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.
How Does Geometry Explain the r/R Ratio of .225 in Sphere Packing?
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Calculating Time Dilation: Apollo's Record-Breaking Speed and Earth's Clocks
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Calculating Electric Field Strength Between Two Disks with 24 Volt Power Supply
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Electric field of a charged ring
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Kinetic Energy/Circular Motion and figuring out point charges
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What's the deceleration of the car?
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Drawing Electric Field Lines and Equipotential Lines
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Uniform Motion Problem: How Far is the Island?
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Velocity and acceleration vectors problem
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Solve Acceleration Problem: Plot Distance vs Time
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Flux Calculation for Non-Uniform Electric Field on Cube Sides
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Electric flux through a multihedral face
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Catch-up problem, can't seem to get it
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Calculating Force and Torque on a Dipole
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The Time of Return for a Particle Undergoing Negative Acceleration
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Charge Distribution on a Conducting Shell
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What is the Relationship Between the Mirror Equation and the Lens Equation?
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Maximum Resting Mass and Acceleration in a Friction System
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Quick question on thermal expansion.
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What Are the Limitations of Charge Values in Physics?
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What Is the Correct Way to Calculate Net Torque?
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How Do You Calculate the Bending Angle of a Bimetallic Strip?
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Torque and vector related. Is this possible.
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Calculate how many Kgs of water flows through the plant
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Does Adding Weight to a Suitcase Increase Its Natural Frequency?
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Turntable Rotation with weight on edge v. in the center
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What is the Total Displacement of a Car Driven in Multiple Directions?
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Static Electricity and Triangles
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How Do You Solve the Exploding Projectile Problem in Physics?
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Calculating Force Exerted on 17-kg Box from 90-N Force Acting on 11-kg Box
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How Hot Does a Flashlight Bulb's Filament Get When Turned On?
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Static Electricity and particles
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How far does the bird travel before the trains collide?
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How Far Does a Charged Particle Travel Before Stopping Due to Repulsive Force?
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Halliday Chapter 25: Final Charge of Uncharged Capacitors Problem
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Calculating external work done in electric field
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Electric & Gravitational Fields
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Relative Velocity of an escalator
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Electric field at the center of curvature of a solid hemisphere
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Electron beam of a computer monitor
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Thermodynamics of Mixing Ice and Water in a Glass Container
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How Do You Solve Basic Impulse-Momentum Physics Problems?
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Help with calculating pendulum problems
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I with this question on velocity/displacement
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Electric field just beyond surface of proton
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Net Displacement (Probably very easy, but I don't get it)
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Understanding Wave Frequency and Tension: V=fλ vs V=√T/μ
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How Is Electric Flux Calculated Using Gauss's Law for a Nonconducting Cylinder?
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Voltage drop across a capacitor
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Solving Vector Problems in Physics: Hot Air Balloon and Wind Velocity
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Solving Block on Incline Homework Problem
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What is the speed of a falling box?
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Constant Electric Field and Potential
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Calculate the x-component of the electric field
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How Do Currents Affect Swimming Across a River in Physics?
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Angle of Attack: Why Pilots Fly Differently at High & Low Altitude
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Depth of a well (using a stone and sound)
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Observing Single Electron Diffraction
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Dynamics: Projectile Motion velocity equation
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Physics: Projectile Motion with different starting and ending heights?
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Voltage, current, and power wasted
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Electrostatic potential and electric fields
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How to find vertical comp. of velcocity?
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Electromagnetic waves Conceptual help please
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What is the Average Speed of a Boat Across a Lake?
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How Much Kinetic Energy is Lost in a Bullet-Block Collision?
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How Is Force Calculated Between Charged Parallel Plates?
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Why Am I Getting the Wrong Electric Field Intensity Calculation?
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Direction of the force on the ramp due to the sliding block
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I'm having trouble visualizing the orientation of the equipotential surfaces.
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Gm1m2 / d2 = kq1q2 / d2What is the value of Q to maintain the present orbit?
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Solving Force and Rest with a Skater on Ice
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How Much Charge Is Needed to Levitate a Car Using Static Electricity?
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Basic Electricity (what i should know but don't)
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Calculating the time it takes for something to fall over long distances
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What Is the Equivalent Capacitance of Capacitors in Series and Parallel?
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Basic electricity & incandescent bulb numericals
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Kinetics Question (spent over 7 hours on this)
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How Long Does It Take for Speed to Halve with Non-Constant Acceleration?
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Need help on some conceptual physics problems
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Finding hight of an inclined palne with its lengh and a force
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Understanding Velocity and Acceleration in Uniform Circular Motion
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Volume over Number of Particles.
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Finding the Optimal Mass for a Pressure Cooker Cover
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Understanding 1/cos(x) with x=pi/4: Simplifying to Root 2
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Magnitude of acceleration of a stationary mass
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Mutiply Vectors: Find ?i + ?j + ?k
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Maximum and Minimum Forces for Elevator Design
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Verifying gravity from our lab.
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How to Calculate the Height of a Falling Object Using Basic Physics Equations?
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Calculating Motor Mass for Desired Torque
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Solving for Unknown Vectors in Vector Addition Equations
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Time at which a projectile reaches a certain height
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What is the result of combining vectors A and B?
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A Square Loop of Wire falling through a Magnetic Field
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Vectors in unit-vector notation
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Terminal velocity for big objects
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Significant Digits: Estimating Next Digit
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Derivation of equation for sliding object
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Electric Field/Gauss' law of cylinder and shell
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