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

Finding Potential Difference Change with Dielectric Insertion in Capacitor

  • arod2812
  • · Replies 7 ·
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7

Why Does My Projectile Motion Calculation Keep Failing?

  • TS656577
  • · Replies 4 ·
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4

What is the vertical height between two climbers?

  • afcwestwarrior
  • · Replies 9 ·
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9
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4

Find the Height of a 90 Degree Notch in a Block of Metal

  • steadenator
  • · Replies 2 ·
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2

What is the Weight of a Satellite in kN?

  • mortho
  • · Replies 13 ·
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13

Gamma and neutron charges and masses in radioactive decay

  • _Mayday_
  • · Replies 5 ·
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5

Where Is the Electric Field Zero Between Two Charged Particles?

  • electricman
  • · Replies 2 ·
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2

Electric fields two point charges

  • mussgo
  • · Replies 4 ·
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4

Forces and friction in power-over drifting

  • Onjikaruto
  • · Replies 11 ·
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11
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2

What is the final speed of the ball when the goalie catches it?

  • ian_durrant
  • · Replies 2 ·
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2

Current in a 150 ohm relay coil at 12 V

  • ella_101
  • · Replies 1 ·
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1

What is the Speed of a Pendulum Bob?

  • looi76
  • · Replies 8 ·
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8

Electric Field Question: Finding Zero Points for Point Charges

  • altegron
  • · Replies 2 ·
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2

Torque with Pulley and Hanging Masses

  • latitude
  • · Replies 3 ·
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3

Projectile horizontal motion Question

  • blaxican707
  • · Replies 8 ·
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8

Velocity Vectors: Magnitude of V3 - A-F

  • am08
  • · Replies 5 ·
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5

Kinematics in two dimensions problem

  • ian_durrant
  • · Replies 5 ·
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5

Kinematic Equations for Constant Speed

  • stevenwho
  • · Replies 3 ·
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3

Solving a 20-Year Puzzle: A Sports Car Enthusiast's Homework

  • undrcvrbro
  • · Replies 1 ·
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1

Physics-electron charge transfer

  • kokenwa
  • · Replies 5 ·
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5

What Forces Act Between Alpha Particles in Unstable Nuclei?

  • snowborder456
  • · Replies 1 ·
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1

Moving particle acceleration problem

  • Melchior25
  • · Replies 1 ·
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1

Arrow shot at 45° hits tree 220m away, apple dropped to meet it

  • zellster87
  • · Replies 4 ·
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4

Rotational Kinetic energy in a loop

  • Metalsonic75
  • · Replies 4 ·
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4

So, the conversion factor is 10^6.

  • Twilit_Truth
  • · Replies 3 ·
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3

Calculating Particle Speed in a Relativistic Collision

  • Winzer
  • · Replies 3 ·
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3
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1

Calculate Maximum Water Boiled from 12.0V Car Battery

  • arod2812
  • · Replies 1 ·
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1

What Is the Minimum Radius for Safe Flight at 100 m/s?

  • mortho
  • · Replies 4 ·
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4

Hydraulic Lift.( U tube) and oil

  • dr3vil704
  • · Replies 1 ·
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1

How fast can a car go on a circular turn without skidding?

  • mortho
  • · Replies 7 ·
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7

Earth's density and its gravity

  • new-tonian
  • · Replies 1 ·
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1

Interference graph homework help needed

  • looi76
  • · Replies 1 ·
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1

Normal Force and Static Frictional Force

  • confounded
  • · Replies 1 ·
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1

How Far Can a Jetliner Travel West Against a Jet Stream and Return Safely?

  • confounded
  • · Replies 4 ·
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4

How Do You Calculate the Initial Speed of a Rock Kicked Off a Cliff?

  • Melchior25
  • · Replies 2 ·
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2

Projectile and Horizontal Distance

  • nightshade123
  • · Replies 13 ·
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13
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2

Finding Distance Up (Max Height) trouble

  • Mirth
  • · Replies 11 ·
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11

Evaluate the integral of 1/r from r to R

  • fiziksfun
  • · Replies 1 ·
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1

A spool of mass M sits upright on a table

  • bhimberg
  • · Replies 13 ·
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13

How Do Electric Fields Affect Particle Movement?

  • Tariq
  • · Replies 1 ·
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1

Where is the Center of Gravity of a Lying Person?

  • VanKwisH
  • · Replies 6 ·
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6

Does an Electric Field Exponentially Decrease in Free Space?

  • win_lan
  • · Replies 1 ·
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1

Reading of a pendulum clock from the earth to the moon

  • missashley
  • · Replies 3 ·
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3

Solving Atwood/Pulley Problems: Masses, Acceleration & Distance

  • BayernBlues
  • · Replies 1 ·
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1

What Do Slope and Y-Intercept Mean in Finding Gravity Constant?

  • BayernBlues
  • · Replies 1 ·
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1

Error Analysis On Excel Questions

  • BayernBlues
  • · Replies 2 ·
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2

Inclined cylinder torque problem

  • yasar1967
  • · Replies 2 ·
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2

Momentum, Gravity and Friction Mixed Problem

  • Haroon
  • · Replies 4 ·
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4
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1
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2

Estimating charges coulomb's law

  • mussgo
  • · Replies 6 ·
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6

Find the latent heat of vaporization

  • mibson
  • · Replies 5 ·
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5

Car with multiple acceleration and constant velocity phases

  • StephenDoty
  • · Replies 11 ·
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11

Why Is Kirchoff's Laws Problem Giving Different Answers?

  • andy s
  • · Replies 1 ·
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1

Density of ice in a 167 m tall iceberg with 1.50 km submerged

  • Twilit_Truth
  • · Replies 1 ·
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1

Finding direcitons of vectors - MIdterm is tomorrow.

  • MoreZitiPlease
  • · Replies 2 ·
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2

Ball released from a cliff: which initial throw gives greatest speed at bottom?

  • StephenDoty
  • · Replies 7 ·
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7

How to Solve for Velocity with Quadratic and Linear Drag Forces?

  • Col.Buendia
  • · Replies 2 ·
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2

Coulomb's law and String Tension

  • Aphrael
  • · Replies 16 ·
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16

Rearranging three equations to solve for C

  • ronislegend
  • · Replies 5 ·
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5

How Is Heat Distribution Calculated in a Diatomic Ideal Gas Expansion?

  • wowolala
  • · Replies 1 ·
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1

Application of the equations of motion with constant acceleration

  • sillybean
  • · Replies 3 ·
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3

Drawing a Y vs Time Graph in a projectile motion problem

  • Arejang
  • · Replies 9 ·
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9

Work done by electric force heats water from 0°C to 100°C

  • arod2812
  • · Replies 1 ·
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1

Wave interference, finding amplitude in certain situations

  • aliaze1
  • · Replies 7 ·
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7

How Fast Does a Penguin Slide on Ice After 8.75 Seconds?

  • anastasiaw
  • · Replies 4 ·
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4

Potential From an Electric Field

  • snoweangel27
  • · Replies 1 ·
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1

Calculate Distance to Drop Egg on Physics Professor's Head

  • starchild75
  • · Replies 5 ·
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5

Calculating Distance and Time in a Chasing Scenario

  • swathi
  • · Replies 4 ·
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4

Calculate k-Value for Car Drag Equation with Given Data

  • JolleJ
  • · Replies 1 ·
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1

Multiple choice questions on energy, forces, and thermal physics

  • blaziken's_charizard
  • · Replies 5 ·
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5

Calculating Electron Speed Between Two Point Charges

  • weathercheck
  • · Replies 3 ·
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3

Time for skier to escape avalanche on 30° slope with two friction coefficients

  • beocom6000yello
  • · Replies 2 ·
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2

How Do Forces Affect Acceleration on a Frictionless Surface?

  • beocom6000yello
  • · Replies 1 ·
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1

Projectile Motion Equations: Checking Answers for Moving Objects

  • Melchior25
  • · Replies 1 ·
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1

How Does Adding Electrons Affect the Net Charge of a Metal Sphere?

  • sheri1987
  • · Replies 3 ·
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3

Calculating Tension in a Hanging Mass: 15 and 25 Degree Angles

  • cashslash89
  • · Replies 1 ·
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1

Finding rocket velocity components after fuel ejection near ground

  • iuhoosierz
  • · Replies 3 ·
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3

How much time does it take to warm 2 litres water

  • mahima
  • · Replies 1 ·
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1
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3

Infinite R-chain: Find Resistance Between A and B

  • Vanessa23
  • · Replies 1 ·
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1

Power Calculation - 3063kW Confirmed?

  • Brett bALL
  • · Replies 1 ·
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1

Fringe with of interference pattern

  • looi76
  • · Replies 5 ·
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5

Deriving the trajectory of the particle

  • Tuugii
  • · Replies 4 ·
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4

Curvilinear Motion of a particle

  • Saladsamurai
  • · Replies 41 ·
2
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41

Algebra in velocity dependent forces

  • ax_xaein
  • · Replies 7 ·
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7

Mechanics: Accleration as a function of position

  • jmcmillian
  • · Replies 1 ·
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1

Average pressure exerted on two equal pistons

  • lollol
  • · Replies 3 ·
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3

Final Charge on Lower Plate of Water-Dipped Capacitor

  • i_island0
  • · Replies 4 ·
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4

Calculating Acceleration of Gravity w/ Kinematics

  • jesuslovesu
  • · Replies 1 ·
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1

Variable Problem for 2D Kinematics

  • apoptosis
  • · Replies 4 ·
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4

Projectile Motion and maximum angle

  • blindside
  • · Replies 6 ·
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6

How Is the Normal Force Calculated on a Charged Object on Level Ground?

  • faustud.
  • · Replies 3 ·
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3

Block pulled at an angle: speed after 5.90 s

  • anastasiaw
  • · Replies 1 ·
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1
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4

Struggling with Particle Displacement Equation?

  • ax_xaein
  • · Replies 2 ·
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2