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.
Sound waves in carbon dioxide -- I think book answer is *wrong*
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Rolling Bottle: Calculating Acceleration of Center of Mass
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What Are the Optimal Launch Angles for a Projectile to Pass Through an Opening?
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Torque & Tension: Find FT1, FT2 & θ for 120-N Board
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Solving Electric Field with 3 Point Charges: Find q1 & q2
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Phasor algebra in AC circuit analysis
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Topic for physicasor mathematical project
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Relativistic Centre of Momentum Frame
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How Does Pulling the String Affect the Speed of a Ball in Circular Motion?
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Finding the overall uncertainty
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Calculate Drag Force & Power for Long Cylindrical Antenna
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Upthrust/ how does the weight of a sphere change in water?
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How to determine a value of force for equilibrium
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How Does Bullet Velocity Change After Passing Through Different Block Widths?
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A wood block is launched up a ramp
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How much energy is lost due to friction?
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A problem regarding gravity
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Kleppner Power and Kinetic Energy Conceptual Questions
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Calculate the muzzle velocity and the time required between lanuches
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Special Relativity: Time dilation
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Electrostatics -- the case of a charged cylinder
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Acceleration of wedge due to normal force exerted by block?
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Change of energy loss in driven oscillations
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Understanding Power in Parallel Circuits: V^2/R vs. i^2R
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How does momentum conservation apply to a system with two interacting objects?
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How to calculate the equivalent resistance using wye delta ?
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Find wavelength, frequency and speed of a wave,
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How Do You Solve a Double Atwood's Machine Problem?
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How to find the Eg of an object thrown at an angle?
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Variable angular acceleration and velocity
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Calculating Photon Frequency From Relativistic Decay: Homework Solution
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Location of Mass in an Oscillator with Time-Varying Force and T->0
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Potential in case of concentric shells
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Equilibrium Tension Along a Curved String
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Calculating Pump Power for Steady Water Flow: Work-Energy Theorem Approach
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Rolling without slipping magnitude
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Shannon entropy of logic gate output.
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Magnetic field outside the solenoid
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Roller Coaster Physics: How to Calculate Maximum Velocity on a Horizontal Plane
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Interference from reflection off water across a lake
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Doppler effect for accelerated source
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Why Is Calculating Rope Tension with Angles Confusing?
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Conceptual question, fluid pressure in a barometer
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Pendulum with a spring attached
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Work done by gravity on fluid in u-tube.
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Max Displacement of 6.0 kg Object: 0.27 m?
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Can you help with operational amplifier homework?
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Induced Charges on Uncharged Conductors
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Given two waves, find phase angle
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Conservation of Momentum Problems: Find Final Velocity | Part A, B, C
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What is the new temperature of the system?
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Problem regarding projectile motion on a inclined plane
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Using series in a 2D kinematics problem
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How Do You Calculate Minimum and Maximum Velocities in Projectile Motion?
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Discrepancy with Toricellis equation in a 2D kinematics prob
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Gravitational potential energy of a cylinder to a particle
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Maximum Positive Coordinate Reached by a Particle
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Projectile Motion Practice Problems | Calculate Distance and Maximum Height
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James Jumps: Calculating the Fall in Seconds & Meters
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Hydrostatic forces on a submerged curved surface question
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Change in frequency with a small change in tension (guitar string)
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Speeds regarding 2D inelastic collision
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What Angle Should the Goose Fly to Head Directly Southward?
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Density of a liquid above a column of water
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Capacity with 2 R in RC circuit
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Calculating the Cross Section for Rutherford Scattering
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Question about net force and acceleration
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Balancing magnetic forces on rods
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Solving for time given a messy displacement equation
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How Does a Skydiver's Velocity Change with Distance After Parachute Deployment?
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Volume Charge Density of Proton Beam
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Pressure inside a soap bubble just under surface
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Angle of Refraction through a Prism
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Rectilinear motion of two attracting masses
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Confusion about how to identify lever arm
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Rotational Motion Homework: K1+U1=K2+U2
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Calculating Revolutions for a Spinning Wheel | Circular Motion Problem
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Inverted or inversed. Grammar help
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What is the torque needed to lift a weight with a lever?
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Is it possible to decompose a vector into non-perpendicular components?
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Static Friction of a Car's Tyre
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Confusion about type and quantity of force being exerted
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Energy and momentum conservation
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Justification for spring in series/parallel
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How does graded-index material reduce pulse spreading in optical fibres?
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Understanding Pressure in a Bottle: The Science Behind Maria's Crumpled Bottle
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Is it more energy efficient to evaporate water or boil it?
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Ionisation energies of paired vs unpaired electrons.
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Archimedes principle boat displacement
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A particle on the edge of an inclined spinning disc
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Min. and max. mass to keep pulley system stationary
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Pendulum Question Homework: Resolving Tension Components
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Correct use of words to describe a polarized lens. Grammar
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Simple Harmonic Motion Average Velocity
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Determine the velocity after collision
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Gravity, acceleration and velocity question
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Frequency of a bead on a parabolic wire
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Work done negative and positive
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Why can’t transverse waves travel through a gas or liquid?
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Energy loss when boiling in an water experiment -- help please
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