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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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Find the Focal Length Of a lens

AyooNisto
Apr 30, 2013 · Replies 15 · May 1, 2013

Replies: 15

Slowest particle for decreasing acceleration

FelidaeTrick
Apr 30, 2013 · Replies 12 · May 1, 2013

Replies: 12

Intensity of sound wave & energy passes into ear

coconut62
Apr 30, 2013 · Replies 2 · May 1, 2013

Replies: 2

What is the potential difference in parallel plates?

x86
Apr 30, 2013 · Replies 1 · May 1, 2013

Replies: 1

Ball rotating on axle which is rotating itself

NathanLeduc1
May 1, 2013 · Replies 4 · May 1, 2013

Replies: 4

How Does Rotational Momentum Apply in a Combined Linear and Angular System?

freshcoast
Apr 29, 2013 · Replies 9 · May 1, 2013

Replies: 9

Starship special relativity problem

JamesGold
Apr 30, 2013 · Replies 3 · May 1, 2013

Replies: 3

The question is: What are the limits for theta and is the working correct?

Saitama
Apr 29, 2013 · Replies 9 · May 1, 2013

Replies: 9

Barometer of Mercury: Weight or Pressure?

adjacent
Apr 22, 2013 · Replies 8 · May 1, 2013

Replies: 8

Newton law's - Finding acceleration

Saitama
Apr 28, 2013 · Replies 40 · May 1, 2013

2

Replies: 40

How High Can a Nuclear Bomb Energy Lift a Mass of Water?

MarcL
May 1, 2013 · Replies 6 · May 1, 2013

Replies: 6

Photon of intermediary energy - Spontaneous Emission

jaumzaum
Apr 29, 2013 · Replies 5 · May 1, 2013

Replies: 5

Solving Solid Disk Rolling Up Incline: Find Height h

NathanLeduc1
Apr 30, 2013 · Replies 4 · May 1, 2013

Replies: 4

Phyiscs- Beats and frequency problem

CivilSigma
Apr 29, 2013 · Replies 6 · Apr 30, 2013

Replies: 6

Heat energy in a mixture to get final temperature

johns123
Apr 30, 2013 · Replies 2 · Apr 30, 2013

Replies: 2

Electricity problem, is high potential at

x86
Apr 30, 2013 · Replies 9 · Apr 30, 2013

Replies: 9

What is the correct thickness of the foil based on the observed dark lines?

AyooNisto
Apr 30, 2013 · Replies 4 · Apr 30, 2013

Replies: 4

Is Momentum Conserved in Both Axes During a Projectile Explosion?

Toranc3
Apr 30, 2013 · Replies 4 · Apr 30, 2013

Replies: 4

What is the gravitational acceleration on the surface of Moon B?

Yosty22
Apr 30, 2013 · Replies 1 · Apr 30, 2013

Replies: 1

Show that it is a energy eigenstate and find the corresponding energy

Denver Dang
Apr 29, 2013 · Replies 2 · Apr 30, 2013

Replies: 2

Help finding the spring constant in a magnetic field

enforcer53
Apr 29, 2013 · Replies 8 · Apr 30, 2013

Replies: 8

Collisional excitation minimum velocity

torchflame
Apr 27, 2013 · Replies 4 · Apr 30, 2013

Replies: 4

How do I solve for the angle in Newton's Second Law problem with two unknowns?

Clever_name
Apr 14, 2013 · Replies 19 · Apr 30, 2013

Replies: 19

Cubic and Linear Thermal Expansion.

SherlockOhms
Apr 29, 2013 · Replies 5 · Apr 30, 2013

Replies: 5

Find the Current and potential difference in a parallel/series circuit

Absolutism
Apr 30, 2013 · Replies 3 · Apr 30, 2013

Replies: 3

If you kick a rolling ball perpendicularly, what happens?

Nerkiot
Apr 30, 2013 · Replies 1 · Apr 30, 2013

Replies: 1

Velocity and acceleration algorithm

cupo
Apr 29, 2013 · Replies 1 · Apr 30, 2013

Replies: 1

Speed of a moving laser due to refraction

Erubus
Apr 29, 2013 · Replies 6 · Apr 30, 2013

Replies: 6

Work and energy theorem question

slil
Apr 29, 2013 · Replies 1 · Apr 30, 2013

Replies: 1

Why is the central fringe the brightest in diffraction patterns?

MarcL
Apr 30, 2013 · Replies 1 · Apr 30, 2013

Replies: 1

Find the Mass Moment of Inertia about the x,y,z axes

Northbysouth
Apr 29, 2013 · Replies 7 · Apr 30, 2013

Replies: 7

How Do You Calculate Current in a Complex Circuit?

Majikfreak
Apr 29, 2013 · Replies 1 · Apr 29, 2013

Replies: 1

Image Formed by a System of Lenses

Renaldo
Apr 29, 2013 · Replies 12 · Apr 29, 2013

Replies: 12

How Do You Solve the Steady Temperature Distribution for a Semi-Infinite Plate?

inferno298
Apr 28, 2013 · Replies 1 · Apr 29, 2013

Replies: 1

Calculate the wavelength of an electron for a certain energy

mitochondriaro
Apr 29, 2013 · Replies 1 · Apr 29, 2013

Replies: 1

Knowing Damping and Spring Constant Finding Time

CalebtheCoward
Apr 28, 2013 · Replies 6 · Apr 29, 2013

Replies: 6

Work and energy theorem question

slil
Apr 29, 2013 · Replies 1 · Apr 29, 2013

Replies: 1

What is the Equilibrium of a Uniform Rod with Unknown Weight?

Yosty22
Apr 29, 2013 · Replies 1 · Apr 29, 2013

Replies: 1

Total linear momentum of swinging bat

Juke
Apr 29, 2013 · Replies 8 · Apr 29, 2013

Replies: 8

Can a Highly Charged Rod Strip All Electrons from Aluminum Foil?

davon806
Apr 28, 2013 · Replies 1 · Apr 29, 2013

Replies: 1

Rotational energy and flywheels

goli12
Apr 21, 2013 · Replies 4 · Apr 29, 2013

Replies: 4

Constructive Interference of Sound Waves

cjavier
Apr 29, 2013 · Replies 1 · Apr 29, 2013

Replies: 1

Problem on Galilean transformation

arque
Apr 29, 2013 · Replies 1 · Apr 29, 2013

Replies: 1

Pulleys and Springs Homework Help

Saitama
Apr 24, 2013 · Replies 22 · Apr 29, 2013

Replies: 22

How Does the Particle's Velocity and Potential Shape Affect its Transit Time?

CAF123
Apr 28, 2013 · Replies 16 · Apr 29, 2013

Replies: 16

Monochromatic Light and a Prism

Gee Wiz
Apr 19, 2013 · Replies 15 · Apr 29, 2013

Replies: 15

Finding the temperature change of Earth's surface over 12 hours

leonmate
Apr 27, 2013 · Replies 6 · Apr 29, 2013

Replies: 6

Writing impulse in vector notation

xxascendantxx
Apr 29, 2013 · Replies 2 · Apr 29, 2013

Replies: 2

Question Regarding Impulse and momentum

kashan123999
Apr 27, 2013 · Replies 35 · Apr 29, 2013

2

Replies: 35

Question about origin of wave number K in wave equations

daselocution
Apr 28, 2013 · Replies 2 · Apr 29, 2013

Replies: 2

Minimum Velocity to become airbourne

mouthwash
Apr 28, 2013 · Replies 6 · Apr 29, 2013

Replies: 6

Finding the potential different across an un-parallel plate capacitor

phy00
Apr 27, 2013 · Replies 10 · Apr 29, 2013

Replies: 10

Question about this simple harmonic motion problem

jklops686
Apr 28, 2013 · Replies 7 · Apr 28, 2013

Replies: 7

Find the Maximum Angular Velocity of the Quarter Circle with Energy

Northbysouth
Apr 28, 2013 · Replies 3 · Apr 28, 2013

Replies: 3

Find the induced magnetic current on the inner of two rings

rocapp
Apr 28, 2013 · Replies 1 · Apr 28, 2013

Replies: 1

How Does Angular Acceleration Affect Motion in a Rotational System?

CollegeStudent
Apr 28, 2013 · Replies 9 · Apr 28, 2013

Replies: 9

Determine the Acceleration of point A

Northbysouth
Apr 28, 2013 · Replies 5 · Apr 28, 2013

Replies: 5

Half life Tc-99m injected into a patient

needingtoknow
Apr 28, 2013 · Replies 4 · Apr 28, 2013

Replies: 4

Are electrons constantly orbiting around the nucleus in an atom?

davon806
Apr 28, 2013 · Replies 3 · Apr 28, 2013

Replies: 3

Tensile stress, radius and Young's modulus

Gewitter_05
Apr 28, 2013 · Replies 6 · Apr 28, 2013

Replies: 6

Calculating Direction and Speed Change in a Peregrine Falcon and Raven Collision

Legerity
Apr 28, 2013 · Replies 2 · Apr 28, 2013

Replies: 2

Microwave Optics Lab Experiment - PSU Manual

sindarintech
Apr 28, 2013 · Replies 5 · Apr 28, 2013

Replies: 5

Find the velocity and strength of magnetic field from the given info

rocapp
Apr 28, 2013 · Replies 4 · Apr 28, 2013

Replies: 4

Netwon law's - confused about the forces

Saitama
Apr 28, 2013 · Replies 20 · Apr 28, 2013

Replies: 20

How Does Temperature Change Relate to Work Done by a Gas?

mrcotton
Apr 26, 2013 · Replies 4 · Apr 28, 2013

Replies: 4

Calculate Period & Energy of a Perfect 10kg Pendulum | Quick Question

Abdeln
Apr 28, 2013 · Replies 8 · Apr 28, 2013

Replies: 8

Using displacement, velocity and acceleration oscillation equation?

rockchalk1312
Apr 28, 2013 · Replies 2 · Apr 28, 2013

Replies: 2

Hydrogen atom probability of electron inside nucleus

FatPhysicsBoy
Apr 28, 2013 · Replies 2 · Apr 28, 2013

Replies: 2

Find the Angular Acceleration, acceleration and friction force extered

Northbysouth
Apr 28, 2013 · Replies 1 · Apr 28, 2013

Replies: 1

Clarification on induced current/Bfields for solenoids

aimslin22
Apr 28, 2013 · Replies 2 · Apr 28, 2013

Replies: 2

Steel mass attached to the ceiling, maximum height gain if it is hit

needingtoknow
Apr 28, 2013 · Replies 6 · Apr 28, 2013

Replies: 6

Is this the right way to find Zeq for parallel circuit

pokie_panda
Apr 28, 2013 · Replies 2 · Apr 28, 2013

Replies: 2

Finding the velocity of a standing wave

JRibaudo2813
Apr 27, 2013 · Replies 7 · Apr 28, 2013

Replies: 7

Heat & Melting Ice: Questions & Solutions

tooperoo
Apr 27, 2013 · Replies 2 · Apr 28, 2013

Replies: 2

Electron in one dimensional infinite square well

whynot314
Apr 27, 2013 · Replies 4 · Apr 28, 2013

Replies: 4

Electricity contradiction? Which one is right

x86
Apr 27, 2013 · Replies 6 · Apr 28, 2013

Replies: 6

Calculate the minimum work to extract a body of the water

orlan2r
Apr 23, 2013 · Replies 21 · Apr 28, 2013

Replies: 21

A Dynamics Problem Regarding Friction.

AvocadosNumber
Apr 26, 2013 · Replies 5 · Apr 28, 2013

Replies: 5

Electric field direction with an electron?

x86
Apr 28, 2013 · Replies 2 · Apr 28, 2013

Replies: 2

Static/Kinetic Friction Question. Is my reasoning correct?

Combinatorocks
Apr 28, 2013 · Replies 2 · Apr 28, 2013

Replies: 2

Clarification on induced current/Bfields for solenoids

aimslin22
Apr 28, 2013 · Replies 2 · Apr 28, 2013

Replies: 2

Simple pendulum Help. Dunno Why Im wrong.

e=mcahhhh
Apr 27, 2013 · Replies 3 · Apr 27, 2013

Replies: 3

Electric Potential in electric fields true/false

physninj
Apr 27, 2013 · Replies 6 · Apr 27, 2013

Replies: 6

Statics: Drawing Shear and Moment Diagram

Chandasouk
Apr 27, 2013 · Replies 3 · Apr 27, 2013

Replies: 3

Electrostatics problem: Find charges on the surface of the dielectric

Sunil Simha
Apr 27, 2013 · Replies 3 · Apr 27, 2013

Replies: 3

Calculate mass loss in fission of Uranium-235

xatu
Apr 27, 2013 · Replies 2 · Apr 27, 2013

Replies: 2

Thermal Conduction Homework: Find Rod's Conductivity

Joshb60796
Apr 27, 2013 · Replies 7 · Apr 27, 2013

Replies: 7

Find relative number of H atoms in n=1,2,3,4 energy levels

xatu
Apr 27, 2013 · Replies 2 · Apr 27, 2013

Replies: 2

Graph of Tension force vs. the square of the speed

rstat1
Apr 27, 2013 · Replies 7 · Apr 27, 2013

Replies: 7

Three people are balanced on a uniform seesaw - Torque

Gewitter_05
Apr 27, 2013 · Replies 4 · Apr 27, 2013

Replies: 4

Finding Acceleration of Two blocks connected by a string.

shinify
Apr 27, 2013 · Replies 2 · Apr 27, 2013

Replies: 2

Calculating virtual temperature

Timebomb3750
Apr 27, 2013 · Replies 1 · Apr 27, 2013

Replies: 1

Wave superposition and Doppler effect.

FerN61
Apr 25, 2013 · Replies 3 · Apr 27, 2013

Replies: 3

Two free standing pillars holding beam, moment of inertia problems.

bigandy008
Apr 27, 2013 · Replies 3 · Apr 27, 2013

Replies: 3

Single Slit Diffraction question

carnot cycle
Apr 27, 2013 · Replies 5 · Apr 27, 2013

Replies: 5

Can You Help Me Solve This Static Mechanics Problem?

bostonfenway
Apr 26, 2013 · Replies 7 · Apr 27, 2013

Replies: 7

Length contraction of two spaceships

Saxby
Apr 27, 2013 · Replies 1 · Apr 27, 2013

Replies: 1

Inclined plane (A ball rolling down a slope)

inb4physics
Apr 26, 2013 · Replies 18 · Apr 27, 2013

Replies: 18

Energy required to go from one planet to another

addy899
Apr 26, 2013 · Replies 10 · Apr 27, 2013

Replies: 10

Angular Acceleration vector help

skinnbones
Apr 27, 2013 · Replies 1 · Apr 27, 2013

Replies: 1

Intro Physics Homework Help

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