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.
Pressure at bottom of three differently shaped cylinders
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Can I find a general solution to this circuit?
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Comparing two dams (fluid mechanics question)
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Find the coordinates of a point in 3-space
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Angular Velocity of a Large Pendulum on Earth as seen from the stars
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My Solution Attempt: Visualized
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Find tension in ropes connecting 3 masses being pulled on a surface
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Torque about an accelerating point
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Discharging a capacitor -- Calculate the current as a function of time
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Multi-part question involving a vector field
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Kinetic Energy of a Cylinder Rolling Without Slipping
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D'Alembert's principle on inclined plane problem
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Tension in a Massive Rotating Rope with an Object
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Work done by a force down a ramp
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Solving a Problem: What Went Wrong & Velocity for Both Masses
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Buckets on a pulley - Dynamics Problem
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Heat added to system increases mass
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Bernoulli equation for calculation of water flow
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Electric field amplitude question regarding intensity calculations
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Polarities of capacitor plates in a complex circuit
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14
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The advisory speed for a car on a sloped bend
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11
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A diamagnetic sphere in a uniform magnetic field
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Uncertainty: Systematic & Random
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Conservation of Energy when lifting a box up off the floor
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Does Depth Affect Buoyancy Force on a Spherical Object?
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Non-linear isotropic dielectric capacitor
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Work done by gravity and the minus sign
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Electron in a time variable magnetic field
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How does the calculation of work change for a rotating or non-rigid object?
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Does the book have an error in the addition of these two vectors?
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Definition of a non-polar molecule
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Density of a sphere that has a cavity
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AP Physics C Mechanics: Linear Momentum for Colliding Billiard Balls
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Direction of movement and sign of the charged particle
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Solving Heat Transfer of Ice Homework: Initial Copper Temp
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Calculating distance of Mars from the Sun based on two elongations
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Assumptions for string vibrator system
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Is There a Solution to My Pressure Cooker Problem?
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Battery alone deflects compass needle?
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Power dissipated in this circuit with 2 batteries and 3 resistors
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What are the x- and y-components of the velocity vector?
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How Many Bright Spots Are Visible When Laser Shines Through Slits?
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Do different length ramps violate conservation of energy?
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Minimum stopping distance so a box on a truck doesn't slip (friction)
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Agree or Disagree? Analyzing Wave Amplitudes
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How to calculate Apparent Weight of a passenger in a car going over a bump?
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Why Did I Get a Different Average Velocity Calculation for the Particle?
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Equipotential surface (test questions)
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Mixing two ideal gases with different V, T at constant pressure
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Normal modes of four coupled oscillating masses (Kleppner and Kolenkow)
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Experiment about diode related to temperature and potential difference
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Shouldn't this be kinetic friction instead of static friction!?
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Combination of 2 formulas for a graph
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Gravitational equipotential multiple choice problem
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Two masses, two pulleys and an inclined plane
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Basic Stress and Strain question -- Rock on top of a vertical column
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Horizontal force on a horizontal bar
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Maximizing Range/Time in Air of an Airplane: Solving with Calculus
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How Does Mass Cancellation Affect Acceleration on an Inclined Plane?
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Why is the Highlighted Statement True?
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Using first principles, how to get the equation of motion?
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Velocity of efflux out of a water tank
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Final Angular Momentum of a Space Station
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Finding Current in Resistors & Charge of Capacitor
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Rearranging formula using logarithms
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Work-Energy Theorem and Friction
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Calculating flow rate when emptying liquid from a closed-top tank
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Faraday's law and Magnetic Fields
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Circular Motion: A coin on a rotating disk
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Applications of gyroscope in daily life
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Equipotential surfaces for an electric dipole
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Finding Absolute Uncertainty in Data
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Finding efficiency of an engine (with attempt)
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Series-Parallel Circuits (R/2R Ladder Networks)
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Help with derivation of Malus' Law
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Question about the 2nd law of thermodynamics (heat loss)
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Circular Motion - Newton's Second Law: Bead on a Rotating Hoop
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External forces required to move an electric dipole quasi-statically
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Calculating Train Deceleration: Kid's Free Fall Time
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Einstein relativity between 2 coordinates systems
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Calculating electric charge from graph (capacitor)
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Tipping Point of Stationary Barbell
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Calculating Change in Energy: A Graph Analysis
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Determine the moment of the force about point O
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Understanding Voltage Drop in a Circuit
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My Mistake? Understanding Friction Force & Work Done on Snowy & Icy Surfaces
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Finding max velocity for a kart on a circular, banked track
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What is the pressure difference?
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Current in a circuit without external resistance
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Experimentally calculating the acceleration due to gravity
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Electromagnetism: Moving conductor and EMF
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Determine the signs of ∆H, ∆G, ∆S for the reaction: N2(g) → 2N(g)
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Solving for Speed & Revolution: F * delta t = p
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Voltage Variation w/ Variable Resistor: Correct?
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Newton’s laws of motion -- Does the 1st Law presuppose the 2nd Law?
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How to find coefficient of friction of a body sliding down the slope?
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Deriving general specific heat capacity formula
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Closed path term in Thermodynamics
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A planet of mass M and an object of mass m
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Pulling a yoyo over a surface with tension
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