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.
Checking My Understanding of a Magnetic Circuit: Help Appreciated!
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Why is my answer for the rotating wedge problem not matching?
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Calculating Centripetal Acceleration of a Locomotive's Crank Pin
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Laws of motion and a projectile thrown from an accelerating elevator car
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Would a longer lever require less force to hand pump water? (PHOTO)
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Gravity due a hemispherical planet
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Direction of a rope with a ball inside an accelerating box
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How Does Expansion Affect Internal Energy in a Monatomic Ideal Gas?
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Calculate the acceleration as the tractor slows down
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Can energy be negative or can just a change in energy be negative?
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Find v(x) of a mass suspended from a spring
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The Mystery of Pulleys: Answers to Your Burning Questions
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How to solve this sound problem (minimum sampling rate required)
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Simple Finite Square Well Problem help *Ignore, made stupid mistake*
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Help please (concerning eigenfunctions and the Schrödinger equation)
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A small mass on a wedge having a stationary circular track
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Electron helix in a magnetic field
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Inelastic collision problem: Bullet striking a wood block
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Pressure and Volume of a Neutral Hydrogen Cloud
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Fourier transformation of the Wavefunction in QM
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Dynamics: A wedge, a mass, and two pulleys
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Net gravitational force on an object
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Electric field due to two positive charges
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By using Gauss' law, can the electric field be p/(pi*ε*r^2)
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Confusion regarding Quantum numbers
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Direction of the net force acting on a pendulum
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Friction of Water Pumped Into 6in Tube from Chamber
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Elastic potential energy and natural length of a spring- relation?
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Question about friction in a problem with a stick and cylinder
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Master and Slave Cylinder at different heights
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How to find the number of oscillations a block goes through
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Calculating Uncertainty: Where Am I Going Wrong?
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Electrons moving in an electric field
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Newton's Laws — Pushing a box horizontally on a surface
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Balancing forces on charged balls hanging on strings
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How do I calculate the fluence of a Gaussian Laser Beam?
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Sum of torques, equilibrium problem
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Newton’s Second Law applied: F=ma
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Determination of the velocity of a particle in a hollow cone
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Equation of motion of a mass on a 2d curve
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Normal reactions at the bases of two light supports
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A question of kinematics involving a changing velocity vector
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Expanding a function for large E using the Taylor Expansion technique
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Linear Equations: Solving for 3 unknowns given 3 equations
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Finding the coefficient of kinetic friction - problem with a mass on a plane
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Separation of variables: Context of decelerating charged particle
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Dimensional analysis (Speed of sound)
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Question about the derivation of linear magnification
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Does the block move along the pink dotted lines
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Universal Gravitation - calculating orbital period of satellite
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Where Is the Center of Mass of a Leg?
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Free fall time in an accelerating frame of reference
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Electric field on a ring's axis
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Very simple vector question (solid state)
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Velocity Question for a Car Accelerating Down a Road
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Seemingly simple Physics 2 wave question (third harmonic frequency)
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The Density of a Nucleus: A Question About Steps in Calculating Nuclear Density
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Understanding EM Wave Reflection: Wavelength Changes Explained
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Ratio of total refelected intensity compared to incident intensity
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Finding Vector C: Magnitude and Angle Calculation
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De Broglie wavelength in terms of accelerated potential difference
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Calculation of minimum angular velocity of a mass on a spinning plate
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Motion under Gravity: Displacement of 273.6m in 5sec
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Relativistic charged particle in a constant, uniform EM field
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Help Verifying Schrodinger's equation in different potentials
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Assistance: Large uncertainties making it difficult to plot slopes
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Deriving Lorentz Transformations for Moving Reference Frames
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Airtime for halfpipe skateboarder
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What does "Fully Charged Capacitor" mean?
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The ratio of compression of springs from three different setups
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Can a 10N Force Overcome Friction to Move a 10kg Block?
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Impossible Relative Velocity Values
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What is the final angular velocity of each cylinder
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Determine the capacitor value so that this circuit is in resonance
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Determine the acceleration of block m1 in this wedge-pulley system
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Spring is stretched, then attached to a mass, what is its speed at x?
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Solve Mechanics Problems: Find Time & Displacement Relation
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Understanding the Impact of Convex Lens Focal Length on Water Temperature
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Terminal Speed of Vessel in Vacuum and Weightlessness
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Force on a copper loop entering into a magnetic Field B with speed v
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Please explain this doubt about a block sliding question
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Torque: find the force necessary for a body to be in equilibrium
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Particle in a magnetic field -- question
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How to show the root mean square deviation
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Eletromagnetism: Copper Plate on a Spring Oscillating in a Magnetic Field
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What is the kinetic energy of the block when it is moved 2cm.
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Is my formulae correct for time of flight in this projectile problem?
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Why is My Relativity Light Clock Calculation Incorrect?
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Conservation of Momentum Question Involving Two-Dimensions
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What is the proper formula for ##Y_{max}## for this trajectory?
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Solution to Random Walk Problem | n_i
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Vertical circular motion with accelerating centre
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Please teach me how to prove this random walk problem....
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Stationary Point - Possible Values
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How is the magnitude of L calculated here?
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How to Solve a Doppler Effect Problem with a Moving Vehicle and Siren at Rest
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What is the period of this binary orbit?
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Would electric field exist if there were only one type of charge?
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Center of gravity and over-hanging blocks
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How Does Earth Maintain Its Angular Momentum After the Sun Disappears?
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