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.
Can someone tell me how many forces of friction are in here?
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What does divergence of electric field = 0 mean?
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Negative values of magnetic fields strength obtained?
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Using the right hand rule with symbols
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An Open Cylindrical Tank of Acid....
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What's wrong with my math?[Thermal volume expansion]
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Gravitational Energy Released from Sphere
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Calculating Object Location for Converging Lens with M=-1
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Thermal Equilibrium Temperature Question Sodium and Water
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Find the magnitude of the current density
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Angular Speed/Torque Homework: Hubble Telescope | Answers Provided
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How Does Snell's Law Affect Color Dispersion in a Window Pane?
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Equivalent resistance between a and b -- Complex circuit
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Ring launcher conceptual question
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How Do You Calculate Cosine Theta from Work, Force, and Distance?
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Centre of mass of this boomerang?
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The Magnetic Force on an Iron Ring
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Motion of a point is equal to dynamic harmonic oscilation
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Coulomb's Law and the Force Between Charged Bodies Across Vast Distances
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Vibrating Strings: Determining Wave Speed From Eq of Best Fit
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Can someone help me find the angle between two forces?
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Using right hand rule 1 to find direction of magnetic field
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Potential energy stored in a dipole
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Moment of thin Rod at pivot when acted upon by a Force
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Rotation of a block when not in equilibrium
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Effect of density on rms speed in ideal gas eqn
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Solve Sine Wave Function Homework
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How Long Will it Take to Heat Water Using a Solar Heater?
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Rayleigh criterion (two wavelengths) + diffraction grating
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Two blocks on a frictionless surface; find the force
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Radius and period of charge in B field
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Finding Jupiters Mass with one of its Moons
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New capacitance when dielectric material covers bottom half
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Describe absorption experiment to distinguish 3 radiations
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Why do bicycles require more pedaling force at higher speeds?
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Rotational work done by static friction?
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Time for capacitor charging in RLC circuit.
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Basic 1-d dynamics with a bit of calculus.
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Analyzing a Compressed Spring System
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Initial energy stored in springy steel before oscillating
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Net acceleration, free body diagrams, velocity, force normal
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Justifying Ampere's Law and Faradays Law with an experiment
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Thermodynamics problem: Gas-filled cylinder & piston SHM oscillator
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Max Mass Dresser Liftable w/ 150N Force - 46kg
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Electric field lines from a metal shell and sphere
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Identical bulbs, order them brightest to dimmest
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Challenging question on impulse (or momentum)
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What are the roles of friction and footwear in bob-sledding?
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Short circuit current and Open circuit voltage -- Illumination
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Torque on barbell when angular momentum is not constant
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Solve Bernoulli Problem: Velocity of Water Outlet
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Question about changing resistance and power
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Calorimetry Problem: Finding Final Temperature and Phase Change
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More Magnetic Fields -- 2 fields through a loop decreasing with time....
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Is the Magnetic Field Strength Increasing or Decreasing?
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In expressing Internal Energy, how do I get to the next step
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What Are the Spring and Friction Constants for a Small Truck's Shock Absorbers?
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Peskin shroeder quantum field 7.31 pag 221
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Grounded circuit, 2 batteries and 2 resistors
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Short Webpage Title: Ball Toss Free Fall Equations
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Impulse or Momentum Challenging Question
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Rotating bar hanging on a spring (oscillation)
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Calculate the EMF induced in the square?
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Line charge creating induced emf and displacement current
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Investigating Net Force in Two Dimensions
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Massive particles are relativistic particles if their speed....
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How do I use the tip-to-tail method to add vectors and calculate net force?
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Is Flow Rate in Open Channels Affected by Backpressure?
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A really confusing question on potential energy,
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Work done using time, velocity and mass?
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Constant force but angle is increased, what happens to work
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Calculating Net Force Using Vector Addition
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How do I calculate distance using Newton's Second Law for a puck on a stick?
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How to Combine Gradient Uncertainty with other Uncertainty?
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Terminal Velocity of magnet down a copper tube
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Applying Newton's Universal Law of Gravitation
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Resistors (lightbulbs) Power & Brightness
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Rotational Motion of a bowling ball
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Coupled spring pendulum (harmonic oscillation)
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What is the expression for pressure distribution in a rotating tornado?
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Mechanics, Distance and speed question
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Motion Problem Homework: Calculate Distance, Displacement, Speed, & Velocity
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Difference in Brightness between Two Bulbs
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How Do You Calculate Tension in a Rope Pulling a Box with Friction and an Angle?
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Optimal Width of a rotating wheel
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Path of a Particle: Find & Solve Questions
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Force on a charge due to charged sheet
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Time period in harmonic oscillation.
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Angular Momentum of the particle.
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Kinematics involving two objects
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How Fast Was the Second Stone Thrown to Match the First at the Cliff Base?
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Force and Energy of a block on a spring as it compresses.
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LC Circuit Problem Homework: Calculate Values of L & R
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Doppler effect and signs of the equation
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Falling rotating sphere and displacements
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How to Determine the Velocity of Block A with Pulley Masses Included?
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Stopping Distance affected by Mass of Cart on Inclined Plane
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What Determines the Meeting Point of Two Falling Stones?
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How Should Uncertainty Be Handled When Averaging Measurements?
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Height of tower given objects dropped from top at same time?
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