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Physics: explore STEM content (page 26 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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Note~164 words · 1 min

The law, in numbers One newton is the force that accelerates 1 kg at 1 m/s², so N and kg·m/s² are literally the same unit. Rearranging for the unknown Worked values F is the NET force Real objects feel several forces at once. A sled has you

Physics

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

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

Collection4 items

01Physics · L4 · Elasticity — Stress, Strain & Young's Modulus

02Physics · L4 · Elasticity: stress, strain, and Young's modulus

03Physics · L4 · Classifying Deformation by Stress-Strain Behaviour

+1 more

Physics

Physics · L4 · Elasticity — Stress, Strain & Young's Modulus

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Physics · L4 · Elasticity — Stress, Strain & Young's Modulus

Quiz5 questions

What determines the pitch of a sound?

AHow big the vibration isBHow fast the source vibrates (its frequency)CHow far away the listener isDWhat color the vibrating object is

Physics

Physics · L2 · Sound: Pitch, Loudness & Echoes

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Physics · L2 · Sound: Pitch, Loudness & Echoes

Collection4 items

01Physics · L2 · Magnetism & Electromagnets

02Physics · L2 · Magnetism & Electromagnets

03Physics · L2 · Building an Electromagnet

+1 more

Physics

Physics · L2 · Magnetism & Electromagnets

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Physics · L2 · Magnetism & Electromagnets

Flowchart11 objects

Physics

Physics · L1 · Float and Sink

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Physics · L1 · Float and Sink

Flowchart11 objects

Physics

Physics · L1 · Slowest to Fastest

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Physics · L1 · Slowest to Fastest

Flowchart5 objects

Physics

Physics · L3 · Work-Energy Theorem · flowchart

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Physics · L3 · Work-Energy Theorem · flowchart

Flowchart9 objects

Physics

Physics · L2 · Center of Mass & Stability · flowchart

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Physics · L2 · Center of Mass & Stability · flowchart

Flowchart7 objects

Physics

Physics · L1 · Rainbows & Mixing Colors · flowchart

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Physics · L1 · Rainbows & Mixing Colors · flowchart

Flashcards11 cards

What does the Feynman propagator represent physically?1 / 11

The amplitude for a field excitation (a particle) created at one spacetime point y to be found — propagated, possibly faster than the naive classical light-cone picture suggests, but causally consistent overall — and annihilated at another spacetime point x. It is the fundamental building block from which all scattering amplitudes are assembled.

Physics

Physics · L5 · Quantum Field Theory

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Physics · L5 · Quantum Field Theory

Flashcards10 cards

In quantum field theory, what is treated as the fundamental physical object — the particle or the field?1 / 10

The field. A quantum field φ̂(x) is defined at every point of spacetime; what we call a 'particle' is not a fundamental entity but a quantized excitation (a normal mode) of the underlying field. This is the reverse of non-relativistic QM, where a fixed number of particles is promoted to have wavefunctions.

Physics

Physics · L5 · Quantum Field Theory

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Physics · L5 · Quantum Field Theory

Flowchart12 objects

Physics

Physics · L3 · Why an Airplane Wing Generates Lift

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Physics · L3 · Why an Airplane Wing Generates Lift

Flowchart5 objects

Physics

Physics · L2 · Projectile Motion Basics · flowchart

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Physics · L2 · Projectile Motion Basics · flowchart

Flowchart12 objects

Physics

Physics · L5 · Nonlinear Dynamics and Chaos · flowchart

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Physics · L5 · Nonlinear Dynamics and Chaos · flowchart

Flowchart12 objects

Physics

Physics · L3 · Projectile Motion: Range, Height, and Time of Flight · flowchart

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Physics · L3 · Projectile Motion: Range, Height, and Time of Flight · flowchart

Flowchart11 objects

Physics

Physics · L2 · Balanced and Unbalanced Forces

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Physics · L2 · Balanced and Unbalanced Forces

Quiz6 questions

Two resistors, 5 Ω and 15 Ω, are connected in series across a battery. What is the total resistance?

A20 ΩB10 ΩC3 ΩD75 Ω

Physics

Physics · L3 · Resistor Circuits

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Physics · L3 · Resistor Circuits

Quiz7 questions

A gas is heated at constant volume from 200 K to 400 K. What happens to its pressure?

AIt halvesBIt stays the sameCIt doublesDIt quadruples

Physics

Physics · L4 · Kinetic Theory of Gases — 7 Q

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Physics · L4 · Kinetic Theory of Gases — 7 Q

Flowchart15 objects

Physics

Physics · L3 · Choosing the Right SHM Period Formula

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Physics · L3 · Choosing the Right SHM Period Formula

Flashcards9 cards

What tool tells you how hot or cold something is?1 / 9

A thermometer. It measures temperature — a number that tells you how hot or cold something is.

Physics

Physics · L1 · Heat & Temperature

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Physics · L1 · Heat & Temperature

Note~360 words · 2 min

Sound is a pressure wave, and it needs stuff Longitudinal compressions and rarefactions travelling through a medium. No medium, no sound. Speed is set by the balance of stiffness and inertia. Decibels Your ear handles a range of about 10¹³

Physics

Physics · L4 · Sound waves, intensity, and the Doppler effect

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Physics · L4 · Sound waves, intensity, and the Doppler effect

Quiz3 questions

What causes a shadow to form?

ALight bends around objectsBAn object blocks lightCSound bounces off wallsDThe Sun moves

Physics

Physics · L1 · Light and Sound

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Physics · L1 · Light and Sound

Flowchart18 objects

Physics

Physics · L2 · Why a Thrown Ball Follows a Curved Path

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Physics · L2 · Why a Thrown Ball Follows a Curved Path

Flowchart9 objects

Physics

Physics · L2 · Heat Transfer: Conduction, Convection, and Radiation · flowchart

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Physics · L2 · Heat Transfer: Conduction, Convection, and Radiation · flowchart

Quiz8 questions

According to Faraday's law, what actually induces an EMF in a loop?

AA strong magnetic field, regardless of whether it changesBA changing magnetic flux through the loopCAny current flowing nearby, changing or notDThe loop's resistance alone

Physics

Physics · L4 · Electromagnetic Induction

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Physics · L4 · Electromagnetic Induction

Note~382 words · 2 min

Three mechanisms, and how to tell them apart Heat is energy in transit down a temperature gradient. It gets there three ways, and most real situations run all three at once. Conduction: Fourier's law Convection Radiation Specific heat and l

Physics