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.
Calculating Friction Force of Train on Passenger at Curved Track
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Where Is the Resultant Force Applied on a Square Plate?
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True or False: Atom Model Statements
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What is the Magnetic Field of a Toroidal Solenoid?
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How Long Does It Take for a Mass to Oscillate Between Two Points on a Spring?
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Hydrogen Atom's Energy Levels-True/False
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What Is the Initial Velocity of the Green Car with Constant Acceleration?
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I need some explanation on this
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Voltage and parallel capacitor distance
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Why is the 10 μF capacitor causing extreme confusion?
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Work, Force, Acceleration, and speed of a box attached to a spring
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Rotating System in an Inelastic Collision
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Physics tangential speed of a ceiling fan
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Find the area enclosed by the curve (parametric equation)
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Finding the Ideal Angle for Maximum Distance with Friction
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Calculating Speed of Meterstick Swinging Vertical - Physics
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Calculating Pressure Force on a Storefront Window | Tornado Physics Problem"
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New Force After Objects Are Touched Together?
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Spring attached to a box; descending a hill problems
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Calculating Energy Released When Hydrogen & Anti-Hydrogen Collide
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How do spin measurements of particles relate to complex amplitudes?
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Rotational Motion of a wheel turning
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Work done by the torque on a pulley
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How Deep Does a Ferry Sink with Added Weight?
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Ball rolling down a hill using diameter
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What is the equation for torque in a system with two blocks and a pulley?
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Show the equipotential surface is a spherical surface
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Windmill rotates with constant ang. accel. What time does Tangetial = Centripetal
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Investigating Specific Heat Capacity with Boiling & Warm Water
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Predicate Logic Universal and Existential quantifiers
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Banked Circular Motion with Static Friction
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Why's radial acceleration zero at north pole
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Probability of finding a particle?
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(Force x Distance) Magnitude of velocity help
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Problem on distribution of charges between charged/uncharged spheres
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Final velocity of 2 spheres attracted by gravity and electrostatic charge
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Solving Frequency Problems: Motorists & Guitar Strings
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What Is Resonance in a Parallel-Series LCR Network?
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Vibration exciter input power vs output from a piezo
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Perpendicular component of vectors
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Angular Magnification and the Magnifying Glass
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Graphing Distance and Time to find Acceleration
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What is the downward acceleration of a cylinder as it unwinds from a tape?
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Q on Static Friction - (from Giancoli)
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NON-monatomic gas expansion, find internal energy change
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Relativity Simultaneity Problem
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Battery Series: More Charge or Rate Affected?
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How to Find a Vector Passing Through Two Points with Equal Magnitude?
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How Far Does the Stone Travel Horizontally to Hit the Plum?
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Buoyancy and Harmonic Oscillation
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Calculating Electric Field Strength for a Point Charge and Proton Interaction
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Coin rolling with constant deceleration, how much time to go 1.6m
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Two dimensional vectors question
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Electric Potential Inside a Metal Object
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How Fast Was the Train in Ballot's Doppler Shift Experiment?
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Angular Velocity from Potential and Mechanical Energy of rotating rod
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What Is the Speed of a Block at Different Points on a Frictionless Hill?
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How can I simplify a network of capacitors using a Y-Δ transformation?
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I0=V/RR=(xL-xc)/tan\phiPAv=1/2VI0cos\phiMax Current in RLC Circuit @ 1759 Hz
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Finding tension given densities?
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How Can You Measure the Force of a Punch?
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Two circular discs spaced apart from a parallel plate capacitor ?
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What is the main cause of the Gyroscope Torque Confusion?
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Help with resonant frequency in ACC
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Magnetic Force Exerted on Particle
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Force Needed to pull apart hemispheres of an evacuated sphere
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Circular Motion: Understanding Centripetal Force
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What Is the Natural Angular Frequency of a Cantilevered Body?
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Calculate Torque: Solve the Equation!
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Resultant Amplitude of 2 Waves
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Angular Momentum Operator Eigenfunction
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Reaction force on a semi-cubical parabola
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Not the regular old kinematic question- help
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Electric field due to a finite line of charge
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How Does Angular Velocity Change as String Length Reduces in a Rotating System?
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Distance between falling object
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Quantum Numbers for Hydrogen Atom Electron
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Please help me with..Destructive Interference
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Potential difference between two points problem
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Confused by Mark Scheme: Exam Q on Fire Engine Sound Wave
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Calculating Current in a Circuit with a 20 Ohm Resistor
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Stopping distance of 2 Vehicles
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Equilibrium and Moment of Inertia Question
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How often are mars and earth diametrically apart
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Measuring the period of a pendulum or spring with a stopwatch
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Using photogates to find acceleration
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How to Calculate the Increase in KE in a Two-Cart System with Spring Release
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Statics, moment of inertia simple square-shape (no calculus)
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Solving a Physics Work Problem: Calculating Work on a Moving Car
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Two transfersal sinusoidal wave
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Strength and direction of an electric field at a particular point problem
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Find the taylor series of ln(1+x)
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Finding normal force from kinetic and potential energies
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Solve the Mistake: Simple Harmonic Motion
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How Long to Charge a 470µF Capacitor to 330V with a 3V Battery?
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What work was done by the electric force?
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Finding Angular speed and momentum
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Pulley problem solving for mass
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Bungee Jumper - Elastic Potential Energy
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Momentum conserved on inclined ramps?
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