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

What is the period of a standing transverse wave on a flexible string?

  • PhysicsPhun
  • · Replies 7 ·
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7
  • Poll Poll

Why is wavelength equal to tank length in wave tank experiment?

  • deimos
  • · Replies 2 ·
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2

Is {(sinx)^2, (cosx)^2} a Basis of W in Linear Algebra?

  • discoverer02
  • · Replies 3 ·
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3

Heat Effects on an Aluminum Annular Ring

  • Xamfy19
  • · Replies 3 ·
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3

Calculating the Volume of Water Displaced by a Kayak

  • psruler
  • · Replies 3 ·
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3

Input and output voltages of a transformer?

  • derfrok
  • · Replies 3 ·
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3

How do you develop your own study habits for science and math?

  • Ebolamonk3y
  • · Replies 5 ·
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5

Batmobile Physics Problem: Solving for Time on a Straight Street in Gotham City

  • raferalston
  • · Replies 2 ·
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2

Environmental significance of fossil fuel use

  • PhYsics0860165
  • · Replies 2 ·
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2

Solving tan(γa) = −γ/β for γ with varying parameter a

  • Norman
  • · Replies 3 ·
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3

Solving Trig Equations: 2cos^2(x)+cos(x)-1=0 in the Interval x≥0 and x≤2π

  • krusty the clown
  • · Replies 2 ·
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2

What is the final nucleus after a series of radioactive decays?

  • athenaroa
  • · Replies 3 ·
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3

How Does Stretching a Wire Affect Its Resistance?

  • cseet
  • · Replies 2 ·
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2

Internuclear separation between ions in a crystal-

  • Claire84
  • · Replies 5 ·
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5

Why do capacitors in parallel and series discharge at different rates?

  • UrbanXrisis
  • · Replies 2 ·
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2

Light wavelength in liquid and critical angle for total internal reflection

  • eku_girl83
  • · Replies 2 ·
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2
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21

How Do You Calculate Diffraction Angles and Grating Lines?

  • mustang
  • · Replies 2 ·
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2

Angular acceleration of a wheel with multiple dynamics questions

  • ProSk8ter474
  • · Replies 2 ·
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2

Angular Acceleration Calculation: Solving Problems with Missed Physics Notes

  • ProSk8ter474
  • · Replies 3 ·
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3

How to draw a force diagram for a charge moving in a magnetic field

  • UrbanXrisis
  • · Replies 10 ·
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10

Saturn's rings and tidal forces on neutron star probes

  • Dingo Jellybean
  • · Replies 4 ·
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4

B field btwn two current carrying wires

  • sonya
  • · Replies 2 ·
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2

A Plane, A pulley and two boxes

  • Divergent13
  • · Replies 4 ·
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4

2002 ap physics c free response #1 question

  • dlau
  • · Replies 3 ·
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3

Solve Algebra 2 Problem 43: 7^3x/2^7x-1=(43.2)^x+2

  • mustang
  • · Replies 2 ·
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2

Trigonometric equations - strange results

  • repugno
  • · Replies 3 ·
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3

Understanding Critical Values of a Function

  • tandoorichicken
  • · Replies 4 ·
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4

Calculating Tension in a Model Plane's Horizontal Circular Motion

  • st3dent
  • · Replies 4 ·
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4

Problem23: Highest Order for 585 nm Grating w/1483 Lines/cm

  • mustang
  • · Replies 5 ·
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5

How Do You Calculate Tension in Wires Supporting a Loaded Rod?

  • jonny17
  • · Replies 2 ·
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2

How Can Rayleigh's Method Determine Beam Oscillation Frequency?

  • JamesJames
  • · Replies 2 ·
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2

Electricity Generated by Magnet Motion Over Coil

  • UrbanXrisis
  • · Replies 10 ·
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10

Linear accelerator physics problem

  • carnom
  • · Replies 4 ·
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4

Making an electromagnetic motor

  • cor_18
  • · Replies 2 ·
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2

Minimum copper and lead mass to sink floating wood

  • jamdr
  • · Replies 13 ·
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13

How Does a Magnetic Field Influence Particle Motion and Flux Calculations?

  • physadam2
  • · Replies 7 ·
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7

Conservation of Linear Momentum in an Explosion of Particles

  • Clutch306
  • · Replies 2 ·
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2

Calculating Average Value of y=x^2√x3+1 from 0 to 2

  • tandoorichicken
  • · Replies 2 ·
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2

Calculating the Impact: Measuring Dive Heights from the Pool

  • fightinag07
  • · Replies 4 ·
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4

Finding Magnification of a Gem Using a Converging Lens

  • mustang
  • · Replies 2 ·
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2

Converging lens focal length and magnification problems

  • mustang
  • · Replies 2 ·
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2

Proper Punctuation: Parentheses and Question Marks in English Writing

  • aychamo
  • · Replies 2 ·
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2

Understanding Waves: Period, Frequency, and Speed of a Vibrating String

  • midgey
  • · Replies 2 ·
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2

Finding member forces in a three-member truss by moment analysis

  • paul11273
  • · Replies 18 ·
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18

Second-order diffraction angle for 3224 slits/cm grating at 463.2 nm

  • mustang
  • · Replies 6 ·
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6

Bifocal lens power for distant vision with near point at 40 cm

  • hibiscus23
  • · Replies 2 ·
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2
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2

Mass dropped into hole through Earth

  • MaximumTaco
  • · Replies 3 ·
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3

What symbol represents momentum: P or ρ?

  • masamune
  • · Replies 2 ·
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2

Centre of Mass & SHM: Help Understanding & Graphing

  • nic0la
  • · Replies 8 ·
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8

Structure constants of Lie groups

  • turin
  • · Replies 2 ·
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2

Impulse response? I need a bit of help with this if anyone can?

  • lizm
  • · Replies 2 ·
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2

Help with Bohr model and hydrogen energy level problems

  • Spectre32
  • · Replies 2 ·
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2

Projectile fired - find maximum height

  • kurtlau
  • · Replies 2 ·
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2

Cracking the Physics Olympiad Problem: Expressing V in 5 Parameters

  • olympiad
  • · Replies 2 ·
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2

Is the Book's Answer Correct for This Circuit Problem?

  • KingNothing
  • · Replies 6 ·
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6

What is the deceleration on an incline?

  • KingNothing
  • · Replies 8 ·
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8

Minimum ionosphere height for destructive interference with radio waves

  • Xamfy19
  • · Replies 2 ·
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2

Having trouble with differential equations and separation of variables

  • cair0
  • · Replies 4 ·
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4

Geomagnetic field demonstration

  • GTdan
  • · Replies 2 ·
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2

Special Relativity- Muons in a Storage Ring

  • Vickitty
  • · Replies 2 ·
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2

Can You Convert an Integral Into an Infinite Series?

  • maxpowers_00
  • · Replies 2 ·
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2

Series and Parallel Circuit Problem

  • moonlit
  • · Replies 2 ·
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2

Series convergence and binomial series in relativity

  • Elkay
  • · Replies 10 ·
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10

Designing an AM Demodulator Circuit with No ICs

  • Trancid
  • · Replies 9 ·
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9

How Does Quantum Mechanics Describe Particle Velocity?

  • curious george
  • · Replies 4 ·
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4

Mechanical energy of cannon ball

  • physics phan
  • · Replies 6 ·
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6
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2

Struggling with AP Multiple Choice: ky Differential Equation

  • tandoorichicken
  • · Replies 2 ·
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2

Solving a Camera Lens Problem: Height of Image on Film

  • jribbe1
  • · Replies 2 ·
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2

Does Earth's mass increase from solar energy using e=mc2?

  • blackflub
  • · Replies 2 ·
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2
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3

Calculate Amplitude of SHM for Block Connected to Spring and Embedded Bullet

  • PhysicsPhun
  • · Replies 3 ·
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3

How Do You Convert dB to W/m² in Sound Intensity Calculations?

  • new324
  • · Replies 6 ·
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6

Relative Brightness of A-E, C+D

  • Empire
  • · Replies 2 ·
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2

QM scattering - Section 19.5 in Shankar

  • gwiazdka
  • · Replies 1 ·
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1

How Do Molecules Stay Distinct Between the Stratosphere and Troposphere?

  • Soilwork
  • · Replies 7 ·
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7

Finding overall uncertainty in g from freefall measurements

  • keil
  • · Replies 2 ·
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2

Magnetic flux through a wire cross-section using Ampere's law

  • AngelofMusic
  • · Replies 2 ·
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2

Eagle flying between two approaching trains at 80 km/h

  • lucianb
  • · Replies 6 ·
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6

What is the inductance of a solenoid with a soft iron core?

  • pattiecake
  • · Replies 2 ·
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2

Calculating Angular Momentum and Precession of a Toy Gyroscope

  • cuz937100
  • · Replies 5 ·
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5

This is very confusing multiple choice question

  • Evergreen
  • · Replies 8 ·
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8

Calculus - Derivatives and Applications

  • toosm:)ey
  • · Replies 6 ·
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6

Finding concavity with implicit differentiation at a point

  • ACLerok
  • · Replies 4 ·
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4
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2

Induced superficial charge distribution of a sphere

  • ReyChiquito
  • · Replies 2 ·
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2

Centripetal acceleration of tire rim and car rounding a turn

  • wikidrox
  • · Replies 2 ·
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2

Dummy Variables in Taylor Series

  • AngelofMusic
  • · Replies 2 ·
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2

Balancing Two Uniform Beams: Calculating Forces & Angles

  • masamune
  • · Replies 2 ·
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2

Can a Linear Transformation Be Onto If the Codomain's Dimension Is Higher?

  • discoverer02
  • · Replies 5 ·
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5

How Does Moving a Magnet Near a Coil Demonstrate Lenz's Law?

  • UrbanXrisis
  • · Replies 3 ·
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3

Maximum velocity and spring constant for bungee cord with 0.176 kg bear

  • g4wonhyo
  • · Replies 1 ·
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1

Finding a factor relationship and minimum of xe^x - 4e^x

  • mcintyre_ie
  • · Replies 16 ·
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16

Lagrange' s eequations of a suspended set of rods

  • student1938
  • · Replies 26 ·
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26

Experiments regarding C of A.M.

  • ACLerok
  • · Replies 2 ·
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2

Solve Radio Inductor Problem: Find Frequency for 12V, 2.2mA, 4.6mH

  • Cernie
  • · Replies 4 ·
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4

Can an 11 eV photon partially excite a hydrogen atom?

  • gnome
  • · Replies 2 ·
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2

Power dissipated by R3 in series circuit with 12V battery

  • MJ
  • · Replies 2 ·
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2