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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2

What is the Debye Shielding Problem?

  • ggpwntthxbai
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How Many Coulombs Can Flow Through a 15A Breaker Before It Trips?

  • DrummingAtom
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4

Find the Current Through a Resistor with a Constant Current Source

  • drumercalzone
  • · Replies 7 ·
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7

Is this calculation correct for v = 2πfA ?

  • ElectricJesus
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2

Equillibrium of electrostatic forces of 2 charges on a 3rd

  • afulldevnull
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3

How Does Air Pressure Affect the Range of Alpha-Particles?

  • wulmazboy
  • · Replies 3 ·
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3

How can the man stay in balance with a rope?

  • khuko
  • · Replies 14 ·
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14

How long until the ball hits the ground?

  • hyde2042
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4

Potential difference between charges +q and -q separated by distance R

  • Highwaydude
  • · Replies 4 ·
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Does mass affect the period of oscillation on a spring?

  • Peter G.
  • · Replies 7 ·
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Pion decay to muon and neutrino: finding pion mass

  • davidpotts
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Calculating Linear Change in MgO Under 100 MPa Stress

  • thephysicsman
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Converting 4163 kJ/mol to kJ/litre using molar mass

  • clintyip
  • · Replies 9 ·
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9

Are Momentum Equations Different for Elastic and Inelastic Collisions?

  • Hanga
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Projectile Motion or Motion in Two dimension

  • Myung
  • · Replies 3 ·
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3

What speed must the ball be thrown

  • 1MileCrash
  • · Replies 20 ·
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20

Free falling body after certain height

  • lase
  • · Replies 8 ·
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8

Wavelength - Yellow line in the spectrum of a sodium lamp

  • mstud
  • · Replies 2 ·
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2

How do I find missing terms in kinematic equations?

  • cneedshelp
  • · Replies 12 ·
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12

Calculating Potential Energy of a Spring System without Gravity

  • greencleaner
  • · Replies 4 ·
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4

Equilivant Resistance with Source

  • dhens43
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E field from two charges at origin and 8m

  • pyroknife
  • · Replies 7 ·
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7

Time when car stopped given initial velocity and acceleration

  • 1MileCrash
  • · Replies 9 ·
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9

Man on a Flatbed: Inertia Prediction

  • littlesohi
  • · Replies 1 ·
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Do Bullets Fired Upwards Pose a Risk When They Return to Earth?

  • latentcorpse
  • · Replies 4 ·
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4
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Simple Harmonic Motion - Acceleration and Time Period

  • ProPM
  • · Replies 3 ·
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3

Find vector components when adding and subtracting two vectors

  • littlesohi
  • · Replies 1 ·
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Production of the bremsstrahlung

  • nousername
  • · Replies 1 ·
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Where does this equation come from?

  • hermano
  • · Replies 2 ·
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Why does an X-ray tube have both tungsten and copper anodes?

  • nousername
  • · Replies 4 ·
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2
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Figuring out time when you have acceleration and distance.

  • cneedshelp
  • · Replies 2 ·
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Acceleration of a falling object at specific times

  • cneedshelp
  • · Replies 5 ·
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5

Acceleration equations involving time.

  • cneedshelp
  • · Replies 5 ·
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5

How Do You Construct Shear and Moment Diagrams for a Frame Beam?

  • jtpijnenburg
  • · Replies 1 ·
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What is the wavelength of the radiation emitted at transition 3?

  • mstud
  • · Replies 2 ·
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2

Finding the distance at which Car 1 overtakes Car 2

  • azadder
  • · Replies 5 ·
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5

Centripetal force motorcycle problem

  • bulbasaur88
  • · Replies 2 ·
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2

Converting specific gravity to pressure in hydrostatic formula

  • TyErd
  • · Replies 11 ·
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11

Determination of the wavelength of a spectral line

  • mstud
  • · Replies 2 ·
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2

Speed at the top of a vertical loop-the-loop with normal force

  • bulbasaur88
  • · Replies 2 ·
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2

Corrective lenses, power of the eye change

  • DJ-Smiles
  • · Replies 2 ·
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Calculate Gravity Car Distance with 840g + x Weight

  • PhyzWizKid
  • · Replies 9 ·
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9

Energy of an atom in an excited state

  • mstud
  • · Replies 1 ·
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1

You are driving down the highway and you brake to avoid hitting a deer

  • skysunsand
  • · Replies 3 ·
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3

Calculate Absolute Pressure with P = pgh

  • TyErd
  • · Replies 4 ·
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4

Pipe and speed of sound question

  • xtheunknown0
  • · Replies 7 ·
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7

Effect of elevator acceleration on spring-mass oscillation

  • Peter G.
  • · Replies 1 ·
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1

RLC parallel circuit; fourier components

  • mathman44
  • · Replies 10 ·
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10

Load voltage with shorted load / open load

  • illidari
  • · Replies 6 ·
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6

Find where e-field is 0 question.

  • pyroknife
  • · Replies 6 ·
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6

Prooving a projectile motion formula

  • stonecoldgen
  • · Replies 2 ·
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Thermodynamics heat engine Question

  • blackwing1
  • · Replies 2 ·
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2

Centripetal forces and satellites

  • supmiller
  • · Replies 2 ·
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Solving Projectile Motion Equation from Physics 8e - Chapter 3 Page 70

  • physkid1
  • · Replies 8 ·
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8

2D Kinematics - Finding Initial Velocity

  • whoopie88
  • · Replies 4 ·
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Energy Test, need some extra revision

  • BigMackey
  • · Replies 6 ·
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6

How Do You Solve for Variables in Algebraic Equations?

  • xpaulinabearx
  • · Replies 3 ·
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3

Steel - Youngs Modulus, Poisson Ratio

  • samirnasri
  • · Replies 1 ·
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Distance needed to survive a 150 km/h crash with airbag

  • Faka
  • · Replies 6 ·
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Why Does the Integral for Pendulum Swing Time Diverge at Zero Velocity?

  • LiorE
  • · Replies 11 ·
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Simplifying the Buckingham equation

  • stevemilw
  • · Replies 4 ·
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4

Does the normal force on a table have a reaction pair?

  • Peter G.
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3

What is the Total Force Exerted on a Vertical Dam by Water?

  • bcfcdan
  • · Replies 8 ·
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Correct explanation of how gyroscope works?

  • hyunwoo126
  • · Replies 7 ·
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7

Sound intensity and distance problem

  • foobarbazzer
  • · Replies 1 ·
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1

How Do Different Wavelengths Affect Pulse Timing in Fiber Optics?

  • mmanu
  • · Replies 1 ·
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Centre of Gravity of Multiple Crates

  • joe465
  • · Replies 10 ·
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10

Central Force Field: Meaning of Centrifugal Term

  • rob60
  • · Replies 4 ·
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4

Particle moving in an XY direction

  • Saba Gaad
  • · Replies 1 ·
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Car displacement vector and lunar lander free fall problem

  • Desecration
  • · Replies 8 ·
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8

Torque experienced by a current loop in uniform magnetic field

  • logearav
  • · Replies 13 ·
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Graphing acceleration versus theta to find gravity

  • channel1
  • · Replies 10 ·
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10

How to Study SHM with a Mass Between Two Springs?

  • Ipos Manger
  • · Replies 3 ·
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Uniform circular motion, trapeze artists problem

  • bulbasaur88
  • · Replies 4 ·
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4

Finding acceleration with Kinetic Friction coefficient

  • phee
  • · Replies 10 ·
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10

Find the percentage of electrons were removed?

  • blackbyron
  • · Replies 2 ·
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2

Torque friction on a rotating disk

  • kudoushinichi88
  • · Replies 8 ·
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8

Confusion with Kirchhoff's Law in Circuit Diagram

  • jforce93
  • · Replies 7 ·
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7

Why speed of the railroad hopper is the same? []

  • amiras
  • · Replies 13 ·
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13

How to Determine the Current in This Circuit?

  • W1z0
  • · Replies 1 ·
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Operation amplifier - inverting amplifier

  • logearav
  • · Replies 7 ·
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7

Force between two long parallel current carrying conductors

  • logearav
  • · Replies 6 ·
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6

Square of a wave function; way to understand

  • Juqon
  • · Replies 15 ·
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15

Electric field, dipole moment and potential energy of two point charges

  • bmarson123
  • · Replies 9 ·
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What equations do I need for a power consumption problem?

  • TyErd
  • · Replies 5 ·
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Total Mechanical Energy: Mass or No Mass?

  • TyErd
  • · Replies 4 ·
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4

Uniform circular motion, earth's rotation

  • bulbasaur88
  • · Replies 2 ·
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2

Flowerpot passing window kinematics problem

  • razrsharp67
  • · Replies 12 ·
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12

Height of ramp given normal force in circular loop

  • mastergaurang
  • · Replies 1 ·
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1

Constant Velocity (Finding when 2 objects will intersect)

  • davyvfr
  • · Replies 4 ·
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4

Normal Force acting on tries of a go-cart

  • Hanga
  • · Replies 9 ·
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9

Basic electronics problem with an amplification factor for a transistor

  • Femme_physics
  • · Replies 25 ·
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25

Calculating the work done to bring charges together

  • NewtonianAlch
  • · Replies 6 ·
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6

Path of a Balloon Tied to a Thread

  • Cromptu
  • · Replies 8 ·
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Maxwell's Equations - State what arbitary fields describe.

  • bmarson123
  • · Replies 7 ·
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Conservation of momnetum or Newtons second law?

  • vkash
  • · Replies 3 ·
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