# Explainers [1–100 of 747 explainers]

- Interference of Light Waves
- The Electric Potential Difference Provided by Cells
- Radioactive Contamination
- The Magnetic Field due to a Current in a Solenoid
- Electrical Resistance
- Voltmeters
- Interpreting Graphs of Motion
- The Moving-Coil Galvanometer
- Electric Current
- Mechanical Work
- Stars and Galaxies
- Calculating Speed from Distance–Time Graphs
- Displacement
- Transistors
- Electric Potential Difference
- Resultant Motion and Force
- Solubility Product
- Ionic Equations
- Alternating Current Ammeters
- Center of Gravity of Particles
- Center of Gravity of Uniform Rods
- Center of Gravity of Laminas
- The Negative Mass Method
- Emission and Absorption Spectra
- Cells in Series
- Kinetic Energy
- The Relationship between Mass and Weight
- Calculating the Electric Current in a Wire
- Relating Force, Pressure, and Area
- Impedance of Alternating Current Circuits
- Velocity
- Rotational Kinematics
- Measurement Error
- Central Angles and Arcs
- What Is Chemistry?
- Instantaneous Speed
- Parallel Circuits
- Resistance and Resistivity of Conductors
- Moment of a Force about a Point in 2D: Vectors
- Radioactivity
- Properties of Nitrogen
- Electromotive Force and Internal Resistance
- Sources of Radiation
- The Formation of the Solar System
- The Components and Operation of Lasers
- Combining Uncertainties
- Newton’s Second Law of Motion
- Combining Function Transformations
- Evaluating Trigonometric Ratios given the Value of Another Ratio
- Evaluating Trigonometric Functions with Special Angles
- Electron Energy Level Transitions
- Applications of Radioactivity
- Design of the Ammeter
- Scale Diagrams
- Equations of Parallel and Perpendicular Lines
- Tangents of a Circle
- Angles of Intersecting Lines in a Circle
- Linear–Quadratic Systems of Equations
- The Pythagorean Theorem in 3D
- Perpendicular Bisector of a Chord
- Dimensional Analysis
- Resonance in Alternating Current Circuits
- Measuring Lengths
- Ambiguous Case of the Law of Sines
- Newton’s Third Law of Motion
- Measuring Temperatures
- Circles
- Series Circuits
- Photon Momentum
- Centripetal Force
- Related and Correlated Angle Identities
- The Quantization of Electromagnetic Radiation
- Ohm’s Law
- Electric Current
- The Power of Electrical Components
- Polar Form of a Vector
- Inscribed Angles Subtended by the Same Arc
- Moles
- Finding the Components of a Vector
- Probability of Simple Events
- Relationships between Chords and the Center of a Circle
- Oxidization and Reduction
- Applications of Derivatives on Rectilinear Motion
- Rank of a Matrix: Determinants
- Molar Gas Volume
- Perpendicular Distance from a Point to a Line on the Coordinate Plane
- Redox Reactions
- The Magnetic Field due to a Current in a Straight Wire
- Orbital Speed
- Matter Waves
- Electron Energy Levels
- Calculating pH
- Inductance
- Angles of Elevation and Depression
- Triangle Similarity Criteria and Their Applications
- Solving Reciprocal Trigonometric Equations
- Solving Trigonometric Equations with the Double-Angle Identity
- Gravitational Potential Energy
- Inscribed Angles in a Circle
- Function Transformations: Dilation