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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.

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What Angle Does the Polarizing Sheet's Axis Make with the Horizontal Direction?

Kathi201
Nov 18, 2008 · Replies 1 · Nov 19, 2008

Replies: 1

How Steep is the Hill if a Car Uses More Power Climbing It?

curly_ebhc
Nov 18, 2008 · Replies 1 · Nov 19, 2008

Replies: 1

Surface charge distribution of two metal spheres

jdstokes
Nov 19, 2008 · Replies 2 · Nov 19, 2008

Replies: 2

Transverse Wave on a String: Speed & Acc., Wavelength, Period, Prop. Speed

Husker70
Nov 19, 2008 · Replies 1 · Nov 19, 2008

Replies: 1

Find Orig. Speed 3.0kg Mass After Frictionless Explosion

ScullyX51
Nov 18, 2008 · Replies 1 · Nov 19, 2008

Replies: 1

How to Calculate Kinetic Energy and Momentum of a Thrown Ball?

JWDavid
Nov 18, 2008 · Replies 9 · Nov 19, 2008

Replies: 9

How do we calculate experimental errors?

InSpiRatioNy
Nov 18, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

A stone is thrown at an angle of 36.87 degrees

devanlevin
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

Submarine depth and pressure problem - mastering physics

Shayna
Nov 18, 2008 · Replies 7 · Nov 18, 2008

Replies: 7

Barrel of Fun - Circular Motion

thaixicedxtea
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

How Do You Calculate the Amplitude of Oscillation for a Spring-Mass System?

kristibella
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

Why Is 2r Used in Calculating the Masses in Plaskett's Binary System?

unknown_2
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

What is the force of the track on the car?

ScullyX51
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

Max Compressive Stress in Cane: 0.00245 MPa

uno
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

Collision Conservation of momentum

myoplex11
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

Rotational Motion of a pendulum bob

piizexakly3
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

How can torque and magnetic field affect the power output of an electric motor?

Sheneron
Nov 17, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

Gravitation: Which formula exactly?

StingerManB
Nov 18, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

What is the purpose of this diagram in scientific research?

mtavera1990
Nov 18, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

Cons. of energy with rotational motion

musicfairy
Nov 18, 2008 · Replies 4 · Nov 18, 2008

Replies: 4

Simple kinematic equations question?

sbacker
Nov 17, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

Magnetic field inside capacitor - is this right?

bcjochim07
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

Distance of hearing a radio station

gillyr2
Nov 16, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

Is the Laser-Induced Motion in SHM or Mechanics?

Jack_O
Nov 18, 2008 · Replies 4 · Nov 18, 2008

Replies: 4

Zero velocity and zero acceleraton

Throwback24
Nov 18, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

Optical Spectroscopy and Atomic Structure

sheri1987
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

What Determines the Velocity of a Baseball After Being Hit?

eiktmywib
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

Optics - For what distance must we focus our eyes to see this image

Kathi201
Nov 17, 2008 · Replies 10 · Nov 18, 2008

Replies: 10

An object placed in front of a plane mirror

Kathi201
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

Incident Intensity of light transmitted

Kathi201
Nov 18, 2008 · Replies 4 · Nov 18, 2008

Replies: 4

Effect of Air Resistance on the Speed of a Thrown Ball

sammyj
Nov 18, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

Space station living quarters problem

sweedeljoseph
Nov 17, 2008 · Replies 6 · Nov 18, 2008

Replies: 6

How Far From Shore Is the Dog After Walking on the Boat?

JWDavid
Nov 17, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

Relative kinematics and radius of curvature

springo
Nov 17, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

Elastic Deformation through compression (stress)

fanie1031
Nov 18, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

How Do You Calculate Final Speed with Constant Acceleration?

NukeNuke
Nov 13, 2008 · Replies 12 · Nov 18, 2008

Replies: 12

How Do You Calculate the Overall Center of Gravity for a Person?

xlaserx7
Nov 18, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

Simple Algebra Question: Finding the Value of X in Equations

bengaltiger14
Nov 17, 2008 · Replies 4 · Nov 18, 2008

Replies: 4

Net magnetic force in unit-vector notation

Mike88
Nov 17, 2008 · Replies 1 · Nov 18, 2008

Replies: 1

What is the theoretical maximum distance for a rotating wheel with added weight?

supamanc
Nov 17, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

Conservation of momentum and SHM of a spring

boredaxel
Nov 18, 2008 · Replies 4 · Nov 18, 2008

Replies: 4

How Can a Block Stay on a Moving Cart Without Falling?

nns91
Nov 17, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

SHM - Horizontal Spring Question

GX255
Dec 16, 2007 · Replies 2 · Nov 18, 2008

Replies: 2

Calculating orbital velocity at periastron

ketkup
Nov 17, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

Amplitude of a wave hitting a boat

itryphysics
Nov 15, 2008 · Replies 42 · Nov 18, 2008

2

Replies: 42

Weightless horizontal bar equilibrium

nora00
Nov 17, 2008 · Replies 4 · Nov 18, 2008

Replies: 4

Stick thrown in air physics problem

ritwik06
Nov 17, 2008 · Replies 4 · Nov 18, 2008

Replies: 4

General equation of a travelling wave and standin waves on a string.

Nikhil Kumar
Nov 17, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

Projectile Motion Homework: Calculating Net Height for Daredevil Cannon Launch

ssalem2
Nov 17, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

Change in pressure using PV=nRT

rinarez7
Nov 17, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

Solve Integral Problem: Work Done By Gas in Barrel

alucrid
Nov 17, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

What is the Solution for Finding Ball's Speed at Impact and Maximum Height?

ScullyX51
Nov 18, 2008 · Replies 5 · Nov 18, 2008

Replies: 5

Determining Juliet's Weight Using Center of Mass Principle

stanford1463
Nov 18, 2008 · Replies 2 · Nov 18, 2008

Replies: 2

Really stuck on a Gravitation Question

grantP
Nov 17, 2008 · Replies 3 · Nov 18, 2008

Replies: 3

What Is the Required Distance for Young's Double-Slit Experiment?

Kris1120
Nov 17, 2008 · Replies 12 · Nov 18, 2008

Replies: 12

How High to Release a Granite Cube to Achieve Specific Speed in a Steel Cube?

mrjoe2
Nov 16, 2008 · Replies 8 · Nov 17, 2008

Replies: 8

Double slit and colored wavelength

Kris1120
Nov 17, 2008 · Replies 4 · Nov 17, 2008

Replies: 4

PLEEASE HELP I AM LOST Thank you.

madd_bm
Nov 17, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Torricelli's Theorem and etc. help

crhscoog
Nov 17, 2008 · Replies 11 · Nov 17, 2008

Replies: 11

Diffraction grating and red light

Kris1120
Nov 17, 2008 · Replies 3 · Nov 17, 2008

Replies: 3

Find Acceleration with an angle

MusicalAyame0
Nov 17, 2008 · Replies 2 · Nov 17, 2008

Replies: 2

Calculating Tension - Homework Statement & Solution

FOX2PRO
Nov 17, 2008 · Replies 3 · Nov 17, 2008

Replies: 3

What is the equation for finding the position of an elevator at any given time?

flouran
Nov 16, 2008 · Replies 4 · Nov 17, 2008

Replies: 4

Understanding Circular Motion: Gravitational and Centripetal Forces Explained

phys1618
Nov 15, 2008 · Replies 14 · Nov 17, 2008

Replies: 14

Calculating the Height and Speed of a Stationary Satellite | Help Needed

phys1618
Nov 14, 2008 · Replies 13 · Nov 17, 2008

Replies: 13

Sound to travel form the TV to the viewer

zeshkani_usa
Oct 17, 2008 · Replies 4 · Nov 17, 2008

Replies: 4

What Did I Do Wrong in My Conservation of Energy Calculation?

Maiia
Nov 17, 2008 · Replies 3 · Nov 17, 2008

Replies: 3

Finding Values for Thrown Stone from 45m Building

aquapod17
Nov 17, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Solving Friction Force Between Plank & Sphere

ritwik06
Nov 17, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Solving Inertia of a Record Homework

pucr
Nov 17, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

When Can the Mass of a Suspended Bar Be Ignored in Torque Calculations?

mdewdude
Nov 17, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Magnitude and Direction of Puck on Ice

cupra
Nov 17, 2008 · Replies 4 · Nov 17, 2008

Replies: 4

What Is the Torque About the Knee at Different Leg Angles?

bmandrade
Nov 17, 2008 · Replies 17 · Nov 17, 2008

Replies: 17

Rotational Motion (thin hollow pipe)

Bones
Nov 16, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Collision- I don't think conservation of linear momentum can be established

fluidistic
Nov 17, 2008 · Replies 2 · Nov 17, 2008

Replies: 2

How Does the Bohr Model Explain Energy Levels in One-Electron Atoms?

Ousted
Nov 16, 2008 · Replies 2 · Nov 17, 2008

Replies: 2

How high does a baton twirler throw a baton in 1.111111111111 seconds?

sweedeljoseph
Nov 17, 2008 · Replies 3 · Nov 17, 2008

Replies: 3

Net Work Done on 15.8kg Block: 51907.724 J

DollarBill
Nov 17, 2008 · Replies 2 · Nov 17, 2008

Replies: 2

Solving Franck-Hertz Curve Questions for Mercury

ronny45
Nov 13, 2008 · Replies 5 · Nov 17, 2008

Replies: 5

How Do You Calculate Total Displacement in Projectile Motion?

ssalem2
Nov 17, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Magnetic force question - should be easy

bcjochim07
Nov 16, 2008 · Replies 2 · Nov 17, 2008

Replies: 2

How Far Does the Arrow Fall Short of the Target?

chrozer
Nov 17, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Finding velocity (deals with coefficient of kinetic energy)

mandaa123
Nov 17, 2008 · Replies 3 · Nov 17, 2008

Replies: 3

Angular speed people walking problem

sweedeljoseph
Nov 17, 2008 · Replies 9 · Nov 17, 2008

Replies: 9

How to find the fourier transform of exp(-|x|)

samdawy
Nov 17, 2008 · Replies 6 · Nov 17, 2008

Replies: 6

Help I get exactly 1/2 of the correct answer for phase constant calculation

996gt2
Nov 17, 2008 · Replies 2 · Nov 17, 2008

Replies: 2

What is the Work and Friction in This Incline Scenario?

marker403
Nov 17, 2008 · Replies 2 · Nov 17, 2008

Replies: 2

Calculate Bullet Speed from Angular Displacement and Rotational Speed

sweedeljoseph
Nov 17, 2008 · Replies 10 · Nov 17, 2008

Replies: 10

Is the Collision and Friction Report Accurate?

nach
Nov 16, 2008 · Replies 10 · Nov 17, 2008

Replies: 10

What happens to the current when this solenoid's diameter is doubled?

selishaphysic
Nov 17, 2008 · Replies 3 · Nov 17, 2008

Replies: 3

Gravitational Force on Point Mass by Uniform Wire and Line

asleight
Nov 15, 2008 · Replies 21 · Nov 17, 2008

Replies: 21

How Do You Calculate Tension in a Two-Block Pulley System?

Bones
Nov 16, 2008 · Replies 14 · Nov 17, 2008

Replies: 14

Michelson interferometer - change splitting pattern

jaejoon89
Nov 17, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Friction free tug of war - result check

JWDavid
Nov 17, 2008 · Replies 2 · Nov 17, 2008

Replies: 2

Find Resistivity of Germanium Sample Setup

atwong713
Nov 14, 2008 · Replies 12 · Nov 17, 2008

Replies: 12

What is an Adiabatic Expansion Coefficient?

Natla
Nov 16, 2008 · Replies 4 · Nov 17, 2008

Replies: 4

What Is the Effect of Torque on Pulley Systems with Friction?

bluebear19
Nov 14, 2008 · Replies 18 · Nov 17, 2008

Replies: 18

Simple Harmonic Motion-Period of oscillations

vrobins1
Nov 17, 2008 · Replies 1 · Nov 17, 2008

Replies: 1

Two object collision question impossible

mrjoe2
Nov 17, 2008 · Replies 4 · Nov 17, 2008

Replies: 4

Newton's First Law & Constant Velocity Car

alpha372
Nov 16, 2008 · Replies 19 · Nov 17, 2008

Replies: 19

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Intro Physics Homework Help

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