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Flowchart11 objects

Physics

Physics · L5 · The Higgs Mechanism: From Symmetric Vacuum to Massive Gauge Bosons

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Flowchart13 objects

Physics

Physics · L4 · Elasticity: stress, strain, and Young's modulus · flowchart

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Explore STEM Content

Physics

Explore STEM Content

Physics

Physics · L1 · Rainbows & Mixing Colors

Physics · L3 · Work-Energy Theorem: Practice Problems

Physics · L1 · Simple Machines · flowchart

Physics · L4 · Capacitance and dielectrics

Physics · L3 · Specific Heat & Calorimetry · flowchart

Physics · L1 · Floating & Density · flowchart

Physics · L5 · Covariant Electrodynamics · flowchart

Physics · L2 · Introducing Ohm's Law

Physics · L3 · Work-Energy Theorem

Physics · L2 · Introducing Ohm's Law · flowchart

Physics · L1 · Springs & Stretchy Things

Physics · L5 · Four Maxwell Equations to Two Tensor Equations

Physics · L3 · Newton's Second Law

Physics · L1 · Shadows Through the Day · flowchart

Physics · L5 · Condensed Matter Physics · flowchart

Physics · L2 · Newton's Three Laws of Motion

Physics · L1 · Friction: Why Things Slow Down

Physics · L3 · Solving a Calorimetry Problem

Physics · L1 · Sound & Music · flowchart

Physics · L2 · Simple Machines

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

Physics · L3 · Fluid Dynamics: Continuity & Bernoulli's Principle

Physics · L5 · Phase Transitions & Critical Phenomena

Physics · L2 · Wave Basics · flowchart

Physics · L1 · Touching Something Hot or Cold

Physics · L3 · The Laws of Thermodynamics & Heat Engines · flowchart

Physics · L4 · Heat transfer: conduction, convection, and radiation · flowchart

Physics · L5 · Superconductivity — BCS Theory & the Meissner Effect

Physics · L5 · The Higgs Mechanism: From Symmetric Vacuum to Massive Gauge Bosons

Physics · L4 · Elasticity: stress, strain, and Young's modulus · flowchart