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.
Max amplitude of a diving board that will not toss a pebble off?
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Question about reflectivity and maximization of energy reflected
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Finding highest order number for a diffraction grating
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How to Maximize Inductance in a Coaxial Cable?
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Perpendicular inelastic collision problem
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Motion in Cylindrical Coordinates
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Finding Time with Work and Distance
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Projectile Motion of motorcyclist
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Intensity of two sound pressure waves
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Understanding Reflectance and Transmittance Calculations
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How to determine the car's deceleration at a point along a curve?
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How can I calculate the maximum impact force on the helmet?
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Work done in elevator problem — is it positive or negative?
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Dynamics problem (force and torque analysis) of a human finger
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Schrödinger Equation (why are U and -x^2 =0?)
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Finding the voltage drop along a tapered wire
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Solving a Circular Motion Problem - Expert Tips and Techniques
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Centre of mass (composite rod) - length and densities provided
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Calculating Max Tension, Final Angle for Swinging on Rope Over Lake
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Poynting theorem and electromagnetic density
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Distribution of normal force in this problem
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Number of Waves/Crests in Tsunami Wave Train
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Finding the position vector for translated frame of reference
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Finding the Right Spring Force: A Tale of Error and Redemption
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Apparent weight problem (kinematics + conservation of Energy + Newton's laws)
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Thermal energy dissipated from the brakes in a car
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Overall Sound Pressure Level between two Frequencies
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The Diffraction Grating - Fringe Brightness and Spacing
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Alternating Series Estimation Theorem
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Hall Effect - Properties of a slab of metal
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Conceptual question involving tension and angles
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Air pressure with Bernoulli's equation
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Direction of friction for three bodies stacked one on top of the other
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What is the maximum coefficient of friction for a composite body on a slope?
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Observations versus Model-Based Statements about the Sun
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Determing the new Near Point after correcting myopia with glasses
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A radially pulsating charged sphere creates which of these effects?
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Uncertainty in the standard deviation
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The angle at which a skier will leave the sphere
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I-V graph of Diode using a C.R.O.
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Gravitational PE for a certain distance from the Sun
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Upward force of float moving in an arch under water
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Nonreflective Film: Solving the Ref. Index Problem
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Conservation of energy problem with friction included
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Car-Car System: Energy Conservation?
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What is considered the "System" here? (conservation of energy problem)
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Questioning a Physics Problem: Taking Different Reference Frames
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Density versus Pressure -- Balancing the bouyancy of a floating capsule
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How Do Relevant Equations Help Solve Problems?
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Moment of inertia of a uniform square plate
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How Do Angular and Linear Velocities Relate in Cyclist Work-Energy Problems?
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Work done on a falling elevator by a spring + gravity
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A spring, disk and pulley system
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Tension in a complex-pulley-system
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How is the slope of the shear force equal to the negative of the load?
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How Does Acceleration Affect Tension in a Cable Car System?
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Lab report (photelectric effect to determine Planck's constant)
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Is the Hertzian Contact Model Suitable for Simulating Car Braking on Wet Roads?
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Projectile Launch Angle: What Could Be Causing My Arccos Computation Problem?
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Find v_1 for projectile using start position, final position and angle
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Why Do Energy Bands Split and Merge in Semiconductors?
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What is the atomic spacing D of this crystal?
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Arch Truss Bridge, Static Determinacy
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Fluid Dynamics Question: A glass tube areas, pressure, determine height.
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How Does Efficiency Impact Velocity Ratio in a Third Class Lever?
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What is the Full-Load Voltage of a DC Generator at 800 rpm?
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Single-slit diffraction and small angle approximation
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Electrostatic equilibrium between 3 styrofoam balls
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How Does Stepping on a Hose Affect Water Flow and Speed?
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Mass-Spring-Damper time response to step input
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Finding the minimum speed for putting an object in orbit
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Kinetic Energy of a Charged Particle near a Charged Ring
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Find dissipative function for the non-linear force f=-bv^n
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Rotational Motion Problems: Tilting Pole, a Yo-Yo, and a rolling hoop
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Quarter- bridge strain gauge circuit
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Prove this equation using fields: show F=Bqv
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How Does Ampere's Law Apply to an Infinite Sheet of Current?
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A Solenoid, a Moving Magnet, and a Light Bulb -- Will the Light Bulb LIght Up?
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Wavelength of scattered photon and angle of scattering in the Compton scattering
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Derive the Venturi Meter eqn from the Bernoulli eqn
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Period of Anharmonic Oscillator
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How Do You Calculate Parameters for a Given Speed Distribution Function?
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Determining Best Value of k for Compound Pendulum
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Two infinite charged lines -- find the locations where E=0
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Resistance of a hollow aluminum cylinder
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Angle Of Minimum Deviation (Prism & Spectrometer)
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Equations of motion for a compound pendulum
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Can You Solve These Vector Questions About Wind?
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Focal length of a concave mirror
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Conceptual questions in Fluid Mechanics
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Pressure higher up in the atmosphere
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Boltzmann Distribution Relative Population of 2 atomic states
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Ray Tracing and Image Formation with a Concave Lens
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Electric field strength from a light bulb
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Find the total magnification for a system of 2 converging lenses
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Traveling proton and electric field problem
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How Do You Model a Mass-Spring-Damper System for a Rotating Body?
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Calculating Distance and Time for Traveling to a Star at 1.0x10^8 m/s
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Two Closed Thermodynamic Cycles Conceptual Question
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How Do You Calculate Vertical Acceleration in a Block and Pulley System?
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