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

Vaguely defined vector related question

  • FermatPell
  • · Replies 2 ·
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2

How Fast Does an Arrow Travel in Archery?

  • a.d.d92
  • · Replies 10 ·
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10

Calculating Ball Speed and Maximum Height

  • jimmehx3
  • · Replies 2 ·
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2

Finding acceleration and force of pulling

  • Whitishcube
  • · Replies 2 ·
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2

Calculating Volume of a 100kg Mass in Freshwater

  • LoveKnowledge
  • · Replies 1 ·
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1

Permittivity Constant and Coulomb's Law

  • erok81
  • · Replies 1 ·
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1

20N Fapp vs 20N mass on a pulley

  • dunntastic
  • · Replies 7 ·
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7

Motion Near Earth's Surface - grade 11 physics

  • sarmar
  • · Replies 5 ·
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5

Is the Vector Product Really a Vector?

  • golshah
  • · Replies 3 ·
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3

Conservation of Energy: Kinetic to Elastic Potential

  • awelex
  • · Replies 1 ·
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1
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1

Finding Brewster's Angle via Fresnel Equation

  • 876d34f
  • · Replies 2 ·
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2

Designing a Mousetrap Car for Optimal Distance: A Physics Project

  • Garabaldi
  • · Replies 2 ·
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2

A solid non conducting sphere

  • Liquidxlax
  • · Replies 4 ·
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4

Box sliding down a frictionless slope with movable wedge

  • ippo90
  • · Replies 28 ·
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28

To find out forward force of a ship

  • paddygills
  • · Replies 1 ·
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1

Volume question (freshwater, saltwater, mercury)

  • LoveKnowledge
  • · Replies 9 ·
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9

Projectile motion problem: initial velocity calculation

  • UNknown 2010
  • · Replies 10 ·
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10
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1

What is the acceleration of a bullet passing through a board?

  • fiziks09
  • · Replies 3 ·
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3

Trajectory of a cyclist leaving a ramp

  • pb23me
  • · Replies 8 ·
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8

Launch angle convention for downward-directed projectiles

  • mliuzzolino
  • · Replies 9 ·
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9

Gold Cube Density Problem: Calculating Side Length for Double Mass

  • LoveKnowledge
  • · Replies 4 ·
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4

Interacting Systems - Acceleration and Pulleys

  • mantillab
  • · Replies 11 ·
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11

How to Calculate Gravitational Force in a Triangular Configuration?

  • ravennnn
  • · Replies 4 ·
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4

Nonconducting surface uniform charge hole

  • Liquidxlax
  • · Replies 2 ·
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2

Athlete jumps at angle with distance find speed

  • afa
  • · Replies 8 ·
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8

Could an antimatter alien's arrival on Earth cause a global explosion?

  • LoveKnowledge
  • · Replies 4 ·
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4

What Was the Take-Off Speed of the Long Jumper?

  • dmkeddy
  • · Replies 3 ·
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3
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1

How Does a Skier's Energy Change Through Different Stages?

  • katj
  • · Replies 5 ·
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5

Two blocks connected by string passing over a pulley on an incline

  • Tina20
  • · Replies 5 ·
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5

Rotating Rockets Homework: Angular Vel. After 33s

  • Tina20
  • · Replies 6 ·
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6

Find the equation for velocity as a function of time

  • ggb123
  • · Replies 1 ·
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1

Calculating Electron Deflection in a Ballistic Electron Transistor

  • Duncan1382
  • · Replies 1 ·
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1

What is the Correct Wavelength of Light in an Interference Experiment?

  • stphillips
  • · Replies 6 ·
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6

Determine the tension in the coupling

  • navjot
  • · Replies 2 ·
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2

Where does heat loss by conduction and convection occur from boiling water?

  • ProgMetal
  • · Replies 1 ·
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1

Projectile motion maximum range

  • Willian93
  • · Replies 2 ·
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2
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1

Spring-loaded tennis ball cannon for 8m and 12m targets

  • noturn10
  • · Replies 2 ·
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2

How does wind direction affect Earth's rotation time?

  • levaphysics
  • · Replies 3 ·
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3
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3

How Does a Canoe Move When You Walk in It?

  • perfectlovehe
  • · Replies 1 ·
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1

Calculating Voltage Across a Capacitor in a Series Circuit

  • roam
  • · Replies 5 ·
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5

How Do Grating Lines and Wavelength Affect Diffraction Patterns?

  • physicoo
  • · Replies 10 ·
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10

How much work is done by friction during the car's slide down the hill?

  • fatty1
  • · Replies 6 ·
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6

Given Power, Weight, and Vmax find Vmax at angle θ

  • Jack_Straw
  • · Replies 1 ·
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1

What is the total magnetic flux through the plastic of the soda bottle?

  • mnafetsc
  • · Replies 1 ·
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1

Grass Seed and Electric Field Demo

  • erok81
  • · Replies 1 ·
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1

Why do spring force equations differ between coordinate systems?

  • lvslugger36
  • · Replies 3 ·
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3

Velocity vs time and acceleration vs time

  • pb23me
  • · Replies 6 ·
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6

Friction Question: Finding Time and Distance with Kinetic Coefficients

  • car202
  • · Replies 2 ·
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2

Work done by friction on a dragged block

  • pur3geet7
  • · Replies 1 ·
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1

Calculating work done by a spring when stretched

  • vinnyzwrx
  • · Replies 5 ·
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5

Parachutist falling with quadratic drag

  • Jukai
  • · Replies 2 ·
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2
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5

Velocity needed to launch a car

  • NEUhusky
  • · Replies 2 ·
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2

What is the Displacement and Force Acting on a Particle in the xy Plane?

  • vinnyzwrx
  • · Replies 2 ·
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2

Power Requirement for Fire Hose in Urban Areas

  • pinkybear
  • · Replies 1 ·
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1

Failed my physics test

  • longcat93
  • · Replies 3 ·
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3

Time for a raindrop to reach 63% of terminal velocity

  • killazys
  • · Replies 2 ·
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2

Binding Energy given a function?

  • pinkybear
  • · Replies 1 ·
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1

How Many Orbits Does an Electron Make in the Bohr Model?

  • MozAngeles
  • · Replies 1 ·
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1
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1

How Do You Calculate the Velocity of Wreckage After a Head-On Collision?

  • Chica1975
  • · Replies 1 ·
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1

Rotational kinematics of circular saw

  • MozAngeles
  • · Replies 3 ·
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3
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3

OUNT OF HEAT THAT FLOWS DURING THE EXPANSION

  • coffeem
  • · Replies 2 ·
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2

Pulsar Angular acceleration question

  • ja sam glup
  • · Replies 2 ·
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2

On an alternative Stokes theorem

  • curupira
  • · Replies 4 ·
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4

Normal force on 14.8kg box pulled upward by rope

  • rachellehowe
  • · Replies 1 ·
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1

Maximum height reached by 2.40 kg object in pulley system

  • nimboman
  • · Replies 2 ·
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2

Conservation of energy/momentum in a pendulum?

  • mattpd1
  • · Replies 3 ·
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3

How Do Velocity and Motion Principles Apply in Complex Physics Problems?

  • spyroarcher
  • · Replies 3 ·
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3

Chain of mass M with length L (SPhO 2009)

  • mesmeriz3
  • · Replies 1 ·
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1

How to Calculate the Specific Heat Capacity of the Calorimeter?

  • kai92
  • · Replies 3 ·
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3

Does a Falling Object Possess Weight?

  • Astar
  • · Replies 4 ·
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4

Question on gases physics/chemistry

  • GreenPrint
  • · Replies 5 ·
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5
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7

Gas expansion at constant pressure

  • wavingerwin
  • · Replies 5 ·
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5

Centripetal Acceleration Problem

  • perfectlovehe
  • · Replies 2 ·
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2

Finding Position of Object with Initial Velocity and Constant Acceleration

  • moondawg
  • · Replies 1 ·
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1

Projectile motion with horizontal range and angle constraints

  • picklepie159
  • · Replies 5 ·
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5

What Is the Final Velocity of a Car After Descending a Semicircular Track?

  • drizzt56
  • · Replies 1 ·
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1

2 non-rectangular blocks, friction, only gravity

  • trogtothedor
  • · Replies 2 ·
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2

Proving F is Conservative: Steps to Show

  • mopar969
  • · Replies 18 ·
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18

Two charges, individual charge values?

  • xvie
  • · Replies 1 ·
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1

How Far Apart Will the Teddy Bears Land on the Ground?

  • perfectlovehe
  • · Replies 3 ·
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3

How Do You Calculate the Constant Angular Acceleration of a Centrifuge?

  • perfectlovehe
  • · Replies 1 ·
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1

Finding velocity from a distance-time graph with a bent line

  • deaninator
  • · Replies 9 ·
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9

Teddy Bear Falls: Solving a Trajectory Problem

  • perfectlovehe
  • · Replies 1 ·
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1

Calculating Distance Between Copenhagen and Rome on Same Longitude

  • perfectlovehe
  • · Replies 1 ·
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1

Bullet fired into block on table, find initial bullet speed

  • eadel
  • · Replies 2 ·
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2

Circular Motion and String Tension

  • eriadoc
  • · Replies 2 ·
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2

How Do You Calculate Initial Vertical Velocity?

  • jubbly
  • · Replies 6 ·
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6

How to find the forces and balance a lever with a weight on one end?

  • bmk120
  • · Replies 2 ·
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2

Spring Scale Tension Force Problem

  • whoopie88
  • · Replies 1 ·
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1

I think the college board was wrong Maybe I am but I don't see how

  • GreenPrint
  • · Replies 2 ·
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2

Magnetic Field due to Power Lines

  • pssss
  • · Replies 2 ·
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2