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

Problem involving slits, diffraction, and incident angle.

  • nobb
  • · Replies 1 ·
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1

Pressure in Tank: Increasing or Decreasing?

  • Idea04
  • · Replies 1 ·
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1

Physics Baisic Lab Question and Scalar Components

  • chs1491
  • · Replies 2 ·
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2

Is there a free alternative to MathType and Math Writer?

  • Agnostic
  • · Replies 2 ·
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2

Calculating Acceleration to Avoid Collision of Enterprise & Klingon Ship

  • kirbykirbykirby
  • · Replies 5 ·
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5

Calculating Equilibrium Angle for Charged Sphere on Silk Fiber

  • nateastle
  • · Replies 5 ·
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5

Plotting a Vertical Velocity Graph for a Given Situation

  • Thunderer
  • · Replies 6 ·
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6

Problem involving gravitational constants

  • Xkaliber
  • · Replies 7 ·
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7

Do Inclined Plane Calculations Use Degrees or Radians?

  • Ascetic Anchorite
  • · Replies 23 ·
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23

Finding the separation angle and launch velocity of a trebuchet projectile

  • deltronzero
  • · Replies 1 ·
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1

How Does Top Gun Accurately Depict the Physics of a Flat Spin?

  • DownSetDana
  • · Replies 2 ·
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2

Resultant displacement and angle

  • bearhug
  • · Replies 1 ·
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1

One dimensional motion problem =/

  • Double D Edd
  • · Replies 5 ·
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5

Magnitude of electric field - Problem check

  • duki
  • · Replies 1 ·
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1
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11

Finding the Position of a Particle at the Instant it Changes Direction

  • bearhug
  • · Replies 2 ·
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2

Positive charge distributed uniformly along y axis

  • nateastle
  • · Replies 1 ·
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1

Coconut Movement in Ocean Waves

  • Delzac
  • · Replies 2 ·
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2

Intensity and Interference of Light Beams

  • aiglosicicle
  • · Replies 2 ·
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2

What Determines the Evolutionary Path of Stars?

  • nath_quam
  • · Replies 1 ·
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1
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2

How could spring water lift a person?

  • scalar
  • · Replies 4 ·
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4

How are vectors A and B oriented if A + B = C and A² + B² = C²?

  • User Name
  • · Replies 2 ·
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2

Electric field at center of square with charges +q, -2q, +2q, -q

  • GenMipps
  • · Replies 3 ·
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3

What Determines the Direction of Friction in Physics Problems?

  • coreankim
  • · Replies 7 ·
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7

C 12 physics problem: Water speed and duration of impact

  • faceblah
  • · Replies 3 ·
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3

Calculating Coulombs of Charge in Water

  • Valhalla
  • · Replies 2 ·
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2

What is the Maximum Altitude of a Bullet Fired Straight Up?

  • Arbitrary
  • · Replies 2 ·
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2

Electric Field at Midway Point of Two Opposite Charges

  • GenMipps
  • · Replies 4 ·
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4

You all are such a blessing I .

  • duki
  • · Replies 11 ·
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11

Distance Covered by Puck A at Collision

  • Kalie
  • · Replies 7 ·
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7

Motorcycle Catches a Car (Acceleration)

  • Kalie
  • · Replies 2 ·
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2
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1

Specific heat if boiling water is added during cooling

  • Signifier
  • · Replies 5 ·
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5

Can Vector-Valued Functions Accurately Model Particle Motion in Two Dimensions?

  • opticaltempest
  • · Replies 1 ·
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1

Was Physics Misrepresented in the Movie Apollo 13?

  • Missy81590
  • · Replies 24 ·
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24

What Is the Minimum Height of a Rear-View Mirror to See the Entire Rear Window?

  • sweetgirl86
  • · Replies 4 ·
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4

Solving Jumping Bean Physics Problems

  • shoook
  • · Replies 3 ·
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3

Easy Electical potential problem i cant do

  • ELHEK
  • · Replies 2 ·
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2

Electric flux through a cube problem

  • erik-the-red
  • · Replies 1 ·
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1

Having a little trouble, very typical question

  • DB
  • · Replies 9 ·
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9

Finding position when velocity is 50% of maximum for a vibrating spring

  • eddyb
  • · Replies 21 ·
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21

Radioactivity of an unknown isotope

  • khy86
  • · Replies 3 ·
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3

Pendulum mass and Newton's second law

  • moomoocow
  • · Replies 5 ·
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5

Momentum, impulse, and power definitions

  • pavadrin
  • · Replies 5 ·
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5

Egg Drop Project: How to Make it Work?

  • physics=cool
  • · Replies 3 ·
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3

Why Do Students Struggle with Resolving Forces?

  • kindaichi
  • · Replies 1 ·
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1

Building a submarine model for a one-week physics competition

  • mysassygirl
  • · Replies 3 ·
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3
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1

Is the statement about lunar orbit and Earth's motion correct?

  • lebbo
  • · Replies 10 ·
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10

Dont Understand how to Figure out this columbs law question.

  • Papak
  • · Replies 2 ·
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2

Mission: Impossible - The Movie

  • H0pe_LRomantix
  • · Replies 1 ·
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1

How Do You Calculate the X Component of Force in Coulomb's Law?

  • nateastle
  • · Replies 2 ·
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2

Critique of my first proof from Analysis by Steven Lay

  • opticaltempest
  • · Replies 4 ·
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4

Normal force on inclined planes.

  • coreankim
  • · Replies 12 ·
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12

Motion of a jumper - Find the mass

  • Jess048
  • · Replies 3 ·
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3

Finding distance to the Gateway Arch and ship displacement components

  • taylor89
  • · Replies 9 ·
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9

Action/reaction force in relation to Newton's 3 law

  • student12phys
  • · Replies 2 ·
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2

Flowerpot passing window kinematics problem

  • AuraofMana
  • · Replies 3 ·
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3

Having trouble using bernoulli eq.

  • WyldFyr
  • · Replies 12 ·
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12

Field and Waves Electromagnetics books

  • big man
  • · Replies 8 ·
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8

Why Does Air Resistance Increase with Velocity in Freefall?

  • danago
  • · Replies 9 ·
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9

Calculating Total Charge Flowing Through Circuit

  • Valhalla
  • · Replies 1 ·
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1

Electric field at center of square with alternating charges

  • erik-the-red
  • · Replies 2 ·
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2

Question that I answering [projectile motion]

  • bee24
  • · Replies 4 ·
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4

SHM question and Current question.

  • al_201314
  • · Replies 6 ·
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6

Calculating Centre of Mass with Added Weight on a Station Wagon

  • John O' Meara
  • · Replies 9 ·
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9

Increase in speed, decrease in time

  • keinekatze
  • · Replies 4 ·
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4
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1

How can I find the superposition of two vectors with a phase shift of pi/4?

  • Kazza_765
  • · Replies 6 ·
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6

Fluid dynamics / water making a radius

  • angel_of_pizza2000
  • · Replies 2 ·
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2

Modeling Object Motion in a Viscous Liquid: mg - kv = m(dv/dt)?

  • Pseudo Statistic
  • · Replies 1 ·
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1

Static pressure in water towers vs dynamic pressure in pipes

  • Idea04
  • · Replies 1 ·
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1

Running the red light (car physics)

  • SamuraiTom
  • · Replies 4 ·
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4

Estimating Earth's total water mass from surface coverage

  • bearhug
  • · Replies 3 ·
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3

Why we draw the angle with y-axis?

  • Aladin
  • · Replies 1 ·
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1

Special Relativity and Binomial Expansion

  • Xkaliber
  • · Replies 2 ·
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2

Moment of inertia of a Conic Frustum

  • Ascetic Anchorite
  • · Replies 5 ·
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5

Calculating Minima Spots Between Two In-Phase Speakers

  • NotMrX
  • · Replies 6 ·
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6

Hydrogen Spectrum: Lyman, Balmer, Paschen & Pfund Series

  • Amith2006
  • · Replies 1 ·
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1
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4

Particle statics - A bridge span

  • shogunultra
  • · Replies 2 ·
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2

Is Entropy Zero at Absolute Zero?

  • Delzac
  • · Replies 1 ·
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1

What is the power of the weightlift?"

  • danago
  • · Replies 2 ·
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2

Closest distance for alpha particle to gold nucleus in Rutherford scattering

  • fatboy12341
  • · Replies 4 ·
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4

Velocities involved in partially inelastic collisions

  • Signifier
  • · Replies 1 ·
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1

Two pucks colliding on air hockey table with unknown final velocities

  • chmilne
  • · Replies 2 ·
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2

Simple problem:Voltage of capacitors AFTER closing a switch

  • easyyy
  • · Replies 2 ·
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2

Is Kinetic Energy Truly Zero at Absolute Zero?

  • Delzac
  • · Replies 18 ·
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18

Particle statistics- Three forces on force table

  • shogunultra
  • · Replies 3 ·
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3

Refraction Angle: Find the Answer to Your Question

  • StudentofPhysics
  • · Replies 2 ·
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2

Does Slower Flowing Fluid Experience Less Pressure Drop?

  • Idea04
  • · Replies 2 ·
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2

Three Charged Particles in an xy-plane

  • erik-the-red
  • · Replies 2 ·
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2

How Do Camera Settings Like Aperture and Shutter Speed Affect Exposure?

  • physicsgal
  • · Replies 2 ·
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2

8 million uranium atoms in milligrams?

  • paulhunn
  • · Replies 4 ·
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4

How Do You Make A Ping Pong Launcher?

  • DarkWeiss
  • · Replies 6 ·
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6

Solving a 2-Dimensional Collision Problem with Momentum Conservation

  • yaminohohenheim
  • · Replies 5 ·
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5

Solving "An Person Pushes a Box Up a Hill: A Physics Problem

  • danago
  • · Replies 2 ·
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2

Electrons being fired at cold atomic hydrogen

  • Saketh
  • · Replies 2 ·
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2

Finding acceleration of a mass on a frictionless 50-degree incline

  • danago
  • · Replies 9 ·
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9