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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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"Lowest Child B: Why Dropping Rocks is Best Choice

jeremy smith
Dec 1, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

Movement of an electron between two plates

asi123
Dec 1, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

Determine the linear acceleration of the tip of the rod

shimizua
Dec 1, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

Calculating Mass of 1 Cubic Meter of Water in Kilograms

shimizua
Dec 1, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

Solving Rational Expressions and Complex Fractions - Help and Tips

elie_girl
Nov 29, 2008 · Replies 2 · Dec 1, 2008

Replies: 2

Inclined slope with acceleration

devanlevin
Nov 28, 2008 · Replies 20 · Dec 1, 2008

Replies: 20

What Experiments Can Help You Understand Gyroscope Behavior?

starlet
Nov 28, 2008 · Replies 5 · Dec 1, 2008

Replies: 5

Conceptual Rotational Motion and angular velocity

JPhillips
Nov 30, 2008 · Replies 9 · Dec 1, 2008

Replies: 9

Length of the box based on the fringe pattern? I think I'm close.

spaghed87
Nov 30, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

Calculating a Planetary Year for Krau?

omgitsmonica
Nov 29, 2008 · Replies 4 · Dec 1, 2008

Replies: 4

Detecting Mass Changes with a Hydraulic Balance

tacoman326
Nov 29, 2008 · Replies 5 · Dec 1, 2008

Replies: 5

Did I do this fluids problem right? A find the gallons/min gushed by a fountain

lalalah
Nov 30, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

Equilibrium Temperature and composition

RedBarchetta
Dec 1, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

How Do You Calculate Work on a pV Diagram When Pressure Varies?

doggieslover
Nov 30, 2008 · Replies 7 · Dec 1, 2008

Replies: 7

Refraction index vs. wavelength?

jaejoon89
Dec 1, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

Momentum Problem: Final Momenta, Kinetic Energies Compared

Maiia
Nov 30, 2008 · Replies 3 · Dec 1, 2008

Replies: 3

Syringe: probably a really simple mistake that I can't seem to catch

bellekirst23
Dec 1, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

Air Balloon ( 5.5 inch diameter) vs Helium gas balloon ( 11 inch diameter )?

redhot209
Nov 30, 2008 · Replies 1 · Dec 1, 2008

Replies: 1

A problem involving dark fringes & light wave & interference.

erinec
Nov 30, 2008 · Replies 4 · Dec 1, 2008

Replies: 4

Isobaric, Isochoric, Isothermal, and Adiabatic Processes

doggieslover
Nov 30, 2008 · Replies 2 · Dec 1, 2008

Replies: 2

Solve 870 kg Sports Car Collision Speed at Impact

sumitmanhas
Nov 30, 2008 · Replies 3 · Dec 1, 2008

Replies: 3

Propeller Rotation Problem - Please check

JWDavid
Nov 30, 2008 · Replies 3 · Dec 1, 2008

Replies: 3

Determining pressure in the pot.

Micko
Nov 30, 2008 · Replies 4 · Nov 30, 2008

Replies: 4

Finding Velocity Using Work-Energy Principle

Bones
Nov 30, 2008 · Replies 5 · Nov 30, 2008

Replies: 5

Moment of Inertia: Problem 8 Homework Solutions

jimbo71
Nov 29, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

Deviations from the Ideal Gas Equation

doggieslover
Nov 30, 2008 · Replies 2 · Nov 30, 2008

Replies: 2

String Vibrations: Determine Wavelength & Fundamental Frequency

Husker70
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

How Does Radioactive Decay Affect Isotope Ratios Over Time?

Sublime74
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

Calculating Age of Old Sample with Carbon 14 Dating

Sublime74
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

How Much Acceleration Is Needed to Prevent a Fishing Line from Breaking?

liz777
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

Find frictional force from mass and acceleration

liz777
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

Energy required to accelerate a mass

Stellar1
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

Electric Field Zero Points: Square Arrangement of Charges | Homework Question

bap902
Nov 30, 2008 · Replies 3 · Nov 30, 2008

Replies: 3

How long does it take for the 4.0 kg block to reach the floor?

booboo21407
Nov 30, 2008 · Replies 8 · Nov 30, 2008

Replies: 8

Calculating the Starting Angle of a Pendulum Using Geometry and Trigonometry

ptdreamer
Nov 30, 2008 · Replies 3 · Nov 30, 2008

Replies: 3

Phase Difference: Calculate using 246Hz & 343 m/s

Husker70
Nov 30, 2008 · Replies 21 · Nov 30, 2008

Replies: 21

Frequency of Harmonic Oscillators on Earth and the Moon

Naldo6
Nov 30, 2008 · Replies 9 · Nov 30, 2008

Replies: 9

How Do Phase Shifts Affect Resultant Wave Amplitude and Frequency?

Husker70
Nov 29, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

What is the acceleration of a toy car rolling down a ramp at a 20 degree angle?

fk378
Nov 30, 2008 · Replies 3 · Nov 30, 2008

Replies: 3

Bernoulli's Principle: How Does Water Flow in a Tower with Multiple Holes?

bmandrade
Nov 30, 2008 · Replies 3 · Nov 30, 2008

Replies: 3

Calculating U-235 Requirements for a 707 MW Nuclear Fission Reactor

haxxorboi
Nov 30, 2008 · Replies 3 · Nov 30, 2008

Replies: 3

What is the acceleration of a cylindrical shell rolling down an inclined plane?

Amlung
Nov 30, 2008 · Replies 3 · Nov 30, 2008

Replies: 3

How can I calculate the electric field using the voltage and gradient?

abcdefg10645
Nov 29, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

What Is the Impulse Given to a Ball by the Floor in a Bounce?

Mikejax
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

First Law of Thermodynamics Question

bap902
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

What Is the Average Acceleration of a Bird Flying from Point A to B?

lanvin
Nov 29, 2008 · Replies 11 · Nov 30, 2008

Replies: 11

Solving Rotation Homework: Answers & Explanations

physicalerror
Nov 29, 2008 · Replies 3 · Nov 30, 2008

Replies: 3

Doppler effect and frequency of the horn

Naldo6
Nov 30, 2008 · Replies 15 · Nov 30, 2008

Replies: 15

Solving Problem 9: Smaller than Any of the Choices?

jimbo71
Nov 29, 2008 · Replies 6 · Nov 30, 2008

Replies: 6

What Are the Effects of Rigid Body Force and Torque?

jimbo71
Nov 29, 2008 · Replies 6 · Nov 30, 2008

Replies: 6

Light Interference Webassign question

nickredsox
Nov 29, 2008 · Replies 6 · Nov 30, 2008

Replies: 6

Where Should You Place a Pump to Extract Water from a Deep Mine?

TFM
Nov 28, 2008 · Replies 14 · Nov 30, 2008

Replies: 14

Significance of spring mass in SHM.

hjalte
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

Practical - Stress-Strain graph of an elastic band

JanineSamson
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

Solve Static Torque Problem: 5m Beam, 80N & 180N Load, 100N Force

phys1618
Nov 29, 2008 · Replies 4 · Nov 30, 2008

Replies: 4

Solving Simple Fluid Problems: Bernoulli's Equation

Machodog
Nov 29, 2008 · Replies 3 · Nov 30, 2008

Replies: 3

.Achieving a Successful Rocket Lab in Physics Class

CARTERfails
Oct 27, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

What Are the Correct Units for p in the Equation R=pl/A?

phyuk2
Nov 30, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

Newton's Cradle: Explaining 2-Ball vs. 1-Ball Dynamics

foyer
Nov 29, 2008 · Replies 1 · Nov 30, 2008

Replies: 1

Conceptual question about internal energy

jdstokes
Nov 30, 2008 · Replies 4 · Nov 30, 2008

Replies: 4

Calculating Current in a Direct Current Circuit with Kirchhoff's Rules

Mister V
Nov 29, 2008 · Replies 6 · Nov 30, 2008

Replies: 6

Solving for Acceleration and Friction in Rolling Motion

iitjee10
Nov 30, 2008 · Replies 2 · Nov 30, 2008

Replies: 2

Electrostatics Multiple Choice Questions

bap902
Nov 28, 2008 · Replies 4 · Nov 30, 2008

Replies: 4

Maximum speed of a string help

Naldo6
Nov 29, 2008 · Replies 10 · Nov 30, 2008

Replies: 10

How Does the Law of Conservation of Momentum Apply in a Firework Explosion?

sumitmanhas
Nov 29, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

Solving Force Due to Gravity Homework Problem

jimbo71
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

Calculate the Density of a Block Floating in Olive Oil

Naldo6
Nov 28, 2008 · Replies 6 · Nov 29, 2008

Replies: 6

Calculating Weight and Sliding Force on a Roof | Statics Problem Solution

phys1618
Nov 29, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

How Do You Calculate the Density of LiCl in a Face-Centered Cubic Structure?

roeb
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

How to Convert Mass and Weight on Earth to Mass and Weight on the Moon?

Dandy Candy
Nov 29, 2008 · Replies 4 · Nov 29, 2008

Replies: 4

Equilibrium - Flagpole vs Rope Tension

Shambles
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

Temperature Variation Coefficient

Pochon
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

Does Rotational Kinetic Energy Differ for Objects Like Fans in the Air?

kmikias
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

What is the Volume of the Floating Object?

Naldo6
Nov 28, 2008 · Replies 13 · Nov 29, 2008

Replies: 13

Fluid Physics; Finding the Density of an Unknown Liquid

Jinthe1st
Nov 29, 2008 · Replies 3 · Nov 29, 2008

Replies: 3

The Rotational Kinetic Energy of the Earth

soupastupid
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

Find the magnitude of acceleration of the puck on the ramp

ScullyX51
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

Find the acceleration in terms of friction

ScullyX51
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

What is the Maximum Energy and Velocity in Spring Oscillation?

Naldo6
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

How Much Air Must a Fish's Bladder Contain to Achieve Neutral Buoyancy?

Physicsdude13
Nov 29, 2008 · Replies 3 · Nov 29, 2008

Replies: 3

Potential energy and a pendulum

Mikejax
Nov 29, 2008 · Replies 10 · Nov 29, 2008

Replies: 10

How do momentum, impulse, and GPE factor into solving physics questions?

ballaholic8
Nov 29, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

Determining Impending Motion with Coefficients of Friction

jaredmt
Nov 29, 2008 · Replies 4 · Nov 29, 2008

Replies: 4

Is Calculating 69g's as 676.89 m/s² Correct?

Oblivion77
Nov 29, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

IS tis corresct about Amplitud, frquency, Period, & Energy

Naldo6
Nov 29, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

What is the tension in the string at the top of the ball's path?

Toxage
Nov 29, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

Simple Harmonic Motion - Finding max speed of an oscillator

KEØM
Nov 29, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

What Height Must the Granite Cube Start From to Propel a Steel Cube to 150 cm/s?

mrjoe2
Nov 28, 2008 · Replies 6 · Nov 29, 2008

Replies: 6

Calculate Spring Constant: 58.7N & 88.1N Weights

Naldo6
Nov 28, 2008 · Replies 11 · Nov 29, 2008

Replies: 11

Solved: Spinning Situation: What Happens to the Merry-Go-Round?

soupastupid
Nov 28, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

Solving Static Problem: Help Needed

phys1618
Nov 28, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

Calculating the time of stopping distance

chaz699
Nov 29, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

Terminal velocity when falling through the atmosphere

JimT
Nov 29, 2008 · Replies 2 · Nov 29, 2008

Replies: 2

Angular Velo, Tangential Acceleration

agross
Nov 28, 2008 · Replies 3 · Nov 29, 2008

Replies: 3

Conservation of linear momentum of rocket

mbisCool
Nov 29, 2008 · Replies 7 · Nov 29, 2008

Replies: 7

Please check my Answer to Free Fall Question

cbrowne
Nov 28, 2008 · Replies 1 · Nov 29, 2008

Replies: 1

How Do You Calculate Frictional Force on an Inclined Plane?

junior20
Nov 28, 2008 · Replies 6 · Nov 29, 2008

Replies: 6

Calculating Ground State Energy for Triple Ionized Beryllium

PeterWarrick9
Nov 28, 2008 · Replies 3 · Nov 28, 2008

Replies: 3

Collision of Alpha particle with a Gold Nucleous

lebprince
Nov 28, 2008 · Replies 1 · Nov 28, 2008

Replies: 1

Projectile Motion Problem - Solving for Maximum Height and Landing Distance

Melawrghk
Nov 28, 2008 · Replies 2 · Nov 28, 2008

Replies: 2

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Intro Physics Homework Help

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