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

Magentism: Solving Proton Homework Statement

  • science.girl
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2

Parabolic Equation assistance please.

  • GregD603
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3
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2

What is the Number of Coulombs of Positive Charge in Water?

  • GenMipps
  • · Replies 5 ·
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5

Cathode Ray Tube Magnetic Question

  • science.girl
  • · Replies 2 ·
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2

Thermodynamics: Horizontal Tube w/ Sliding Piston - Q&A

  • C.E
  • · Replies 33 ·
2
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33

Waveform Revision: Past Exam Papers for Test Prep on Thursday

  • TommyM
  • · Replies 3 ·
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3

Forces on blocks with 3 different masses.

  • xgoddess210
  • · Replies 5 ·
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5

R is the constant in the ideal gas law.

  • the whizz
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3

How Does Light Intensity Vary with One Slit in a Diffraction Experiment?

  • Vaseline
  • · Replies 1 ·
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1

Calculation of magnetic field from electric field

  • maggas
  • · Replies 1 ·
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1

Rotational Inertia of merry go round

  • bphysics
  • · Replies 1 ·
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1

Finding Slit Separation Using the Double-Slit Apparatus

  • patelpalak
  • · Replies 5 ·
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5

Entropy Change in a Carnot Engine

  • lms_89
  • · Replies 8 ·
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8

Significant Digits in Measurements and Computations

  • HussanAli
  • · Replies 2 ·
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2

Right Hand Rule: Proton or Electron?

  • Air
  • · Replies 3 ·
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3

Power Loss In Transmission Lines (Again?)

  • Jiachao
  • · Replies 7 ·
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7

Does Higher Resistance Mean Brighter Bulbs?

  • tokoG
  • · Replies 13 ·
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13

The Mystery of the Unchanging Magnetic Force on a Circular Loop

  • desmal
  • · Replies 3 ·
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3

Calculating Heat Needed to Heat 5 kg. Water from 20C to Steam at 100C

  • Spaniard
  • · Replies 11 ·
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11

Calculating Electron Trajectory in an Electric Field

  • rhettfraser
  • · Replies 6 ·
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6

Why Is My Calculation of Net Torque Incorrect?

  • jghlee
  • · Replies 2 ·
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2

Effects of Placing a Compass Under a Cable

  • UNknown 2010
  • · Replies 4 ·
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4

Help with Newtons Second Law Question Please.

  • 123tricks
  • · Replies 3 ·
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3

Power Dissipation in Circuit Calculation

  • brentwoodbc
  • · Replies 7 ·
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7

Length Contraction/Time Dilation

  • prime-factor
  • · Replies 10 ·
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10

Can the normal force between a blocks accelerating together be zero?

  • mistymoon_38
  • · Replies 3 ·
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3

Acceleration of a Textbook on a Flat Surface

  • frostking
  • · Replies 2 ·
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2

Smallest distance between object and image - lens.

  • Kruum
  • · Replies 4 ·
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4

Calculating Ball Impact Speed: Solving the Physics Problem

  • Jjolly65
  • · Replies 3 ·
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3

Magnetic field of a finite-length wire

  • Chen
  • · Replies 6 ·
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6

Beam and Hinge Equilibrium Analysis

  • sinequanon
  • · Replies 3 ·
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3

How Much Work Is Needed to Position a Charge in an Equilateral Triangle?

  • indie452
  • · Replies 4 ·
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4

2 masses attached with a spring falling

  • Dweirdo
  • · Replies 8 ·
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8

Final Project Presentation Topic?

  • RobSoko315
  • · Replies 1 ·
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1

A question about electrostatics / Gauss's law

  • physics213
  • · Replies 4 ·
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4

Calculating Jim Goff's Hourly Wage

  • abhikesbhat
  • · Replies 3 ·
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3

How Fast Does a Ball Move When Pushed by Compressed Air?

  • brunettegurl
  • · Replies 8 ·
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8

Finding the coefficients of friction

  • wilson_chem90
  • · Replies 15 ·
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15

Angular Velocity of the Hubble Space Telescope

  • joemama69
  • · Replies 24 ·
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24

Magnetic Flux & Magnetic Density

  • UNknown 2010
  • · Replies 4 ·
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4

How Is Charge Distributed in a Conductor with an Internal Cavity?

  • Air
  • · Replies 5 ·
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5

Single slit Diffraction using green light

  • IvaNMK
  • · Replies 1 ·
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1

Gravitational pull, superposition

  • lemonpie
  • · Replies 7 ·
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7

What is the Terminal Velocity and Drag at High Altitudes?

  • bigboss
  • · Replies 4 ·
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4

How Do You Calculate Uncertainty for a Perfect Straight Line?

  • leo037
  • · Replies 4 ·
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4

Kinetic Friction + Acceleration

  • cd19
  • · Replies 11 ·
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11

How to Find h in Hydrostatics?

  • Saladsamurai
  • · Replies 3 ·
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3

A monatomic gas is adiabatically compressed

  • vorcil
  • · Replies 9 ·
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9

Faraday's Law problem involving selenoid.

  • Kizaru
  • · Replies 2 ·
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2

Electricity and Magnetism Question (Related to circuits). .

  • Partap03
  • · Replies 5 ·
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5

Finding equation of the position

  • Lord Dark
  • · Replies 7 ·
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7

2 Problems i need hlep with, Acceleation and Time

  • Maury_702
  • · Replies 3 ·
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3

Determining scale readings given different densities

  • heyrefusuck
  • · Replies 1 ·
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1

Calculating Velocity for a Soap-Box Car with Rolling Wheels

  • joemama69
  • · Replies 12 ·
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12

Calculate electric field at origin, with 3 charges

  • adca14
  • · Replies 4 ·
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4

Finding initial velocity and time Please

  • red_viper_88
  • · Replies 33 ·
2
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33

Dragging loop out of magnetic field (Finding Force)

  • GDGirl
  • · Replies 5 ·
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5

What Forces Determine the Stability of a Ladder in Static Equilibrium?

  • lemonpie
  • · Replies 4 ·
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4

Force on a Charged Object in a Field

  • Boozehound
  • · Replies 11 ·
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11

Calculating Bending Moment and Shear Forces in a Beam | Helpful Tips

  • cd19
  • · Replies 12 ·
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12

Calculating Effective Focal Length | Mirror Equation Help - 19mm Answer

  • radiofruit
  • · Replies 5 ·
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5

Two boxes connected with a pulley, one hanging

  • frozenguy
  • · Replies 19 ·
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19

I don't really understand Coulombs Law

  • bran91bran
  • · Replies 1 ·
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1

Contracting Loop in a Magnetic Field (emf and current)

  • GDGirl
  • · Replies 2 ·
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2

Find the tension in a rope with a 60kg man hanging on one side

  • bigboss
  • · Replies 4 ·
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4

Simple harmonic motion question

  • no1schuifan
  • · Replies 5 ·
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5

Direction of the electric field

  • soopo
  • · Replies 2 ·
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2

Solved: Density of Induced Charge is 7.083*10-7 C/m2

  • Dell
  • · Replies 1 ·
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1

Hydrostatics Problem (Why is this Wrong?)

  • Saladsamurai
  • · Replies 3 ·
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3

Forces (moment of inertia) Question

  • Lord Dark
  • · Replies 6 ·
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6
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5

Understanding Moment of Inertia in a Rotational System

  • Lord Dark
  • · Replies 5 ·
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5

Projectile Problem: Solve for Height of Building & More

  • Lord Dark
  • · Replies 11 ·
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11

Solve Hot-Wheels Car Mass, Velocity for Height

  • smithers11
  • · Replies 2 ·
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2

How Does the Millikan Oil Drop Experiment Illustrate the Balance of Forces?

  • General_Sax
  • · Replies 1 ·
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1

Moment of Inertia: Solve for Sphere & Rod

  • Lord Dark
  • · Replies 9 ·
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9

Finding the speed of a metal ball

  • smithers11
  • · Replies 3 ·
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3

Speed of Particles Homework: E=mc^2, E=Bev, Answer (a)?

  • soopo
  • · Replies 2 ·
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2

Isobarric, Isochoric, Adiabatic cycles

  • Trenthan
  • · Replies 7 ·
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7

How do i find the difference in voltage from point A to B

  • Dell
  • · Replies 3 ·
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3

Can someone please check this radiochemistry question please

  • shenzys
  • · Replies 1 ·
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1

Solving Collision & Rotation Q: Find Impulse, Force, Speed, Length

  • Lord Dark
  • · Replies 1 ·
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1

Some questions(pulleys,rotation)

  • Dweirdo
  • · Replies 3 ·
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3

Work done in Adiabatic, Quasistatic-compression

  • Trenthan
  • · Replies 4 ·
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4

Converting Units in the Lorentz Force Law

  • dulask
  • · Replies 2 ·
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2

Find Net Capictance: Capacitor C

  • Garvit
  • · Replies 4 ·
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4

Can Diffraction Occur with Any Size Opening Relative to Wavelength?

  • Nerd
  • · Replies 13 ·
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13

Problem on thermodynamics first law again

  • ky92
  • · Replies 5 ·
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5

What is the Angle Between Forces in Equilibrium?

  • kushalksoni
  • · Replies 2 ·
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2

What is the volume of an air bubble in water at a depth of 50m?

  • soopo
  • · Replies 7 ·
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7

Capacitance and distance between plates

  • soopo
  • · Replies 4 ·
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4

Help with questions on Sound Waves and Harmoics

  • kim3k84
  • · Replies 1 ·
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1

Max Force of Floor on Ball: Calculate

  • brunettegurl
  • · Replies 12 ·
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12

Finding the CM of a Bar of Variable Density

  • Lopina
  • · Replies 3 ·
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3

Scientific Principles for School Project

  • dhruv_arora
  • · Replies 1 ·
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1

Acceleration of the lower block

  • brunettegurl
  • · Replies 15 ·
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15

Five train cars and their final speed

  • brunettegurl
  • · Replies 3 ·
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3

Newton's 3rd law and spacewalking

  • sunbunny
  • · Replies 9 ·
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9

Energy in a Capacator with a Diaelectric

  • r16
  • · Replies 5 ·
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5