Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Centripetal Motion problem -- A bead sliding around a horizontal loop
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Explaining the Equation: ½ mu2 = ½ mv2 + ½ ms2
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How Can We Solve the Connected Bodies Problem with a Resultant Force of 39N?
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Simple conceptual reference frame question
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Entropy Change & Heat Transferred to a Gas
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Elastic and inelastic collisions
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2 Dimensional Motion: Net force at an angle
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Is the RMS Mean Free Path Equal to the Mean Free Path?
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Why position times mass is equal to 0 here (vanishes)?
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What is the best shape for a soccer goal post?
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A slightly complex pully problem missing the final step
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Dog Grooming Services""Dog Grooming: Your Pup's Pampering & Happiness
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Understanding Direction of Unit Vectors r roof & phi roof
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Vectors along different coordinate axes
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Virtual displacement for a block sliding down a wedge
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To find total work done from multiple reversible processes
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Graph of waveform across diode shown by CRO
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Force required to hold a fire hose
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Relationship between magnitude of current and magnetic field
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How to find centroid of a hemisphere using Pappus's centroid theorem?
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Help with a modified Kepler potential
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Kinematics: two runners with different and non-constant accelerations
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Work & Energy (Question on Classical Mechanics/Slope based Problems)
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Calculating Velocity when Stuntman Jumps from 1.25m Height
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Help Needed: Solving y = A sin({2*10^6 ({\pi / 3 -\pi t }) + \phi })
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Computing Errors when Data Sets are Given
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Flux of a non-uniform E field through the face of a cube
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Where Is the Error in This Power Transmission Calculation?
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Force & Energy Changes of Air by Helicopter
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Bead sliding on a Vertical Circular Loop versus in Free Fall
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How much of the wooden timber was submerged in water?
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Why used $\cos\theta$ for $\text{y}$ axis or, gravitational force?
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How many walls can this battery-powered crane lift before recharging?
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Electric Field on the surface of charged conducting spherical shell
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Motion of Rolling Cylinder in Fixed Cylinder: Confusing Constraint Condition
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Is w Constant in Damped Oscillations?
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Angular momentum of a particles in the form of ##L = mr^2\omega##
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Maxwell's Distribution Law (Thermal Physics)
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Relating Values in Equations: Finding the Role of L
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Linear Motion and Linear Momentum
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Gauss' law in differential form
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What is the R^3 in Kepler's 3rd Law?
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How to compute how much energy is released in nuclear fusion?
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Relationship between B and induced EMF using Faraday's Law
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IsaacPhysics - Climbing up a corner -
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Question about direction of movement of water molecule
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Efficiency of an Electric motor pulling a truck up an inclined plane
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Comparison of Change in Entropy
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Equation connecting potential and potential energy of a distribution
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Tricky conceptual Projectile motion question
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Why is this equation from Purcell's EM textbook correct?
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Projectiles Question -- Tiger Woods drives a golf ball on the Moon
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Reason for glass rod losing electrons
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ODE Methods for Physicists (related question)
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Question on First Law of Thermodynamics (Paramagnet)
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COVID-19: How to Stay Safe & Healthy
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How does mirror symmetry for resistance work?
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Help! I'm Not Sure What I Did Wrong in Evaluating MOI of a Sphere
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Electric flux through ends of an imaginary cylinder
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Understanding the Mass-Length Relation: Solving for V in Simple Equation
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How to picture a radial field around a 3d object?
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What are the Simplifying Assumptions for Calculating Eddy Current Forces?
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Doubt related to notation used in writing Maxwell's equations
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2 Spheres of Charges and their Interaction
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What happens when a conducting sphere rubs against metal?
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Doppler shift between a moving ship on the ocean and a satellite in LEO
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Calculating Magnetic Field Strength and Force of Eddy Currents in a Solenoid
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Finding out the rotational speed of a mass
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What does negligible resistance mean?
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Node-Voltage Method for Calculating Power Delivered by Dependent Voltage Source
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How to find the heat energy produced in a resistor?
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Find the unknown mass on a inclined rope pulley system.
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What does it mean for an object to act as the "ground"?
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Solving Photon Energy with Equations: Am I Right?
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Current due to magnetic monopole passing through a wire loop
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Pressure change in pipe due to sudden closure of valve
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Finding the potential difference between 2 points in a circuit
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[Electrical force] 2 balls hanging from ceiling, angled
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Understanding Spherical Symmetry of Electron Clouds in External Fields
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[Electrical force] 2 balls hanging from ceiling
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What is the Role of Torque in Holding a Sphere Against a Wall?
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Input Resistance of this BJT Amplifier
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[Electrical force] Electrical charge in equilateral triangle
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Swinging a hanging copper ring with a bar magnet
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Where Did I Go Wrong in Calculating the Charge's Movement?
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Force Diagrams for a Combined Mass
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Gauss's Law application in Electrostatics
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Magnitude of electric field E on a concentric spherical shell
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How to Derive the Range of a Projectile on an Inclined Plane?
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What Causes Overcharging and Excess Voltage in Car Batteries?
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Force on a dipole in a non uniform electric field
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Converting Units: A Beginner's Guide
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Flux density and Divergence of Electric field
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Unanswered: Unraveling the Mystery of Extended Thinking
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Electron motion after collision in a magnetic field
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How Is Ampere's Law Applied to Calculate Magnetic Fields?
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Integrating from R to r: Potential Contribution & Reasoning
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Hiking the Appalachian Trail: A Beginner's Guide
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Kinetic and potential energy of a particle attracted by charged sphere
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Signs of the voltage drops in this LC Circuit
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