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Physics: explore STEM content (page 5 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.

Content Groups1

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Flowchart7 objects

Physics

Physics · L1 · Balanced & Unbalanced Forces · flowchart

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Physics · L1 · Balanced & Unbalanced Forces · flowchart

Flowchart13 objects

Physics

Physics · L2 · Float or Sink? Comparing Densities

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Physics · L2 · Float or Sink? Comparing Densities

Quiz6 questions

A firetruck's siren sounds while the truck drives toward a pedestrian on the sidewalk. Compared to the siren's true emitted frequency, what pitch does the pedestrian hear?

AA higher pitchBA lower pitchCThe exact same pitch, just louderDNo sound until the truck passes

Physics

Physics · L3 · The Doppler Effect

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Physics · L3 · The Doppler Effect

Quiz3 questions

A cyclist travels 30 km in 2 hours. What is the cyclist's speed?

A60 km/hB15 km/hC32 km/hD28 km/h

Physics

Physics · L2 · Speed, Distance, and Time

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Physics · L2 · Speed, Distance, and Time

Flowchart5 objects

Physics

Physics · L1 · Fast & Slow · flowchart

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Physics · L1 · Fast & Slow · flowchart

Flashcards11 cards

State the thin lens equation and define each term.1 / 11

1/f = 1/d_o + 1/d_i. f is the focal length, d_o is the object distance from the lens, and d_i is the image distance from the lens (all measured along the optical axis, same units).

Physics

Physics · L4 · Geometric Optics — Lenses & Ray Diagrams

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Physics · L4 · Geometric Optics — Lenses & Ray Diagrams

Flowchart8 objects

Physics

Physics · L2 · Projectile Motion Basics · flowchart

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Physics · L2 · Projectile Motion Basics · flowchart

Flowchart13 objects

Physics

Physics · L2 · Thermal Expansion · flowchart

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Physics · L2 · Thermal Expansion · flowchart

Collection4 items

01Physics · L1 · Batteries & Circuits

02Physics · L1 · Batteries & Simple Circuits

03Physics · L1 · Current Around a Complete Loop

+1 more

Physics

Physics · L1 · Batteries & Circuits

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Physics · L1 · Batteries & Circuits

Collection4 items

01Physics · L1 · Energy in Motion

02Physics · L1 · Energy in Motion

03Physics · L1 · A Swing Turns Stored Energy Into Motion

+1 more

Physics

Physics · L1 · Energy in Motion

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Physics · L1 · Energy in Motion

Quiz8 questions

The electromagnetic field tensor F^μν is defined in terms of the four-potential A^μ as:

A∂^μA^ν + ∂^νA^μB∂^μA^ν − ∂^νA^μCA^μA^νD∂_μ∂^μA^ν

Physics

Physics · L5 · Covariant Electrodynamics

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Physics · L5 · Covariant Electrodynamics

Quiz6 questions

Fusion occurs in stellar cores despite thermal energies being far below the Coulomb barrier because:

AStellar cores are actually hotter than the Coulomb barrier energyBQuantum tunnelling allows a nonzero fusion probability even below the classical barrierCThe Coulomb barrier does not apply inside starsDGravity directly forces nuclei to fuse regardless of charge

Physics

Physics · L5 · Nuclear Astrophysics

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Physics · L5 · Nuclear Astrophysics

Collection7 items

01Physics · L1 · Push and Pull

02Physics · L1 · Magnets

03Physics · L1 · Float and Sink

+4 more

Physics

Physics · L1 · Forces, Light & Sound

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Physics · L1 · Forces, Light & Sound

Flowchart9 objects

Physics

Physics · L1 · Squeezing a Pogo Stick Spring

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Physics · L1 · Squeezing a Pogo Stick Spring

Quiz4 questions

What is white light, like sunlight, actually made of?

AJust one plain color with no others hidden insideBA mix of all the rainbow colors blended togetherCOnly red and blue lightDNo color at all

Physics

Physics · L1 · Rainbows & Mixing Colors

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Physics · L1 · Rainbows & Mixing Colors

Note~286 words · 1 min

Power is a rate Every device uses energy to do its job. Power measures how FAST it's being used, and it depends on both the current flowing and the voltage across the device. P in watts, I in amps, V in volts. One watt means one joule every

Physics

Physics · L2 · Electrical Power & Energy

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Physics · L2 · Electrical Power & Energy

Flowchart11 objects

Physics

Physics · L1 · Sorting Everyday Objects

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Physics · L1 · Sorting Everyday Objects

Quiz8 questions

An order parameter is a quantity that is:

ANonzero in both phases, but larger in the ordered phaseBZero in the disordered phase and nonzero in the ordered phaseCAlways equal to the temperature TDOnly defined for first-order transitions

Physics

Physics · L5 · Phase Transitions & Critical Phenomena

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Physics · L5 · Phase Transitions & Critical Phenomena

Flowchart11 objects

Physics

Physics · L3 · Standing Waves & Resonance · flowchart

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Physics · L3 · Standing Waves & Resonance · flowchart

Flowchart7 objects

Physics

Physics · L1 · Bubbles & Surface Tension · flowchart

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Physics · L1 · Bubbles & Surface Tension · flowchart

Collection4 items

01Physics · L5 · Cosmology — Friedmann Equations & the Expanding Universe

02Physics · L5 · Cosmology: the Friedmann Equations and the Expanding Universe

03Physics · L5 · From the Friedmann Equation to the Universe's Expansion History

+1 more

Physics

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

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

Flashcards8 cards

State Newton's Third Law.1 / 8

For every action force, there is a reaction force equal in size and opposite in direction, acting on a different object.

Physics

Physics · L3 · Newton's Third Law

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Physics · L3 · Newton's Third Law

Note~336 words · 2 min

What makes motion simple harmonic One condition: the restoring force is proportional to displacement and points back toward equilibrium. F = −kx. Everything else follows. Frequency comes from the system, not the swing Pull the pendulum furt

Physics

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

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

Collection4 items

01Physics · L4 · Heat Transfer — Conduction, Convection & Radiation

02Physics · L4 · Heat transfer: conduction, convection, and radiation

03Physics · L4 · Heat Added vs Temperature for a Heated Solid Turning to Liquid

+1 more

Physics

Physics · L4 · Heat Transfer — Conduction, Convection & Radiation

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Physics · L4 · Heat Transfer — Conduction, Convection & Radiation

Flashcards10 cards

What is the center of mass of an object?1 / 10

The center of mass is the single point where all of an object's weight seems to act from — its overall balance point. Support that one point, and the whole object balances, even though its weight is actually spread out through it.

Physics

Physics · L2 · Center of Mass & Stability

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Physics · L2 · Center of Mass & Stability

Flowchart11 objects

Physics

Physics · L3 · How a Camera Flash Capacitor Works

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Physics · L3 · How a Camera Flash Capacitor Works

Flowchart12 objects

Physics

Physics · L3 · Solving a Work-Energy Problem

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Physics · L3 · Solving a Work-Energy Problem

Note~163 words · 1 min

A battery pushes electricity round a loop A battery is a small store of energy. It has two ends called terminals, and electricity needs a path out of one, all the way round, and back into the other. One gap and nothing works A switch is tha

Physics

Physics · L1 · Batteries & Simple Circuits

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Physics · L1 · Batteries & Simple Circuits

Note~226 words · 1 min

Two ways to wire them, two different answers Real circuits rarely have one resistor. How you connect them changes the total resistance the battery sees, and therefore the current. Series: resistances add The same current has to fight throug

Physics

Physics · L3 · Resistor Circuits

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Physics · L3 · Resistor Circuits

Collection4 items

01Physics · L1 · Bubbles & Surface Tension

02Physics · L1 · Bubbles & Surface Tension

03Physics · L1 · Why a Paperclip Can Float on Water

+1 more

Physics

Physics · L1 · Bubbles & Surface Tension

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Physics · L1 · Bubbles & Surface Tension

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