Introductory Physics Homework Help Forum

Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.

Threads

Initial conditions for normal modes of gas in a tube

  • Sol_Solved
  • · Replies 2 ·
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2

Completing the square with a coefficient on x²

  • Math Is Hard
  • · Replies 2 ·
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2

Calculating Resistance of Aluminum Cylinder

  • Roary
  • · Replies 2 ·
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2

Work done by a rope pulling a cart at 28.5°

  • bossalinie786
  • · Replies 3 ·
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3

Is the force field central for a spiral orbit r = aθ³?

  • mark9696
  • · Replies 11 ·
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11

Graphing the derivative of a function with a cusp

  • ACLerok
  • · Replies 3 ·
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3

Finding the integrating factor for (1-xy)y' + y² + 3xy³

  • discoverer02
  • · Replies 2 ·
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2

Rearranging a differential equation solution from implicit to explicit form

  • discoverer02
  • · Replies 3 ·
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3

Find the solid angle subtended at the orgin

  • jlmac2001
  • · Replies 2 ·
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2

Is the Triangular Lamina Stable When Suspended from Point C?

  • BLUE_CHIP
  • · Replies 2 ·
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2

How Far Does a Bus Travel After Accelerating and Decelerating?

  • exemplarysam
  • · Replies 2 ·
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2

What is the angle of the electric field near a charged rod and two balloons?

  • SparkimusPrime
  • · Replies 8 ·
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8

Is the Orbital Energy of a Comet Elliptic, Parabolic, or Hyperbolic?

  • student1938
  • · Replies 12 ·
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12

Calculating induced emf and transformer turns ratios

  • mustang
  • · Replies 2 ·
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2

Calculating Forces on Boy Sledging Down Slope

  • raging_hippo
  • · Replies 2 ·
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2

Finding the Polar Equation of a Circular Orbit in a Central Force Field

  • mark9696
  • · Replies 7 ·
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7

Air Resistance: Solve Your Questions Here

  • SsUeSbIaEs
  • · Replies 2 ·
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2

Tension Pull problem w/friction

  • cocomoj
  • · Replies 6 ·
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6

How far does a projectile travel in a given time?

  • holly
  • · Replies 6 ·
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6

Solve a Simple Kinematic Question: Space Shuttle Landing Acceleration

  • b_rudi
  • · Replies 2 ·
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2

Finding the Speed of a Point on a Rotating Grinding Wheel

  • SsUeSbIaEs
  • · Replies 5 ·
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5

How do I integrate arcsin x by parts?

  • agro
  • · Replies 4 ·
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4

Calculating Cutoff Frequency with Oscilloscope and Coaxial Cable

  • Reason
  • · Replies 4 ·
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4

Solving Standing Waves/Nodes: 230 Hz, Harmonic Order, Fundamental Freq

  • tandoorichicken
  • · Replies 2 ·
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2

Electric Field w/ Continuous Charge Dist.

  • oooride
  • · Replies 8 ·
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8

Constant acceleration with initial and final position and velocity

  • Beretta
  • · Replies 2 ·
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2

How can I solve equations without graphing?

  • repugno
  • · Replies 5 ·
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5

Finite Rotations: Prove D^(1/2)[R]

  • Norman
  • · Replies 2 ·
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2

Why Is It Hard to Find Images of Mobius Syndrome Online?

  • Dagenais
  • · Replies 3 ·
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3

Finding charge Q2 when electric field is zero at point P

  • Zeus
  • · Replies 13 ·
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13

Calculating Work Done by a Spring with Initial Compression

  • AngelofMusic
  • · Replies 3 ·
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3

Moment of inertia of a rectangle and disk

  • jlmac2001
  • · Replies 3 ·
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3

Magnitude of acceleration of electron in electric field

  • Spectre32
  • · Replies 3 ·
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3

What Distinguishes Internal Forces from External Forces?

  • Canuck156
  • · Replies 2 ·
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2

Finding Values for Theta in Vertical Plane Rotation Problem

  • AngelofMusic
  • · Replies 3 ·
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3

Electricity, Conducting Plates and Magnetic Fields

  • Zeus
  • · Replies 3 ·
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3

Air kinetic energy and Vrms of N2 and O2 at 293K

  • cowgiljl
  • · Replies 2 ·
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2

Inductors i think it'll make an harmonic type of move

  • ismael18
  • · Replies 2 ·
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2
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2

How to Find Vector Magnetic Potential A from Magnetic Flux Density B?

  • jezse
  • · Replies 2 ·
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2

Ice thickness in a pond with temperature gradient

  • Rockdog
  • · Replies 2 ·
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2
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2

Diagram & Calculations for Pulley System with Masses 8kg, 2kg, and 4kg

  • mcintyre_ie
  • · Replies 2 ·
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2

Are My Physics Problem Answers Correct?

  • cowgiljl
  • · Replies 2 ·
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2

Can't solve any kinematics or forces problems on my own?

  • Maxwell
  • · Replies 6 ·
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6

How Is Magnetic Field Generated by a Stream of Protons?

  • PhysicsChick
  • · Replies 2 ·
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2

Can I show my solution? Linear Algebra

  • franz32
  • · Replies 4 ·
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4

Solving the Group O(n) Generator Problem

  • Norman
  • · Replies 9 ·
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9

Checking 7 rotational motion homework answers

  • pedestrian
  • · Replies 2 ·
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2

Different colored light on solar panels?

  • algilaera
  • · Replies 5 ·
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5

Acceleration Questions: Answers to Solve Equations

  • xyxaprilxyx
  • · Replies 2 ·
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2

How Do Sound Waves Measure Water Depth in Physics Coursework?

  • Jay_102
  • · Replies 4 ·
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4

First-year physics formulas and when to use them

  • holly
  • · Replies 41 ·
2
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41

Ferry Velocity and Passenger Motion: Solving for Direction and Magnitude

  • tgoot84
  • · Replies 3 ·
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3

Calculate the magnitude of the tension force in the rope

  • psruler
  • · Replies 5 ·
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5

Finding the Angle of Release for a Pellet on Top of a Cylinder

  • Bling
  • · Replies 4 ·
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4

What is the equivalent resistance when diagonal resistors are present?

  • Roary
  • · Replies 8 ·
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8

Find the vertical component and friction

  • DaveSauce
  • · Replies 2 ·
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2

Calculating Minimum Speed for a Bicycle Jump Across a Creek

  • Beretta
  • · Replies 2 ·
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2

Kinetic Energy and Work and Power

  • nemzy
  • · Replies 6 ·
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6

Work done by stretched hose on balloon when released

  • nemzy
  • · Replies 7 ·
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7

High Voltage line with a resistance problem

  • Spectre32
  • · Replies 2 ·
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2

What is the magnetic field produced 2.0 m from a stream of 10 E9 protons/second?

  • PhysicsChick
  • · Replies 2 ·
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2

Acceleration, speed, distance problem

  • Raffi
  • · Replies 6 ·
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6

How Do You Calculate Time and Speed in These Physics Problems?

  • hyen84
  • · Replies 2 ·
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2

Truck collision with spring bumpers: momentum and energy

  • Arfrce8729
  • · Replies 2 ·
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2

Triple integral of div F over a sphere: volume or surface integral?

  • jlmac2001
  • · Replies 2 ·
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2

How Do Oceans Function as Buffers?

  • Astrophysics
  • · Replies 2 ·
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2

How Do You Apply the kT>>hw Approximation in Van der Waals Interactions?

  • demonslayer79
  • · Replies 2 ·
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2

Proving Transitivity of Sets with No Foundation

  • yxgao
  • · Replies 2 ·
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2

Forces, Torques, and Acceleration

  • Arfrce8729
  • · Replies 3 ·
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3

My Physics Teacher didn't tell me how to do this

  • Earth_kissed
  • · Replies 7 ·
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7

UBC Physics Olympics: The Descrambler Event

  • guerrilla7
  • · Replies 1 ·
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1

Total charge and max current for a 250Ah car battery

  • Magna1
  • · Replies 7 ·
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7

Calculating the Threshold Mass for Static Friction in a String System

  • London Kngiths
  • · Replies 3 ·
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3

Circuit with a capacitor problem

  • broegger
  • · Replies 3 ·
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3

How do I solve for coefficient of friction?

  • Sarbear777
  • · Replies 2 ·
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2

Lorentz force and magnetic force on current-carrying wire

  • mustang
  • · Replies 2 ·
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2

Solving Kinetic Friction: Min Force Needed to Prevent Sliding

  • devnull
  • · Replies 2 ·
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2
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8

How do I find electric force on a charge without its coordinates?

  • NINHARDCOREFAN
  • · Replies 2 ·
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2

Can I Calculate the Momentum of Two Colliding Cars?

  • Addison
  • · Replies 2 ·
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2

Difference between mass, force, newtons, slugs and gravity in pounds and kilograms

  • Hollywood Dave
  • · Replies 2 ·
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2

Fundamental Wavelength of Vibration of Steel Wire 1m Apart

  • tandoorichicken
  • · Replies 4 ·
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4

How Does Changing a Gaussian Surface's Shape Affect Net Flux?

  • pringless
  • · Replies 2 ·
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2

Surface charge density of spherical conductor with given potential

  • NINHARDCOREFAN
  • · Replies 14 ·
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14

Football Punter's Force: 0.55kg at 8m/s in .25s

  • DeBbIeFrIcKeNrAy
  • · Replies 2 ·
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2

Possible arrangements for a deck of 52 playing cards?

  • jlmac2001
  • · Replies 2 ·
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2

Initial Speed of Bullet: 5.5kg & 22.6g Collision

  • taralplp
  • · Replies 2 ·
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2

What is the speed of the box at the lower level

  • daisy_polly
  • · Replies 5 ·
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5

Determine the point at which the electric field is zero

  • oooride
  • · Replies 6 ·
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6

Where does momentum go when friction slows an object to a stop?

  • adamg
  • · Replies 4 ·
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4

Calculus Problem (involving tangent line)

  • Cod
  • · Replies 3 ·
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3

Is the Force Acting on this Rocket Balanced or Unbalanced?

  • adamg
  • · Replies 13 ·
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13

Solving Newtonian Mechanics: Find Expression for Speed v(t)

  • mindcircus
  • · Replies 4 ·
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4

Very simple but I don't understand how

  • maphanya16
  • · Replies 3 ·
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3

Solving Circuits with the Nodal Method: Finding Va

  • formulajoe
  • · Replies 2 ·
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2

Finding a parametric equation for y = f(x)

  • AngelofMusic
  • · Replies 5 ·
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5

Angular momentum and conservation of momentum problems

  • lucianb
  • · Replies 2 ·
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2

What are possible subtopics for a physics extended essay on firearms?

  • Vodka
  • · Replies 3 ·
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3