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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4

How Are Resultant Vectors Calculated in Croquet Ball Displacements?

  • scottypippen
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1

Will the Magnet Stick to the Car or Fall to the Ground?

  • AirForceOne
  • · Replies 3 ·
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3

Intensity of a Loudspeaker, What's wrong with calculation?

  • Malavin
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1
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5

Centripetal and Tangential Acceleration (Change in Speed over time)

  • kgarcia
  • · Replies 2 ·
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2

Find the magnitude and direction of the net displacement of the player

  • matt@USA
  • · Replies 3 ·
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3

Kinematics problem that i cant seem to resolve

  • adoule
  • · Replies 2 ·
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2

Equilibrium of Four Point Charges in a Square: Calculating Charge Q

  • badd99
  • · Replies 3 ·
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3

Calculating Electric Fields of 3 Charges on a Line

  • thekakaru
  • · Replies 3 ·
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3

Question involving the mathematics of physics and trigonometry

  • kiraahhh
  • · Replies 10 ·
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10

Solving Fluid Static Problem with Parallelepipeds

  • badruk
  • · Replies 1 ·
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1

Point charges acting on a point

  • fal01
  • · Replies 5 ·
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5
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8

Finding the Special Initial Velocity in a kx Force System

  • treynolds147
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2

Finding postion, velocity and accelration as functions of time (SHM)

  • aglo6509
  • · Replies 9 ·
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9

Why isn't weight included in piston force equations?

  • eurekameh
  • · Replies 2 ·
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2

Electric Flux through Cylindrical Surface

  • dcco
  • · Replies 2 ·
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2

Where and when does the car catch the truck?

  • adoule
  • · Replies 7 ·
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7

Relativity Problem: Sweep Laser for v > c on Moon's Surface

  • VitaX
  • · Replies 1 ·
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1

Ideal Gases equilibrium question

  • Sky.Anthony
  • · Replies 2 ·
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2

The electric field due to a point charge

  • Jay9313
  • · Replies 14 ·
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14
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10

Propagation error in finding the perimeter and area, .

  • megkirch
  • · Replies 1 ·
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1

Polar Coordinate Tracking problem

  • AirForceOne
  • · Replies 7 ·
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7

Conservation of linear momentum and kinetic energy

  • knowNothing23
  • · Replies 7 ·
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7

Gravity at an arbitrary location near a disc

  • bumpkin
  • · Replies 4 ·
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4

Magnitude of the average acceleration

  • swan777
  • · Replies 2 ·
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2

How Do You Calculate the Power of a Water Pump?

  • furor celtica
  • · Replies 1 ·
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1

Spring theory, when can this happen? If ever

  • flyingpig
  • · Replies 5 ·
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5
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3

Position of a particle given an equation for acceleration

  • CaYn
  • · Replies 5 ·
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5

Rowboat crossing river with current: finding river speed

  • kiraahhh
  • · Replies 9 ·
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9

Calculating Electric Field of Insulating Sphere

  • Cornfused
  • · Replies 1 ·
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1

Collision Between Two Balls on Strings

  • Megzzy
  • · Replies 7 ·
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7

Calculating if a projectile from Mars will impact Earth.

  • arianabedi
  • · Replies 1 ·
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1

Why a spring-mass assembly is a SHM?

  • jaumzaum
  • · Replies 5 ·
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5

Calculate Max Wavelength of Sound Emitted by Loudspeakers

  • Peter G.
  • · Replies 2 ·
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2

Different initial vertical velocities on different planets

  • gbean
  • · Replies 1 ·
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1

Three Vectors - Resultant vector magnitude?

  • KendrickLamar
  • · Replies 5 ·
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5

Why Did My Projectile Motion Calculation Yield the Incorrect Height?

  • waters
  • · Replies 5 ·
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5

Solve Baseball Pitcher NR's Pitch Time to Home Plate

  • lalahelp
  • · Replies 1 ·
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1
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14

Influenza A virus count from saliva volume

  • lalahelp
  • · Replies 8 ·
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8

What is the Angular Frequency of Two Masses on a Spring?

  • americanforest
  • · Replies 4 ·
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4

What is the Correct Value of q/Q for 1/5 the Maximum Electrostatic Force?

  • eurekameh
  • · Replies 5 ·
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5

How Does Wavefront Orientation Change When Light Enters a Slower Medium?

  • Peter G.
  • · Replies 12 ·
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12

Electron traveling parallel to a Uniform Electric Field

  • format1998
  • · Replies 2 ·
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2

The influenza A virus is a spherical virus

  • lalahelp
  • · Replies 2 ·
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2
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3
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1

Electric force, tension, charge

  • ajmCane22
  • · Replies 2 ·
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2

Find the value of the z component of the total electric field

  • blueyellow
  • · Replies 7 ·
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7

Rolling and sliding sphere on flat surface

  • versatilehong
  • · Replies 1 ·
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1

Calculate the y component of the electric field at a generic point(x,y)

  • blueyellow
  • · Replies 2 ·
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2

Calculating Horizontal Force for 3 Boxes on Frictionless Surface

  • [KNIGHT]
  • · Replies 17 ·
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17

Solving Kinematics Questions with 5 Variables

  • MattJ81
  • · Replies 9 ·
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9

What is the Correct Way to Calculate Torque in a Uniform Boom System?

  • Jimmy84
  • · Replies 4 ·
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4

How Do You Find the Gravitational Field at a Corner of a Square?

  • Stuffy01
  • · Replies 8 ·
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8
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2

Find Kmax with given numerical quantities

  • xpaulinabearx
  • · Replies 4 ·
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4

Charge in Metals (Supposed to be easy)

  • alfredo24pr
  • · Replies 3 ·
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3

Phase space trajectory question

  • Grand
  • · Replies 1 ·
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1

Solving Hall-Petch Equation Homework

  • TyErd
  • · Replies 3 ·
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3

Calculate the total energy stored in the capacitor as a function of x

  • blueyellow
  • · Replies 11 ·
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11

Density and Uncertainty of a Block?

  • Wa1337
  • · Replies 1 ·
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1

Airplane flying in a crosswind problem

  • CaYn
  • · Replies 1 ·
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1

Magnitude/direction of point charges

  • ajmCane22
  • · Replies 1 ·
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1
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3

How do panpipes produce standing waves and does resonance occur?

  • changedname
  • · Replies 1 ·
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1

Converting km/hr to m/s^2: What is the Formula?

  • ATranPV
  • · Replies 7 ·
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7

Finding the magnitude of an electric field.

  • atn9200
  • · Replies 1 ·
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1

Point charges in an electromagnetic field

  • nmendoza37
  • · Replies 1 ·
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1

Why Does a Green Glass Plate Absorb Everything Except Green?

  • logearav
  • · Replies 2 ·
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2

What Are the Units of Constants A and B in the Equation x=At+Bt²?

  • tavo0116
  • · Replies 3 ·
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3

Designing an investigation into mobile phone radiation and brain tumors

  • chan teckming
  • · Replies 1 ·
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1

Centripetal Force through Turns

  • RiskX
  • · Replies 3 ·
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3
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3

Calculate the total impedance of the circuit

  • blueyellow
  • · Replies 9 ·
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9

Finding amount of graphite in a Pencil

  • Manty
  • · Replies 5 ·
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5

An amusement park ride question, picture included

  • wmrunner24
  • · Replies 11 ·
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11

Maxwell's equations using vectors D and H

  • blueyellow
  • · Replies 2 ·
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2

Questions about Young's Double-Slit experiment and light waves intereference

  • insertnamehere
  • · Replies 8 ·
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8

What Is the Minimum Launch Angle to Hit a Target 200ft Away?

  • AirForceOne
  • · Replies 8 ·
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8

Bouncing Ball Graph/Quadratic Formula

  • Megzzy
  • · Replies 5 ·
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5

Finding the displacement under a curve.

  • kimberley511
  • · Replies 3 ·
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3

A very weird capacitor association

  • jaumzaum
  • · Replies 1 ·
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1

Finding area of a gold leaf given mass and thickness

  • bosburn93
  • · Replies 3 ·
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3

Capacitor current in function of time

  • jaumzaum
  • · Replies 2 ·
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2

Projectile motion y-velocity and position using momentum principle

  • Clutch
  • · Replies 1 ·
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1

Electric field of a charged ring.

  • NeverSummer
  • · Replies 2 ·
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2

Finding force needed to neutralize a vector

  • devrimorgan
  • · Replies 1 ·
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1

Calculating Average Speed and Velocity for a Commuting Student

  • ashtaylor89
  • · Replies 2 ·
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2

Finding g on unknown planet given only total time and a random height

  • tswvyimlis
  • · Replies 3 ·
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3

Projectile motion of a fired gun

  • 1MileCrash
  • · Replies 13 ·
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13

Diff. Eq. related to SHM question

  • astropi
  • · Replies 6 ·
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6

What is the Apparent Weight in an Accelerating Elevator?

  • Zach Knight
  • · Replies 2 ·
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2

Finding the initial velocity, .

  • megkirch
  • · Replies 15 ·
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15

Solving for Time and Velocity with Only Three Variables

  • pianoguy1088
  • · Replies 2 ·
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2

Electrostatic force and magnitude problem

  • loganblacke
  • · Replies 3 ·
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3