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 Do Wood Blocks Behave in a Collision on a Frictionless Surface?
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What is the tension in the coupling between two trucks on an inclined slope?
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Help Collisions between astroids?
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Bullet Enters/Exits Mass, Mass Slides
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Motion of a Charged Particle in an Electric Field
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Resonance Curve - Do I have enough info?
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Free-body Diagrams for Bicycle and Person sitting on it
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Explain Force & Acceleration for Tension in Rope Around Cylinder Drum
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Does the Equation U·U = ||U||^2 Hold for Complex Vectors?
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Angle of particles after elastic collision
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Rotaional Inertia of a Thin Rod
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Is the soeed of an electron relativistic?
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Impulse momentum theorum with a spring
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Why Does Momentum Affect the Calculation of Final Velocity in Physics Problems?
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Is Coulomb's Law the Correct Equation for This Calculation?
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Momentum and energy in collisions, bullet problem
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Understanding the Equation B = del x A in Electromagnetic Theory
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Rotational Dynamics of a grinding wheel
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0.5V across 1.5m tungsten wire w/cross-sect. area 0.6 mm^2 - Find wire current
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How Is Torque Calculated for a Rectangular Loop in a Magnetic Field?
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Uniform Circular Motion frequency
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Calculate the z component of the torque relative to position
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Bulk modulus and poisson's ratio
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Investigation of resistance of Lightbulb
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Calculating Tension in a Multi-Duck System
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Magnetic Field Calculations for Parallel Wires
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Angular acceleration and speed
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Optimizing Swim and Run Angle for Crossing a River
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Real and Point Particle Systems of a jumper
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At what angle does the light leave the glass
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What is the average force on Superman's chest when hit by 3g bullets at 500 m/s?
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Why does length contraction occur in Lorentz transformations?
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Calculating Work Done by a 2HP Engine to Pump Water
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Direction of a particle in a uniform magnetic field.
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What angle is subtended when using this 270-diopter objective?
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Physics and Forensics-Projectile Motion
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Finding tension in suspended shelf
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Impulse & Momentum: Golf Ball & Club Force Calcs
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The Force Between Current-Carrying Conductors
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Optics Question: Object Distance with a Slit and Lens
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Simple Work-Energy Problem is stumping me
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What Are Innovative Physics Extended Essay Topics for the IB Program?
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Calculating Energy Transported by an EM Wave with a 36.5 mV/m E Field
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Equilibrium friction on an incline
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Maximum Velocity for a Banked Curve Without Sliding or Rolling Over
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I'm having trouble with this circuit problem - Power
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Calculate the mass of the block of wood
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How Should You Round Photon Energy Changes in Physics Calculations?
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Does a static/normal force grpah go thorugh the origin?
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Magnitude of the average resultant force in KN on the truck
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Calculate Radius & Period of Revolution of Doubly Charged He Atom
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Solving the Tension Equation: Understanding the Progression
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How Much Force to Overcome a Step with a Wheel?
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Understanding Capacitance: Calculating Electric Fields with an Air Gap Capacitor
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What is the frequency of the signal?
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Falling Rods Conceptual Question
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How much energy is transported by an EM wave with a given E field strength?
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Which collision equations go with which situations?
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How do I integrate a definite integral with variable limits and constants?
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How would I go about solving a problem like this? About acceleration
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Collisions and changing frame of reference?
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What Was the Initial Velocity of an Object That Traveled 120m in 5.60s?
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Projectile Motion and maximum height
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Electron shot between plates (electric field)
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Pendulum of length l with mass m at end swings over a peg
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Solving Momentum & Energy Homework: Glider Collision
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Conservation of Momentum and/or Energy
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Finding Kelper's Constant with only radius or period given.
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Calculating Magnetic Field Around Window Frame
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Quick []elastic collision question =)
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Why Does a Tile Floor Feel Colder Than a Carpeted Floor at the Same Temperature?
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Specific Heat Capacity Question
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Power transfer and impedence matching.
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Estimate the radiation pressure of your finger tip
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Simple harmonic motion problem involving matrices
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Impulse/Momentum ball into wall Problem
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Work and kinetic friction coefficient
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Proper description of uniform circular motion
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Equilibrant & box and plank problems
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How Do You Calculate Oscillation Frequency in a Nonlinear System?
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Static Friction & Kinetic Friction
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Light dependent resistor experiment
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Time vs distance Question using Force
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How Do You Calculate the Distance Between Two Slits in a Double Slit Experiment?
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Kinematics: Interesting problem (velocity as a function of distance)
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Induced emf in triangle with changing area
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How Do You Calculate Bx in a Magnetic Field Problem Involving an Electron?
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How Does Lens Thickness Affect Focal Length?
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Is the Velocity of a Point Constant or Variable?
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Water heater and area of sunray gatherer
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Efficiency of a 10%-Efficient Car Engine: Energy Transfer and First Steps
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Determine image distance relative to lens
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Resistance and Resistivity problem
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Am I on the right track with Ampere's Law?
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Resistivity of a stretched wire VS unstretched state
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How Does Pipe Diameter Affect Water Pressure and Flow Velocity?
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Find Magnitude of Buoyant Force on Boat in Water
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Elastic collision in center of mass frame
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When is the Charge and Electric Energy in a Capacitor Half of Its Final Value?
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How Much Kinetic Energy Is Lost in a Collision Between Two Toy Cars?
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