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

Vector Addition - Find Angle of Resultant Force

  • razored
  • · Replies 5 ·
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5

Calculate the acceleration for a ball bearing

  • NMJ09
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1

Conservation of Energy object of mass

  • Sheneron
  • · Replies 1 ·
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1

How Is the Period of a Satellite Calculated?

  • KDizzle
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1

Potential Change in a Circuit Diagram

  • daimoku
  • · Replies 1 ·
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1

Solved: R Vectors in Different Drawings Same Magnitude?

  • razored
  • · Replies 3 ·
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3

How Did a Supernova Influence the Unique Composition of a Solar System?

  • scatterbrain8
  • · Replies 1 ·
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1

When Does the Package Reach the Ground?

  • sprinter08
  • · Replies 2 ·
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2

What is the angular velocity of the sun?

  • bse
  • · Replies 2 ·
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2

Expression for the force on a particle

  • Nightrider55
  • · Replies 4 ·
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4

Solving Spinning Animals Problem with Negligible Mass and Length

  • rsala
  • · Replies 1 ·
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1

How Is Velocity Calculated in a Compound Ballistic Pendulum Experiment?

  • Izbitzer
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1

How Does Elevator Acceleration Affect Object Weight?

  • joelio36
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1
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4

Differences in kinetic friction coefficents

  • jmcmillian
  • · Replies 3 ·
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3
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2

Solving an Elevator Power Problem: Find the Average Power in kW

  • BitterSuites
  • · Replies 7 ·
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7

How Does Friction Affect Work Done on an Incline?

  • BitterSuites
  • · Replies 1 ·
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1

How Many Revolutions Does the Smaller Disk Make Around the Larger Circle?

  • pchalla90
  • · Replies 6 ·
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6

Solve Gauss' Law for Electric Field - Help Here!

  • Saladsamurai
  • · Replies 7 ·
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7

Angular acceleration of a Propeller

  • clope023
  • · Replies 3 ·
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3
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2

How Does the Direction of a Magnetic Field Affect Induced EMF in a Loop?

  • Vanessa23
  • · Replies 2 ·
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2

Understanding the Solution to an AP Physics C Exam Problem

  • keydetpiper
  • · Replies 2 ·
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2

Why Does Hot Water Freeze Faster Than Cold Water?

  • Unredeemed
  • · Replies 1 ·
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1

Work and kinetic energy of two blocks

  • msattar07
  • · Replies 3 ·
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3

Number of Forces Doing Work on Box on Incline

  • msattar07
  • · Replies 3 ·
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3

Calculating Solar Energy Needed for $1000 Worth of Electricity

  • tkkid12
  • · Replies 4 ·
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4

Finding Mass and Speed in Kinetic Energy Problems

  • destro47
  • · Replies 6 ·
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6

Calculate Acceleration of 6.90 kg Mass with F1 & F2 Vectors

  • mischaoc
  • · Replies 7 ·
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7

The Doppler Shift - is this right?

  • Shiina-kun
  • · Replies 1 ·
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1

Working with two moving targets ?

  • maca_404
  • · Replies 2 ·
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2

Calculating the Final Height of Chris's Bungee Jump

  • gillyr2
  • · Replies 5 ·
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5
  • Poll Poll

Gravitational force = 0 between two planets?

  • Hayden_
  • · Replies 2 ·
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2
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3

Index of refraction, calculate frequency. ~ stuck at 2 unknown variables

  • bobbo7410
  • · Replies 3 ·
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3

Boat light distance when it strikes bottom.

  • rcmango
  • · Replies 3 ·
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3

Solving for Sound Intensity: How Far Away is 75 dB? [SOLVED]

  • Shiina-kun
  • · Replies 7 ·
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7

Percent uncertainty of momentum

  • dangsy
  • · Replies 2 ·
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2

Angular Acceleration during Bowling

  • Eggyu
  • · Replies 1 ·
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1

Solve Two Electric Field and Capacitor Problems with Homework Help!"

  • gonzalo12345
  • · Replies 1 ·
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1

Capacitor Circuits: Battery Removal Effects

  • Gear300
  • · Replies 2 ·
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2

Vertical Kinematics: Solving for Jump Time

  • sprinter08
  • · Replies 7 ·
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7

Magnetic Field due to a current loop

  • snoweangel27
  • · Replies 4 ·
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4

Want to know correct answer for electric field + potential question

  • altegron
  • · Replies 4 ·
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4

What is the Total Outward Force Exerted on a Pool's Vertical Wall?

  • Clark Smith
  • · Replies 1 ·
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1

Nitrogen Gas Molecule Speeds and Temperature Relationship

  • weathercheck
  • · Replies 5 ·
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5

Solving Static Friction: 3 kg Block & 99 N/m Spring

  • glasshut137
  • · Replies 1 ·
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1

Thermodynamics and ice melting.

  • Terp
  • · Replies 2 ·
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2

Acceleration of a block on the floor

  • iamkristing
  • · Replies 2 ·
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2

What Is the Maximum Weight a Flowerpot Can Be Supported By Two Cables?

  • myoplex11
  • · Replies 2 ·
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2
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1

How Can I Effectively Learn Physics on My Own as a High School Student?

  • iBankingFTW
  • · Replies 17 ·
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17

Solution for Elastic Collision of Three Identical Billiard Balls

  • xaer04
  • · Replies 4 ·
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4

How Do You Calculate Power Dissipation in a Double Loop Circuit?

  • j_baby
  • · Replies 1 ·
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1

Standing broad jump on the moon

  • nemesis08
  • · Replies 2 ·
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2

Ski Ramp Physics: Find Initial Velocity & Injuries

  • MarkGhent
  • · Replies 1 ·
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1

Momentum and kinetic energy questions

  • celee2
  • · Replies 1 ·
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1

Calculating % Change in Inductance of Search Coil in Metal Detector

  • arod2812
  • · Replies 1 ·
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1

Angle refraction from a point on glass.

  • rcmango
  • · Replies 1 ·
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1

Calculating Clay's Acceleration: 12.0 m Fall

  • lgen0290
  • · Replies 1 ·
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1

Silly question about Cross-Product

  • Saladsamurai
  • · Replies 1 ·
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1

Percentage of kinetic energy after an elastic collision

  • clope023
  • · Replies 3 ·
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3

Pendulum Problem: Find Min Release Angle to Clear Peg

  • dkoppes
  • · Replies 11 ·
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11

Centripetal Acceleration Part II

  • BitterSuites
  • · Replies 2 ·
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2

Weight in Terms of Distance From Earth

  • bfr
  • · Replies 3 ·
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3

What Is the Correct Calculation for Satellite Speed in a Stable Orbit?

  • BitterSuites
  • · Replies 12 ·
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12

Open ended pipe Harmonics Mastering Physics Question

  • TFM
  • · Replies 9 ·
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9
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14

Changing axis of a rotating wheel

  • degn
  • · Replies 1 ·
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1
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1

How to Find a Unit Vector in the Direction of a Given Vector

  • chocolatelover
  • · Replies 8 ·
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8

[Paper and presentation] Mechanics in Computer

  • master cherundo
  • · Replies 2 ·
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2

Oh really? potential difference sucks

  • smd1991
  • · Replies 1 ·
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1

Solve Spring SHM Problem: Period of Oscillation in M1, M2, k

  • brendan3eb
  • · Replies 1 ·
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1

Elastic collision, one dimension

  • nightshade123
  • · Replies 7 ·
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7

Solve Proton Bombardment Homework: Find Vf in m/s

  • kontroll2007
  • · Replies 1 ·
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1

Redo Physics Exam Qs: Find Acceleration & Direction

  • charitysmama
  • · Replies 6 ·
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6

What is the surface charge density sigma?

  • dgoudie
  • · Replies 1 ·
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1

Static electricity and electrons

  • fonzi
  • · Replies 20 ·
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20

Solving Collision Problem: 10g & 15g Objects Moving in Opposite Directions

  • the7joker7
  • · Replies 5 ·
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5

Using Newton's Second Law for a System of Particles

  • blue5t1053
  • · Replies 6 ·
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6

Pendulum problem-last answer was wrong please

  • bharp24
  • · Replies 2 ·
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2

Current, Voltage Really Easy Question

  • xxkbxx
  • · Replies 3 ·
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3

More frustrating force problems,

  • chimez14
  • · Replies 1 ·
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1

Why does the heavier car stop sooner?

  • scooby07
  • · Replies 4 ·
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4

Oh jesus. potential difference problems help per favore

  • smd1991
  • · Replies 1 ·
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1

Difficult problems, im frustrated

  • chimez14
  • · Replies 1 ·
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1

How Long Until the Train Stops Moving Up the Inclined Track?

  • chimez14
  • · Replies 1 ·
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1

Need help finding distance of skier going down a hill Help

  • Mocambo
  • · Replies 6 ·
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6

Find the total work done on 20.0N block

  • bharp24
  • · Replies 4 ·
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4
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3

Calculating displacement on a v-t graph?

  • aaquib
  • · Replies 6 ·
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6

Electrostatics, ONE TEENSY little problemo please HELPPPPP thanks

  • physicsbhelp
  • · Replies 22 ·
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22

Determine acceleration when velocity is v=x^3-4x^2+7x

  • kring_c14
  • · Replies 4 ·
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4

Velocity as a function of force/impulse/time.

  • the7joker7
  • · Replies 2 ·
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2

Dielectric Capacitance of Parallel Plate Cap

  • jesuslovesu
  • · Replies 3 ·
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3

Melting Ice Cube: Time Needed for 3-Ton Ice Cube with Golden Bars

  • baky0905
  • · Replies 2 ·
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2

Solving for Initial Velocity: When Angles, Distances are Given

  • princesspriya
  • · Replies 2 ·
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2

How Does Wind Affect the Flight Time of a Plane on a Square Route?

  • checkmarks
  • · Replies 1 ·
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1