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

Calculating Net Electrostatic Force in a Square Configuration

  • name_ask17
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2

How Do You Calculate the Potential Energy in a Charge Configuration?

  • flyingpig
  • · Replies 32 ·
2
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32

Object falling down and object falling up

  • physicN00Bz
  • · Replies 2 ·
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2

What is the angular speed of the insect?

  • Resmo112
  • · Replies 1 ·
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1

I'm having a hard time understanding how to calculate tension. Help please?

  • RainbowMop
  • · Replies 8 ·
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8

Calculating Forces on Two Charges Above a Conducting Sheet

  • bon
  • · Replies 1 ·
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1

Total Displacement with directions

  • tinnguyen123
  • · Replies 2 ·
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2

Help with Impulse? Answers Here!

  • led23
  • · Replies 5 ·
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5

Basic trigonometry for biomechanics

  • aljrx8
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1

Conservation of Momentum Involving Friction

  • Goatsenator
  • · Replies 3 ·
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3

What are the bodies of the couple's total volume in liters

  • chawki
  • · Replies 15 ·
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15

How Does Dolphin Movement Affect Sound Frequency Perception?

  • bfitzp
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1

Finding Voltage at D and Potential Difference Between B & E

  • zorro
  • · Replies 4 ·
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4
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5

Electric Potential / Electric Field Question

  • baillik
  • · Replies 1 ·
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1

Resultant Force on -2x10^-6 C Point Charge Near 3 & -4x10^-6 C

  • wheybags
  • · Replies 8 ·
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8

Constructing a 1nF Capacitor with >10kV Breakdown Potential

  • Bryon
  • · Replies 2 ·
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2
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7

Rearranging Resistance Formula: Y = Mx + C

  • chunbryan
  • · Replies 2 ·
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2

Minimum Tension for Suspended 100kg Sign - Tension and Wires

  • russellmejia
  • · Replies 1 ·
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1

Measure the diameter of a marble with a micrometer

  • Jadaav
  • · Replies 5 ·
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5

Can Friction Be Zero for a Rolling Sphere on a Surface?

  • a.ratnaparkhi
  • · Replies 7 ·
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7

Spherical shells and electric potential

  • almn22
  • · Replies 1 ·
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1

General Question Regarding Kirchhoff's Loop Rule

  • cep
  • · Replies 1 ·
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1

Convex Lenses: Determining Real/Virtual Images

  • marla1
  • · Replies 3 ·
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3

Singlet- triplet splitting energy of He what does it mean?

  • astrosona
  • · Replies 3 ·
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3

How Is Electric Flux Calculated Through a Nonuniform Field in a Box?

  • asz304
  • · Replies 34 ·
2
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34

Find time given initial velocity, distance and acceleration.

  • physicN00Bz
  • · Replies 3 ·
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3

Conservation of Momentum in a Frictionless System with External Forces

  • milkyway11
  • · Replies 6 ·
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6

What is the length of the moment arm.

  • zdickz
  • · Replies 1 ·
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1

How Does Pulley Torque Affect Wire Tension in a Frictionless System?

  • mvpshaq32
  • · Replies 1 ·
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1

Dielectric and energy. I probably did it wrong, no I DID IT WRONG.

  • flyingpig
  • · Replies 2 ·
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2

Difference between Electric flux density,electric field strength .

  • sachin123
  • · Replies 5 ·
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5

Is My Understanding of Gauss's Law and Flux Contradictory?

  • flyingpig
  • · Replies 6 ·
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6

Solve Distance from Velocity Time Graph - Vf2=Vo2+2ad

  • ThomasMagnus
  • · Replies 2 ·
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2

Calculating Electric Force in a Dipole at Long Distances

  • cathb
  • · Replies 7 ·
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7

RC Circuit: charges on two capacitors

  • physics222
  • · Replies 2 ·
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2

What Is the Acceleration Constraint in This Pulley System?

  • ezp0004
  • · Replies 3 ·
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3

Effects of Distance and Voltage on Energy Stored in Capacitors

  • displayname
  • · Replies 4 ·
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4

Normal force on a block on an incline

  • emmy
  • · Replies 10 ·
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10

Prove that a great circle is a geodesic

  • miew
  • · Replies 1 ·
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1

How do you solve calorimetry problems?

  • flyingpig
  • · Replies 23 ·
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23

Calculating Forces in x-y Plane on 5.60 kg Mass

  • alfredo24pr
  • · Replies 2 ·
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2

Sound wave interfernce on a large circle

  • jwxie
  • · Replies 4 ·
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4

How Is the Sun's Angle of Inclination Calculated from Underwater?

  • akmphy
  • · Replies 8 ·
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8

Find Tension of cable and momentum about point

  • Pete_01
  • · Replies 8 ·
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8

Calculating Constant Engine Force for Motorcyclist Acceleration

  • chawki
  • · Replies 7 ·
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7

Conceptual Electric field question

  • irishbob
  • · Replies 2 ·
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2

Solving a Force Problem: Using Components of the Force

  • aimee3
  • · Replies 6 ·
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6
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9

Where is the point when the potential is zero?

  • asz304
  • · Replies 4 ·
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4

Calculating Satellite Orbit Radius on the Moon

  • kim123
  • · Replies 1 ·
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1

Change in Resistance as a Wire is Stretched

  • cep
  • · Replies 8 ·
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8

What are the current and power equations for a double battery circuit?

  • lil_angel_007
  • · Replies 1 ·
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1

Capacitor how the plates are connected

  • rasmusuperfan
  • · Replies 3 ·
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3

Inclined plane/gravity question

  • artie1
  • · Replies 2 ·
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2

A bullet from speeding to full stop.

  • chawki
  • · Replies 20 ·
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20

How Accurate Is My Gradient Calculation for Maximum Acceleration?

  • Peter G.
  • · Replies 15 ·
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15

How Does an Object's Trajectory Intersect with a Sloped Line?

  • grinosaurus
  • · Replies 3 ·
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3

Masses on inclined planes and pulleys

  • Patra
  • · Replies 2 ·
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2
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1

Solve Box on an Incline with Trig, Geom & Newtons Laws

  • Ainulph
  • · Replies 2 ·
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2

What is the net force on a rectangular loop near a long straight conductor?

  • jyothsnapb
  • · Replies 2 ·
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2

How Do You Calculate Charge in Parallel Capacitors?

  • name_ask17
  • · Replies 7 ·
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7

Calculating η for a Diode: A Puzzling Experiment

  • jono90one
  • · Replies 2 ·
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2

Projectile and forces formulae question

  • Kurokari
  • · Replies 3 ·
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3

Inclined Plane, 2 masses, 1 pulley - Friction

  • glossolalia
  • · Replies 3 ·
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3

Electric Potential from Electric Field

  • jaguar7
  • · Replies 3 ·
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3

Is Acceleration Instantaneous? The Role of Time in Changing Forces

  • tasveerk
  • · Replies 6 ·
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6

What is the net torque on a pivoted metal plate due to three forces?

  • mvpshaq32
  • · Replies 1 ·
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1

Physics Electrostatics Question

  • Sneha_rk
  • · Replies 5 ·
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5

Electric Field Lines and Equipotential Contours

  • jaguar7
  • · Replies 12 ·
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12

What Is the Speed of the Blocks When They Are at the Same Height?

  • DrWillVKN
  • · Replies 3 ·
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3

Calculate electromagnetic momentum given a solenoid and point charge

  • Bhumble
  • · Replies 3 ·
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3

Physics Experts Need some help with Potential Energy and Potential

  • whatisphysics
  • · Replies 12 ·
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12

Why Water Is Lost During Heating

  • chiddler
  • · Replies 2 ·
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2

Projectile Motion Problem: Calculating Distance and Velocity

  • jill2040
  • · Replies 5 ·
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5

The Lake House: Mike and Tina's Race to the Sauna

  • chawki
  • · Replies 6 ·
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6

How to Derive the Simplified Form of Modified Euler Equations?

  • Telemachus
  • · Replies 2 ·
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2

Solving Car Battery Power Output Problem

  • Prodigalvanic
  • · Replies 5 ·
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5

What is the significance of the green line in the graph?

  • flyingpig
  • · Replies 7 ·
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7

How Do You Calculate the Average Force on a Driver in a Crash?

  • jayberd
  • · Replies 5 ·
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5

Forces in Truss Members (Statics)

  • cpmustang07
  • · Replies 7 ·
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7

Finding the angle when given the coefficient of friction

  • NYILoveYou
  • · Replies 15 ·
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15

Help with terrestrial magnetism

  • sachin123
  • · Replies 14 ·
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14

Help determining the sound wave function

  • jwxie
  • · Replies 4 ·
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4
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28

Elastic collision of an alpha particla and Lead

  • panders3
  • · Replies 3 ·
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3

Calculating Car Distances: Uncertainty in Car Gaps and Lengths

  • 123webfkebf
  • · Replies 4 ·
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4

Resultant of thirty vectors of a polygon

  • sadaf2605
  • · Replies 2 ·
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2

Resolution of Optical Instruments Question

  • smoics
  • · Replies 1 ·
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1

What is the equivalent resistance across points a and b?

  • Piyu
  • · Replies 4 ·
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4

Verifying V Graph and Acceleration Calculations

  • Peter G.
  • · Replies 2 ·
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2

How is momentum conserved in an inelastic collision?

  • II Ziv II
  • · Replies 4 ·
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4

Loop Currents for Circuits (using matrix)

  • mneox
  • · Replies 4 ·
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4

How do inclined planes affect forces on an object?

  • man0005
  • · Replies 4 ·
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4

Conservation of Momentum and the Spaceman's Return to His Craft

  • MagikalGiant
  • · Replies 2 ·
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2

Acceleration on an inclined plane

  • Ohoneo
  • · Replies 1 ·
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1

How Do You Calculate Capacitor C1's Value After Connection?

  • Qwerty459
  • · Replies 3 ·
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3

Calculating Resistance: How Do You Determine Resistance in a Conductor?

  • leon24
  • · Replies 1 ·
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1