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

Two forces acting upon an object.

  • AryRezvani
  • · Replies 10 ·
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10

Highschool Diving board distortion problem

  • Soccerface
  • · Replies 2 ·
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2

Need help Newtons laws two diemnsions (vertical plane)

  • flawlessbrown
  • · Replies 3 ·
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3

A car travels in a straight line

  • ArcherofScience
  • · Replies 22 ·
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22

Two objects being pushed by one force what is the force on the second? object

  • nyjets2428
  • · Replies 1 ·
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1

How to find Change in velocity on an Acceleration vs TIme Graph?

  • Ram012593
  • · Replies 1 ·
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1

Calculating the New Angle of Inclination for a Projectile Launcher

  • adivit
  • · Replies 1 ·
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1

Force NWhat is the significance of the little k in Hooke's Law?

  • MG5
  • · Replies 16 ·
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16

Consider two balls on an inclined track with a constant angle

  • jhj1259
  • · Replies 1 ·
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1

2D Friction-Finding the Force of Friction without Mu

  • Quantum_Ammy
  • · Replies 1 ·
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1

Making sense of Newton's Third Law

  • phosgenic
  • · Replies 5 ·
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5

A ball is dropped from a height of 39.0 m.

  • fsci13
  • · Replies 2 ·
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2

Calculating Average Force for a 1,662 kg Car in 19 secs

  • Hannah1
  • · Replies 2 ·
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2

Fluid dynamics: Knowledge continuity equation

  • Avalanche
  • · Replies 2 ·
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2

Horizontal Acceleration of a Stone

  • Hannah1
  • · Replies 5 ·
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5

More theoretical questions about acceleration and velocity

  • HealthPhysics
  • · Replies 3 ·
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3

How to Calculate Angular Momentum ?

  • chrisman10
  • · Replies 5 ·
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5

Question about net force/acceleration/constant velocity

  • phosgenic
  • · Replies 3 ·
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3

Relative Speeds in River Crossings

  • Klymene15
  • · Replies 10 ·
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10

Determining the Height of a Building

  • Barbados_Slim
  • · Replies 1 ·
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1

Why don't two objects bump into each other because of this gravity?

  • geekayphy
  • · Replies 4 ·
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4

Cat dropped from a Shelf, deceleration time?

  • rexexdesign
  • · Replies 10 ·
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10

Finding Resultant Vector C with Given Vectors A and B

  • warnexus
  • · Replies 1 ·
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1

Fictional force problem given a slope(grade)?

  • Butterfly30
  • · Replies 5 ·
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5

Calculate Pipe Sized Based on Pressure Differential and Flow Rate

  • SonnyBoy
  • · Replies 8 ·
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8

Are Your Moment Calculations for Bent Bar Reactions Correct?

  • whereitsbeen
  • · Replies 1 ·
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1

Faraday's Law of Induction - Current in Multiple Wires

  • PeachBanana
  • · Replies 9 ·
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9

Calculating the Speed of an Object Launched by a Spring Catapult

  • johnsholto
  • · Replies 1 ·
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1

How Do You Calculate Photon Flux from Apparent Magnitude?

  • roman93
  • · Replies 11 ·
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11

Heisenbergs uncertainity principle for an electron

  • DODGEVIPER13
  • · Replies 4 ·
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4

Calculating Distance to Home Plate in Projectile Motion

  • steven1495
  • · Replies 1 ·
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1

Calculating the resistance when the switch is off

  • kakadas
  • · Replies 17 ·
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17

Three forces on a box in different directions what is the acceleration

  • Lucaburra
  • · Replies 3 ·
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3

Why is the Time Period of a Pendulum & SHM Different?

  • Anoushka
  • · Replies 3 ·
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3

Finding the force from two charged rods one beside the other.

  • Eats Dirt
  • · Replies 3 ·
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3

Projectile being launched from ground level

  • AryRezvani
  • · Replies 18 ·
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18

Plot motion of particle with constant speed and angular velocity

  • S_Flaherty
  • · Replies 3 ·
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3

How Does Background Star Distance Affect Parallax Measurements?

  • ltjrpliskin
  • · Replies 5 ·
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5

How can I increase the distance of a catapult launch with a hollow ball?

  • Amenable Me
  • · Replies 4 ·
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4

Finding initial velocity for projectile motion at 0 degrees

  • 123456789@
  • · Replies 10 ·
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10

Got the answer, not convinced possible in reality?

  • unscientific
  • · Replies 11 ·
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11
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4

Calculating Area of Thermal Expansion for Non-Isotropic Materials

  • vkt420
  • · Replies 1 ·
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1

Solving the Entropy Puzzle: Blundell and Blundell Q&A

  • Jesssa
  • · Replies 6 ·
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6

Projectile motion boat gun problem

  • jesusu2
  • · Replies 1 ·
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1

Having trouble understanding the dB formula

  • Cee
  • · Replies 1 ·
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1

Banked Circular Motion without friction

  • hqjb
  • · Replies 1 ·
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1

How can kinetic energy and momentum be conserved in an elastic collision?

  • Hypercubes
  • · Replies 7 ·
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7

Understanding Superposition in RC Circuits with Kirchoff's Law

  • aaaa202
  • · Replies 2 ·
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2

How to Calculate Torque on a Frictionless Pulley with a Load?

  • hms.tech
  • · Replies 12 ·
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12

Relationship between pressure and altitude.

  • moonman239
  • · Replies 1 ·
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1

Projectile motion on an Inclined Plane

  • LadyMario
  • · Replies 1 ·
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1

Travel Sound Wave: Determine Wavelength, Frequency, etc.

  • rrandall
  • · Replies 1 ·
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1

Projectile motion with differing heights

  • Hedgehog1
  • · Replies 5 ·
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5

Simple Generator - Calculating N Loops

  • PeachBanana
  • · Replies 1 ·
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1

Object suspended by two cables, what are the tensions of each cable?

  • amyo16
  • · Replies 1 ·
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1

Complicated Physics problem involving velocity and acceleration

  • riseofphoenix
  • · Replies 1 ·
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1

A plane releases a water bomb after reaching a certain altitude. Find Angle

  • LadyMario
  • · Replies 21 ·
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21

Newton's 2nd Law Lab: Keeping Mass Constant?

  • Ally385
  • · Replies 1 ·
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1

Projectile Motion soccer ball Problems

  • pinksparkles2
  • · Replies 15 ·
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15

Resolving vectors problem (I guess)

  • bubakazouba
  • · Replies 2 ·
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2

Potential Energy, Springs, and Friction

  • cowmoo32
  • · Replies 3 ·
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3

What is the Velocity Vector of an Object After Undergoing Acceleration?

  • warnexus
  • · Replies 2 ·
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2

Charge particle between 2 paralleled plates

  • physicshelp19
  • · Replies 5 ·
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5

Angled Projectile at an elevated height w/o a given angle

  • darkdeeds
  • · Replies 6 ·
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6

Electric field necessary to create a spark.

  • joe_cool2
  • · Replies 1 ·
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1

Calculating torque when the lever arm has mass

  • threecorners
  • · Replies 3 ·
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3

Force required to keep block from sliding down (check)

  • Fizic
  • · Replies 3 ·
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3

Special Relativity Time Dilation and Distance Contraction

  • dumbperson
  • · Replies 1 ·
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1

Charges at the corners of a square.

  • msemsey
  • · Replies 2 ·
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2
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1

Calculating resultant force of friction from rope and bar.

  • Anasazi
  • · Replies 2 ·
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2

Question about basic Circuit, parallel and series connect

  • kougou
  • · Replies 1 ·
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1

What is the force on the resting ball from the two wooden boards?

  • joel amos
  • · Replies 3 ·
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3

Finding graphs from motion model

  • chinnie15
  • · Replies 11 ·
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11

A mass on a spring with a constant of 3.24

  • farah2020
  • · Replies 1 ·
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1

Solving Tennis Physics: Force & Acceleration

  • Meowserkitty
  • · Replies 8 ·
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8
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6

Calculating Airplane Velocity and Heading with Wind

  • joel amos
  • · Replies 4 ·
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4

Determining the weight and angle of an object - Help please

  • riseofphoenix
  • · Replies 3 ·
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3
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7

Coefficient of static friction.

  • alvarez91
  • · Replies 5 ·
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5

Maximum velocity by compressing spring

  • badsniper019
  • · Replies 8 ·
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8

Projectile Motion: Find Velocities and Angles

  • joel amos
  • · Replies 4 ·
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4

Finding the mass of a sphere with uniform charge density

  • ghost34
  • · Replies 1 ·
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1

Projectile motion: Finding flight distance with air resistance

  • proctortom
  • · Replies 1 ·
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1

Relative velocity practice exam question

  • izelkay
  • · Replies 3 ·
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3

Why doesn't the rope break when Harry is supported by it?

  • Meowserkitty
  • · Replies 6 ·
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6

Springs in a car (damped harmonic oscillator)

  • harr
  • · Replies 1 ·
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1

Multiple choice question on the absolute uncertainty?

  • nchin
  • · Replies 1 ·
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1

Finding angle of a reflected isosceles triangle

  • Brown Arrow
  • · Replies 1 ·
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1

Train traveling at relativistic speeds - Finding velocity.

  • chris_0101
  • · Replies 1 ·
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1

Thermodynamics - Entropy/Temperature question

  • Greger
  • · Replies 1 ·
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1
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3

Prove Electric Field Lines Go from High to Low Voltage Sources

  • Baygan
  • · Replies 1 ·
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1

Mass on Incline Homework: Solve Tension in Rope

  • rpg711
  • · Replies 7 ·
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7

The velocity of a particle at the origin.

  • MelissaJL
  • · Replies 6 ·
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6

Solving a 5kg Object's Frictionless Pipe Homework

  • shandsy
  • · Replies 2 ·
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2

Really in finding the acceleration for built boxes.

  • NasuSama
  • · Replies 6 ·
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6

Calculating Amplitude of Transverse Wave

  • howsockgothap
  • · Replies 1 ·
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1