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.
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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Half wave rectifier Ripple Voltage
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Derive Wheatstone Bridge's equation
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Understanding Law of Poles (Electric)
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Effective Spring Constant for Three Masses and Four Springs
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Torque, Equilibrium, and Center of Mass
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Magnetic Interactions in a Wire-Magnet System
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General calculation of the oscillation freq of a hydrogen molecule
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Calculating Enthalpy and Internal Energy of Melting Ice
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Maximum transverse velocity of a wave along a string
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Bifilar pendulum questions for my lab
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Rate of reaction, rate constants, and Arrhenius' Equation
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Force on a Current Carrying Conductor
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Thermal Expansion for an Ideal Gas
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Help Understanding Vectors, Equilibrants, and Force Tables
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What are some tips for improving a friction experiment?
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Moment of Inertia of a Triangular Prism
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Calculating Rotational Inertia of a Rectangular Prism
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Special relativity - two flashes at different places
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Current density, drift velocity and electric field
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Pulse vs Continuous transducers (Ultrasound)
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Calculating Force in System S' Using Lorentz Transformation
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Intensity of Electromagnetic Waves
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Particle sliding down a frictionless sphere
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How would you develop a force scale for measuring weight using springs?
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Projectile motion on an inclined plane
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Moment of Inertia of a turntable
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