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

Lightly Damped Harmonic Oscillator

  • e(ho0n3
  • · Replies 2 ·
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2

How Does Mass Affect Angular Velocity in Rotational Systems?

  • melissa_y
  • · Replies 1 ·
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1

Solving Mixing Problem with DE: Initial Values & Flow Rates

  • EvLer
  • · Replies 9 ·
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9

Solving Real Vector Space R>3 Bases Problems

  • blanik
  • · Replies 4 ·
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4

Max Distance Mass M Can Be Placed Before Wire Breaks

  • melissa_y
  • · Replies 2 ·
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2

Angular Velocity: Calculate New Speed After 4 People Step On

  • melissa_y
  • · Replies 2 ·
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2

Angular Acceleration Problem/ Solid Cylinder

  • melissa_y
  • · Replies 2 ·
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2

Angular Speed of Rolling Sphere: 32o Roof, L = 7.0 m, 12 kg, 13 cm

  • melissa_y
  • · Replies 2 ·
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2

Max Charge Capacity on a Spherical Body: Calculating the Limit

  • El Hombre Invisible
  • · Replies 2 ·
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2
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2

How Many Unique Pizza Combinations Can You Order With Given Options?

  • himurakenshin
  • · Replies 8 ·
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8

Fatal Risk: Standing on Insulator & Touching 2MV Iron Wire

  • primarygun
  • · Replies 4 ·
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4

Varying the concentrations of half-cells

  • ~angel~
  • · Replies 2 ·
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2

Plotting output response of system ot the input stimulus given

  • Brian Moughtin
  • · Replies 6 ·
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6

Simplifying Square Root Equations

  • frozen7
  • · Replies 8 ·
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8

Why is the distance always greater than or equal to the displacement?

  • jacyh
  • · Replies 6 ·
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6

Calculating Angular Speed: 70 N-m Torque on a 160kg*m^2 Disk for 10s

  • Gulheider
  • · Replies 2 ·
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2

Speed and its centripetal force of circling object

  • bigman8424
  • · Replies 2 ·
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2

Physics Help sound level intensity

  • smith22
  • · Replies 2 ·
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2

Collinear Vector Help: Finding the Value of p for Collinearity | Origin O

  • omicron
  • · Replies 10 ·
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10

Converting Problems: Get Help with Formula Steps

  • nutsy76
  • · Replies 2 ·
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2

Two spaceships are orbiting a massive body

  • CarlB
  • · Replies 1 ·
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1

Why Does Destructive Interference Occur at Different Frequencies?

  • vroman
  • · Replies 2 ·
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2

If there is enough charge getting moved by a magnetic field

  • michaelw
  • · Replies 2 ·
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2

One-Dimensional Kinematics problem

  • tchronos
  • · Replies 4 ·
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4

Momentum head on collision problem

  • recon
  • · Replies 12 ·
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12

What is the acceleration when the cord has been stretched?

  • mahtab_lovelygirl
  • · Replies 2 ·
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2

Solving the Skier's Problem: Finding the Tangential Angle

  • Swatch
  • · Replies 8 ·
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8

Forced Vibration Questions: Solve Equations for Answers

  • e(ho0n3
  • · Replies 2 ·
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2

Understanding the Identities Theorem: Can You Solve this Problem?

  • sitedesigner
  • · Replies 14 ·
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14

Nail Design: Pointed End, Cap & Stress Types

  • ermines
  • · Replies 2 ·
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2

Calculating Excavated Tar Sands in One Hour: Math Exam Review Question

  • Mozart
  • · Replies 16 ·
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16

Identifying Coordination Compounds: [CU(CN)3]2- and [Ni(H2O)6]2+

  • joejo
  • · Replies 2 ·
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2

How Does Gravity Affect the Acceleration Between Two People?

  • bigman8424
  • · Replies 2 ·
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2

How to Calculate Volume Flow Rate Using a Venturi Meter

  • sinedine
  • · Replies 5 ·
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5

Cyclic Group Problem: Showing X Forms a Group

  • AKG
  • · Replies 12 ·
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12

Cherenkov-effect + other EM relativity derivations: sources pls?

  • Tsunami
  • · Replies 2 ·
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2

Angular frequency of oscillation

  • jdstokes
  • · Replies 4 ·
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4

Van de Graaff generator energy question

  • Aprilshowers
  • · Replies 3 ·
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3

Diff. EQ. system I.V.P. with complex cunjugates (Please check)

  • VinnyCee
  • · Replies 16 ·
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16

Diff. EQ. Inhomogeneous Linear System (Double check please)

  • VinnyCee
  • · Replies 4 ·
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4

What Is the Internal Resistance of the Used Battery in This Circuit Problem?

  • liajohnson
  • · Replies 2 ·
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2

Solving Infinite Series: a_n = \frac{2n}{3n+1}

  • ziddy83
  • · Replies 3 ·
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3

Help me find angular velocity and change in Kinetic Energy

  • samemikejones
  • · Replies 2 ·
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2

Differential Equations Systems problem (3X3 matrix) Please help

  • VinnyCee
  • · Replies 4 ·
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4

How Many Balloons Can .1m^3 He @ 150atm Blow Up?

  • Erik Horwath
  • · Replies 3 ·
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3

Thermal Physics > Air and Internal Energy

  • Ivegottheskill
  • · Replies 3 ·
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3
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4

Electric Potential and Electric Field Strength

  • ylem
  • · Replies 7 ·
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7

Solving tan^2 x + 6tanx - 7 Algebraically over 0 and 2π

  • seiferseph
  • · Replies 7 ·
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7

Rigid Bodies and rotatational motion

  • in10sivkid
  • · Replies 4 ·
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4

Understanding Initial Conditions for Solving Pendulum Motion

  • EvLer
  • · Replies 3 ·
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3

Impulse from croquet mallete problem

  • in10sivkid
  • · Replies 5 ·
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5

Circular motion of a tether ball

  • in10sivkid
  • · Replies 16 ·
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16

What is the derivative for arctan(2/x)?

  • EvLer
  • · Replies 2 ·
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2

Help on Linear Algebra Assignment Due Next Week

  • James Cutler
  • · Replies 2 ·
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2
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2
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2

Find Constant Force F Vector Form: 34Nm Work Done A to B

  • devious_
  • · Replies 4 ·
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4

Polar Coordinates: Show Acceleration Angle of 30°

  • devious_
  • · Replies 7 ·
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7

Is this right? chem heat of combustion

  • joejo
  • · Replies 24 ·
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24

How Many Balloons Can a Helium Tank Fill?

  • Erik Horwath
  • · Replies 2 ·
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2

Volume Question with cirular base and square top

  • ktpr2
  • · Replies 8 ·
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8

Understanding Coulomb's Law: Calculating Force on a Line of Charges

  • mr_coffee
  • · Replies 3 ·
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3

Basic Calculus Help: Solving a Limit Problem with Algebra

  • naicidrac
  • · Replies 12 ·
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12

Finding Solutions for Simultaneous Equations with Transcendental Functions

  • ssj5harsh
  • · Replies 7 ·
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7

Sin+cos solution undetermined coeff. de

  • EvLer
  • · Replies 2 ·
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2

How Do You Solve Complex Wave and Optics Problems?

  • GingerFish
  • · Replies 2 ·
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2

Mechanical energy of a basketball

  • texasgrl05
  • · Replies 2 ·
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2

What is the Ke value for the given reaction at 1800ºC?

  • joejo
  • · Replies 10 ·
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10

Pie shaped loop of radius a carraying a current I

  • aimee
  • · Replies 2 ·
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2

Exam Question: Relativity/Cathode Rays

  • Spastik_Relativity
  • · Replies 5 ·
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5

Weight of a person in a elevator going down

  • stealthcataf
  • · Replies 4 ·
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4

What is the electric field between two charged particles?

  • ajc9387
  • · Replies 3 ·
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3

Help on motion and pressure needed

  • jhaywood
  • · Replies 7 ·
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7

Question regarding Electrical conduction(Resistance)

  • Sanosuke Sagara
  • · Replies 4 ·
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4

Question regarding Electrical conduction(Resistance)

  • Sanosuke Sagara
  • · Replies 6 ·
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6

Physics of Indiana Jones rope swing

  • melissa_y
  • · Replies 3 ·
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3

Understanding the Dynamics of a Simple Pendulum

  • vroman
  • · Replies 3 ·
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3

Final Exam Help: Converging Lens and Light Bulb

  • ajc9387
  • · Replies 2 ·
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2
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2
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4
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2
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7

How Do You Calculate the Initial Velocity of a Bullet in a Momentum Problem?

  • physics noob
  • · Replies 3 ·
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3
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5
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4

Question about acceleration/forces

  • Banana15
  • · Replies 4 ·
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4

Change of variables in integrals

  • Benny
  • · Replies 6 ·
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6

Calculating Angular Speed and Acceleration in Open-Reel Tape Decks

  • texasgrl05
  • · Replies 6 ·
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6

Calculating Kinetic Friction of an 8kg Block

  • Swatch
  • · Replies 8 ·
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8

Why Can't I Use V = Vo + at to Calculate Time for a Car Falling Off a Cliff?

  • Struggling
  • · Replies 2 ·
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2
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2

Why Is the Total Work Done by the Universe on You Zero?

  • Link
  • · Replies 2 ·
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2
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7

What is the Limit of the Square Root Function Using L'Hopital's Rule?

  • monet A
  • · Replies 25 ·
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25

Boyle's law and pressure problem

  • zeithief
  • · Replies 3 ·
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3
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10

What is the angle north of east in this kinematics problem?

  • firstwave
  • · Replies 4 ·
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4

Charge induced on plastic by metal

  • primarygun
  • · Replies 3 ·
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3