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.
Space Part 1 -- Why does NASA launch spacecraft toward the East?
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Work done by product gas in reversible adiabatic expansion
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Current through Point or Cross Sectional Area
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Net Electric Field Between Two Point Charges
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Does Increasing the Area of a Loop in a Magnetic Field Induce Current?
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Energy dissipated in 3-cars collision
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Need help on how to find the uncertainty in this question
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How to Determine the Height of an Object Dropped at a Given Speed?
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Finding uncertainty for index of refraction
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A few conceptual momentum questions
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Electric potential on concentric spheres
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Cylinder Equilibrium (2012 F = ma #12)
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Netforce of spring, hookes law. help
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Calculate acceleration of a ship fired from a cannon
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Solving Heat Energy Dissipation for a Falling Magnet
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Physics Gravity Problem and Kinetic Friction
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How Do You Calculate the Angle of an Emerging Light Beam in Refractive Layers?
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[Uni Physics w/ calc] Boat crossing a river
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Kinematics problem -- A lift ascends from rest with uniform acceleration
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Two charges, Electrical Potential
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The time average potential of neutral hydrogen atom
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[Intro QM] A bit confused on spin of system notation
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Physics in vertical jump and basball hit
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Finding average horizontal force?
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Jumping on a Spring-Like Trampoline problem
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Gas undergoing isothermic compression
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LASER Operating At A Certain Frequency
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Density of Liquid: 1667.7kg/m^3 | Solving Buoyancy Q.
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How Much Velocity is Needed at Point A to Leave the Track at Point B?
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Person walking on the circumference of a disc
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Working With 1D Constant Acceleration Kinematics
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Acceleration of a Falling Bowling Ball: Effects of Rope Cutting
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Use molar mass of D2O to calculate the density of heavywater
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Torque Plus Power In Relation to Velocity
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DISPLACEMENT-TIME graphs question
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Pointlike charge - electric potential
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Fluid Mechanics: Cone-Plate viscometer
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Resultant Vector Homework: Min Value of |A+B+C|
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Newton's Third Law of Motion - Help
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Why does Asin(kx)sin(wt) represent a standing wave?
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Gravity force between Earth and Moon from this angle
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Find velocity of a cart using a spring at an angle
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Why is my answer wrong? Projectile Motion
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How High Does a Small Ball Rise After Colliding with a Superball?
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Electric Field at Center of Square: Mag & Dir
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Speed of satellite orbiting around the Earth
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Finding velocity (having trouble interpreting the question
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The relative resistance of a filament vs. a conductor
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How long does an electron need to absorb energy
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What is the acceleration of a thrown ball relative to the ground?
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Calculate Intensity of Sound Waves at 3.0 m from Source
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Relation between energy annd pressure
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Finding terminal voltage without voltmeter
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Electric field and potential of a charged disc
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Find an expression for the electric field(Mastering Physics)
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Physics question from my test, having a hard time solving it (Lorentz Force)
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Period and Tension of a Pendulum
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Application of the properties of light
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Average speed? -- Homework problem
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Kirchoff's Laws for Currents in a Circuit
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Kirchoff's Laws Current [Problem 1]
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Friction & Forces - Calculate Force on Wheaties Box
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Football Kinematics Homework: Tom Throws Ball to Wes
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Three charges located on a straight line
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Frictional force for bank curves
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Light rays reflected off vertical mirror (law of reflection)
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How to Keep a Sign from Collapsing
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Calculate kinetic energy transferred
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Calculating the Angle of a Stable Ball on a Charged Plane
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Experiment to find Plank's Constant
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Equilibrium Force: Solving for Centre of Mass | Homework Statement
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What really is a Pascal and a Joule?
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Escape velocity and kinetic theory
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Coulomb's Law, Charges and Acceleration
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Converting parametric to cartesian
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Circular Motion: Find Speed at Point A
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Effective Resistance in Circuit
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Why is charge quantized and unable to exist in fractional or decimal values?
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Velocity function, unit vector notation, acceleration, speed
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How Does Friction Affect a Puck Sliding Up an Inclined Plane?
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Calculating Acceleration of a Car After Braking
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Projectile question with no time or velocity or range
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Natural Oscillation Frequencies
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Measuring Wavelength Homework: Middle of Lines or Book?
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Why Can't Conservation of Energy Be Used to Solve the Loop Problem in Physics?
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Flow Rate in Horizontal Rectangular Channel: Solve Now
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Power developed by a jumping man
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Rods with Masses orbiting Earth
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Three Point Charges, Find x-component
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What is the recoil velocity of a carbon atom in pair production?
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What is the maximum load the concrete can support?
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Calculating Total Power Output of a Speaker at a Given Distance
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How to Calculate the Force Holding Two Halves of a Charged Sphere?
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Calculating Net Gravitational Force in Equilateral Triangle Configuration
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Why must a water skier at constant velocity lean back?
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Relative position and velocity question (Two dimensions)
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Calculating pressure in high altitude?
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What is the Acceleration of a Spherical Shell Filled with Fluid on an Incline?
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Center of Mass Velocity in Elastic Collision
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How Does Rotating a Wire in a Magnetic Field Affect Force and Current?
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