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OpenStem
@openstem · Joined Jul 2026
7420 public items8 groups
Collection4 items
01Physics · L2 · Sound: Pitch, Loudness & Echoes
02Physics · L2 · Sound: Pitch, Loudness & Echoes
03Physics · L2 · How Sonar Measures Distance With an Echo
+1 morePhysics · L2 · Pitch, Loudness & Echoes
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Physics · L2 · Pitch, Loudness & EchoesCollection4 items
01Physics · L2 · Center of Mass & Stability
02Physics · L2 · Center of Mass & Stability
03Physics · L2 · Why Some Objects Tip Over and Others Don't
+1 morePhysics · L2 · Center of Mass & Stability
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Physics · L2 · Center of Mass & StabilityCollection4 items
01Physics · L2 · Curved Mirrors
02Physics · L2 · Curved Mirrors
03Physics · L2 · Concave vs. Convex — What a Curved Mirror Shows You
+1 morePhysics · L2 · Curved Mirrors
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Physics · L2 · Curved MirrorsCollection4 items
01Physics · L2 · Pendulums & Periodic Motion
02Physics · L2 · Pendulums & Periodic Motion
03Physics · L2 · What Actually Changes a Pendulum's Period
+1 morePhysics · L2 · Pendulums & Periodic Motion
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Physics · L2 · Pendulums & Periodic MotionCollection4 items
01Physics · L2 · Mechanical Advantage: Levers & Pulleys
02Physics · L2 · Mechanical Advantage: Levers & Pulleys
03Physics · L2 · Finding a Lever's Mechanical Advantage
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Physics · L2 · Mechanical Advantage: Levers & PulleysCollection4 items
01Physics · L2 · Electrical Power & Energy
02Physics · L2 · Electrical Power & Energy
03Physics · L2 · From Watts to a Power Bill
+1 morePhysics · L2 · Electrical Power & Energy
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Physics · L2 · Electrical Power & EnergyCollection4 items
01Physics · L2 · Thermal Expansion
02Physics · L2 · Thermal Expansion
03Physics · L2 · Why a Metal Jar Lid Loosens With Hot Water
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Physics · L2 · Thermal ExpansionCollection4 items
01Physics · L2 · Magnetic Field Lines & Earth's Magnetism
02Physics · L2 · Magnetic Field Lines & Earth's Magnetism
03Physics · L2 · Reading a Magnetic Field Line Diagram
+1 morePhysics · L2 · Magnetic Field Lines & Earth's Magnetism
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Physics · L2 · Magnetic Field Lines & Earth's MagnetismCollection4 items
01Physics · L2 · Echoes, Sound Reflection & Sonar
02Physics · L2 · Echoes, Sound Reflection & Sonar
03Physics · L2 · Measuring Distance With an Echo
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Physics · L2 · Echoes, Sound Reflection & SonarCollection4 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 · L2 · Springs & Hooke's LawCollection6 items
01Simple Harmonic Motion: y = A·sin(ω·x)
02Damped Oscillation: y = e^(−k·x)·sin(b·x)
03Projectile Trajectory: y = x·tan(a) − x²/40
+3 morePhysics · L3 · Physics in Motion
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Physics · L3 · Physics in MotionCollection5 items
01Physics · L3 · Newton's Second Law
02Physics · L3 · Newton's Second Law
03Physics · L3 · Newton's Second Law: Solving for Force, Mass, and Acceleration
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Physics · L3 · Newton's Second LawCollection4 items
01Physics · L3 · Circular Motion
02Physics · L3 · Circular Motion & Centripetal Force
03Physics · L3 · Finding the Centripetal Force in Different Scenarios
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Physics · L3 · Circular MotionCollection4 items
01Physics · L3 · Universal Gravitation
02Physics · L3 · Universal Gravitation & Orbits
03Physics · L3 · Why a Satellite Stays in Orbit
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Physics · L3 · Universal GravitationCollection5 items
01Physics · L3 · Conservation of Momentum
02Physics · L3 · Conservation of Momentum
03Physics · L3 · Conservation of Momentum
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Physics · L3 · Conservation of MomentumCollection5 items
01Physics · L3 · Work-Energy Theorem
02Physics · L3 · Work-Energy Theorem: Practice Problems
03Physics · L3 · The Work-Energy Theorem
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Physics · L3 · Work-Energy TheoremCollection5 items
01Physics · L3 · Wave Properties
02Physics · L3 · Wave Properties
03Physics · L3 · Wave Properties: Wavelength, Frequency, and Speed
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Physics · L3 · Wave PropertiesCollection5 items
01Physics · L3 · Resistor Circuits
02Physics · L3 · Resistor Circuits
03Physics · L3 · Series or Parallel? Choosing the Formula
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Physics · L3 · Resistor CircuitsCollection5 items
01Physics · L3 · Reflection & Refraction
02Physics · L3 · Snell's Law Practice
03Physics · L3 · Reflection, Refraction & Snell's Law
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Physics · L3 · Reflection & RefractionCollection4 items
01Physics · L3 · Projectile Motion
02Physics · L3 · Projectile Motion: Range, Height, and Time of Flight
03Physics · L3 · Solving a Projectile Motion Problem
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Physics · L3 · Projectile MotionCollection4 items
01Physics · L3 · Torque & Rotational Equilibrium
02Physics · L3 · Torque & Rotational Equilibrium
03Physics · L3 · Checking Rotational Equilibrium on a See-Saw
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Physics · L3 · Torque & Rotational EquilibriumCollection4 items
01Physics · L3 · Simple Harmonic Motion: Springs & Pendulums
02Physics · L3 · Simple Harmonic Motion: Springs & Pendulums
03Physics · L3 · Choosing the Right SHM Period Formula
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Physics · L3 · Simple Harmonic Motion: Springs & PendulumsCollection4 items
01Physics · L3 · Electric Fields & Coulomb's Law
02Physics · L3 · Electric Fields & Coulomb's Law
03Physics · L3 · Finding the Force Between Two Charges
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Physics · L3 · Electric Fields & Coulomb's LawCollection4 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
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Physics · L3 · Magnetic Force on Moving ChargesCollection4 items
01Physics · L3 · Specific Heat & Calorimetry
02Physics · L3 · Specific Heat & Calorimetry
03Physics · L3 · Solving a Calorimetry Problem
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Physics · L3 · Specific Heat & CalorimetryCollection4 items
01Physics · L3 · Lenses & Optical Instruments
02Physics · L3 · Lenses & Optical Instruments
03Physics · L3 · What Kind of Image Does This Lens Form?
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Physics · L3 · Lenses & Optical InstrumentsCollection4 items
01Physics · L3 · The Doppler Effect
02Physics · L3 · The Doppler Effect: Why a Passing Siren Changes Pitch
03Physics · L3 · Reading a Doppler Shift Scenario
+1 morePhysics · L3 · The Doppler Effect
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Physics · L3 · The Doppler EffectCollection4 items
01Physics · L3 · Newton's Third Law
02Physics · L3 · Newton's Third Law
03Physics · L3 · Identifying an Action-Reaction Pair
+1 morePhysics · L3 · Newton's Third Law
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Physics · L3 · Newton's Third LawCollection4 items
01Physics · L3 · 1D Kinematics: The SUVAT Equations
02Physics · L3 · 1D Kinematics: The SUVAT Equations
03Physics · L3 · Picking a SUVAT Equation
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Physics · L3 · 1D Kinematics: The SUVAT EquationsCollection4 items
01Physics · L3 · Electric Potential & Capacitors
02Physics · L3 · Electric Potential & Capacitors
03Physics · L3 · How a Camera Flash Capacitor Works
+1 morePhysics · L3 · Electric Potential & Capacitors
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Physics · L3 · Electric Potential & Capacitors