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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Physics help- unsure where I went wrong

  • cpat
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3

Find the speed of the block as it passed through O

  • emma-sky
  • · Replies 3 ·
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3
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21

A Couple Exam Review Questions

  • Mzachman
  • · Replies 6 ·
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6

Cuttoff frequwncy for an x-ray tube

  • ladiebug511
  • · Replies 2 ·
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2

Calculating resistance from cross-section

  • valarking
  • · Replies 13 ·
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13

Optics - Apparent Change in Position due to Media

  • king vitamin
  • · Replies 1 ·
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1

How Do You Calculate the Orbital Speed and Period of a Satellite?

  • wowdusk
  • · Replies 3 ·
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3

What is the elastic modulus of the wire?

  • joseg707
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4

Finding potential at a specific point in the circuit Help

  • koab1mjr
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3

Photoelectric effect and mercury

  • stickplot
  • · Replies 5 ·
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5

Total Time Travelled for 400m by Bus

  • phynaive
  • · Replies 6 ·
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6

Violin Harmonics HW: Finding Lowest Frequency Oscillation

  • mathilin
  • · Replies 6 ·
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6

How Do You Calculate Net Forces in Coulomb's Law Problems?

  • StephenDoty
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2

Calculating Impulse and Work on a Bullet

  • Spaniard
  • · Replies 7 ·
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7

Circuit with an uncharged capacitor - desperate

  • erinec
  • · Replies 3 ·
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3

Conservation of momentum between a moving ball and a stationary ball?

  • chrisf44
  • · Replies 1 ·
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1

2 Impulse and Momentum related Questions

  • zn23
  • · Replies 5 ·
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5

Force of nail after being struck by a hammer

  • unteng10
  • · Replies 3 ·
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3

Sound Power Intensity: Double Distance Effects

  • matt_li
  • · Replies 1 ·
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1

Equal Forces of Attraction and Repulsion for Like Charges in Coulomb's Law?

  • Procrastinate
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2

Find the value of the emf in a battery

  • rayhan619
  • · Replies 6 ·
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6

How Does the Weight of Stainless Steel Change in Sea Water?

  • TorMcOst
  • · Replies 8 ·
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8

Projectile Motion on a sloped surface

  • Doonami
  • · Replies 3 ·
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3

Hole Punched in the Side of Container

  • science.girl
  • · Replies 20 ·
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20

Calculating Retained Potential Energy of a Bouncing Ball | Homework Help

  • NineTHOUSAND
  • · Replies 2 ·
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2

Angle Calculation for Equilateral Prism

  • shimizua
  • · Replies 3 ·
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3

What is the Velocity of a 2-Wheeled Vehicle with Weight on Top?

  • henry1117
  • · Replies 12 ·
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12

Beta Decay not a specific problem, just a question

  • erinec
  • · Replies 1 ·
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1

Physics Word Problem; Projectile Motion

  • georgiaa
  • · Replies 3 ·
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3

Greatest acceleration of the mass

  • J89
  • · Replies 1 ·
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1

Calculate Water Depth Using Sonar | Speed of Sound = 5300 km/h

  • dlre
  • · Replies 10 ·
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10

How Long After a Crash Does Sound Reach Different Observers?

  • dlre
  • · Replies 3 ·
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3

Power Developed for Conveyor Belt Transporting Newspapers

  • Lothar
  • · Replies 1 ·
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1

Solve Wave Movement Homework: Speed, Wavelength & Period

  • bnwchbammer
  • · Replies 2 ·
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2

Physics Lab - Measurement of Absolute Zero?

  • minidee
  • · Replies 4 ·
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4

Physics Lab - Mechanical equivalent of heat

  • minidee
  • · Replies 1 ·
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1

Can the Defendant Throw the Money Bag Under 5 m/s?

  • georgiaa
  • · Replies 1 ·
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1

Calculating Forces and Friction in Motion: A Cake on a Bus

  • ILC grade 11
  • · Replies 5 ·
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5

Find the current through and the potential difference of resistor

  • rayhan619
  • · Replies 8 ·
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8

Calculating volume from adiabatic operation

  • mister_tom
  • · Replies 5 ·
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5

What Is the Angle of Incline for a Sphere Rolling Without Slipping?

  • hejo
  • · Replies 3 ·
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3

Creating a Shock-Absorbing Design for an Egg Drop

  • Crazyhooligin
  • · Replies 5 ·
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5

Index of refraction for violet light

  • itryphysics
  • · Replies 2 ·
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2

A fixed cannon is to fire a projectile at a tank

  • esmmajor
  • · Replies 1 ·
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1

Linear momentum and its Conservation

  • aaronb
  • · Replies 1 ·
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1

Energy stored in capacitance of a squid

  • rayhan619
  • · Replies 6 ·
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6

How Fast Does the Collar Travel Before Hitting Stop B?

  • joemama69
  • · Replies 19 ·
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19

Determine how long puck takes to cross ice

  • j1249
  • · Replies 12 ·
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12

How to slow down the charge & discharge process in RC battery

  • Ikaa
  • · Replies 2 ·
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2

How Much Gas Must a Space Probe Expel to Alter Its Course by 30 Degrees?

  • HGM2112
  • · Replies 20 ·
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20

Help with right or wrong question in simple harmonic motion

  • madah12
  • · Replies 7 ·
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7

How is density linked to mass and mols?

  • JosephF
  • · Replies 6 ·
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6

Simple harmonic motion velocity and acceleration

  • alexandertg6
  • · Replies 3 ·
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3

Fixing Light Issues in CD Readers

  • nokia8650
  • · Replies 2 ·
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2

Electromagnetic Induction (Flux linkage)

  • JosephF
  • · Replies 4 ·
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4

Period of Orbit Homework: Calculating Satellite Revolution Time

  • Oijl
  • · Replies 5 ·
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5

How Do You Calculate Power Loss in High-Voltage Transmission Lines?

  • mlsohani
  • · Replies 3 ·
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3

Gravitation (Potential Energy)

  • Oijl
  • · Replies 4 ·
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4

Capacitor Connections and Charge Conservation

  • ursulan
  • · Replies 2 ·
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2

How Do I Build a Logic Gate for a Voting System?

  • JosephF
  • · Replies 3 ·
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3
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2

Is current measured in Watts or kW?

  • JosephF
  • · Replies 6 ·
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6
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1

Lab report questions, gas thermometer

  • fluidistic
  • · Replies 3 ·
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3

Doppler Shift for Traffic Light Colors

  • Cheezay
  • · Replies 5 ·
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5

Neutron, minimum potential energy, heisenberg uncertainty

  • Yroyathon
  • · Replies 4 ·
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4

Lorentz force on current-carrying wire

  • quasarpulse
  • · Replies 1 ·
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1

Diffraction gratings and intensity

  • Deneb Cyg
  • · Replies 2 ·
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2

Calculating Tensions in a Suspended Box with Two Ropes

  • riot13
  • · Replies 5 ·
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5

Find n from PV^n=C | Get Help with Math Homework

  • Gorz
  • · Replies 10 ·
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10

Calculating the Distance Traveled by an Object Up an Incline

  • tigerengineer
  • · Replies 4 ·
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4

Solve a Particle's Velocity Given Acceleration: Calculus Task

  • vs55
  • · Replies 6 ·
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6

Rotational Inertia of Pulley, Integration Help

  • rmunoz
  • · Replies 2 ·
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2

HELP PLESE Simple Harmonic Motion

  • blazeuofa
  • · Replies 2 ·
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2

Generalized coordinates of a couple harmonic oscillator

  • phagist_
  • · Replies 5 ·
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5

Calculating Energy Dissipation in an RC Circuit

  • ursulan
  • · Replies 2 ·
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2

Magnetic Dipole Moment of a Coil

  • jumbogala
  • · Replies 8 ·
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8

Potential difference in capacitor help

  • rayhan619
  • · Replies 7 ·
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7

Solving Projectile Motion Equation for Distance

  • roldy
  • · Replies 3 ·
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3

Calculating Object Distance from Lens with Magnification and Focal Length

  • hardwork
  • · Replies 2 ·
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2

How can you use an ammeter to measure a voltage of 5.0 V?

  • rayhan619
  • · Replies 4 ·
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4

Weight on a Hypothetical Planet

  • raptik
  • · Replies 5 ·
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5

Finding the field strength of an EF

  • Watsonb2
  • · Replies 1 ·
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1
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6

Potential from a ring of charge

  • -EquinoX-
  • · Replies 3 ·
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3

What are the allowed radii and energy levels in the Bohr model?

  • guitarguy1
  • · Replies 4 ·
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4

Solving Block on Incline w/ Magnetic Force

  • davidmigl
  • · Replies 2 ·
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2

Power question involving sprinter

  • angotta
  • · Replies 2 ·
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2

Principal quantum number n, large ones for hydrogen

  • Yroyathon
  • · Replies 1 ·
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1

Calculating Angle of Refraction Using Snell's Law

  • hardwork
  • · Replies 5 ·
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5

Conservation of Momentum, Everygy, Etc

  • tigerengineer
  • · Replies 6 ·
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6

How Fast Do Electrons Move in a Copper Wire?

  • XodoX
  • · Replies 1 ·
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1

Force of Earth's magnetic field acting on a power line?

  • ted182
  • · Replies 1 ·
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1

Unpolarized Light Intensity problem

  • hardwork
  • · Replies 3 ·
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3

Torque on a small loop by a large loop?

  • zyphriss2
  • · Replies 1 ·
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1

Magnitude and Direction of Magnetic Field

  • hardwork
  • · Replies 3 ·
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3

How Far Can a Man Walk on a Plank Before It Tips Over?

  • einstein18
  • · Replies 1 ·
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1
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8

Experiment for middle school with Uniform Acceleration

  • Alexi
  • · Replies 2 ·
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2