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

How Do You Solve the I(γ) Integral with Trigonometric Substitution?

  • loloPF
  • · Replies 18 ·
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18

How Do I Prove Basic Vector Space Properties?

  • Delta-One
  • · Replies 5 ·
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5

Does a² + 2b² = c² have integer solutions?

  • Werg22
  • · Replies 2 ·
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2

Mutiple Choice - Equilibrium state

  • ChemRookie
  • · Replies 1 ·
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1

Calculate Speed of Proton in Electric Field

  • kpangrace
  • · Replies 3 ·
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3

Constant slope acceleration problem

  • shuvit760
  • · Replies 4 ·
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4

How Does a Car Maintain Centripetal Force on a Banked Turn Without Friction?

  • beginner16
  • · Replies 27 ·
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27

Solving Nested Double Integration Problems

  • ApeXaviour
  • · Replies 8 ·
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8

What is the equation for adiabats in a P-V plane?

  • moonman
  • · Replies 3 ·
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3

Finding spring constant and unknown mass from displacement data

  • Ginny Mac
  • · Replies 2 ·
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2

Eagle dropping gopher and projectile velocity calculations

  • SnackMan78
  • · Replies 2 ·
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2

Where did the missing root go in Ln[(x+1)^2]=2?

  • Robokapp
  • · Replies 6 ·
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6

Distribution of minimum of random variables

  • Millie
  • · Replies 2 ·
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2

Why is it difficult to get up when starting water skiing?

  • em123
  • · Replies 1 ·
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1

Calculate the maximum current a 140 ohms, 1/2 watt

  • Bobzombie
  • · Replies 1 ·
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1

What is the inductance needed for a maximum potential difference?

  • Pepsi24chevy
  • · Replies 7 ·
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7

What forces should be included?

  • Doppler
  • · Replies 8 ·
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8

How Does Power Depend on Resistance in Electrical Circuits?

  • khiamabbasi
  • · Replies 4 ·
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4

Differential Equation and Newtons 2. law

  • Atilla1982
  • · Replies 1 ·
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1

Problem with this trig identity

  • mcah5
  • · Replies 3 ·
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3

Projectile Motion Lab: Finding Angle for Hitting a Falling Target

  • jess2424
  • · Replies 2 ·
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2

Deriving a Launch Angle Equation - Projectile Motion -

  • IntellectIsStrength
  • · Replies 5 ·
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5

Series, Sequence and Probablility Question

  • TonyC
  • · Replies 8 ·
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8

How Do You Calculate the Sum of Squares from \(n+1\) to \(2n\)?

  • misogynisticfeminist
  • · Replies 2 ·
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2

Good old wedge and block sliding problem

  • code.master
  • · Replies 3 ·
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3

Race car on circular track and ship interception problems

  • physixnot4me
  • · Replies 11 ·
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11

Finding the integrating factor for sin y + cos y dy = 0

  • asdf1
  • · Replies 6 ·
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6
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5

Understanding Absolute Value Sign in Derivative

  • sony
  • · Replies 2 ·
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2

Function f Continuity at Irrational and 0: Sketch

  • iNCREDiBLE
  • · Replies 1 ·
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1

Solving Physics Problem: Mass of Gas Expelled for 7600kg Space Probe

  • twofish
  • · Replies 6 ·
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6

Solve Trig Equation: 1+cos(180+2u) let 90+u be f

  • UnD
  • · Replies 2 ·
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2

Mechanics - mass on a circular ramp

  • dusty8683
  • · Replies 2 ·
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2

What is the launch angle for a stream of water hitting a beetle on a leaf?

  • Blackwolf189
  • · Replies 3 ·
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3

Calculating the Present Value of an Annuity with Annual Compounding

  • TonyC
  • · Replies 2 ·
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2

Finding the angle of incline with pulley, friction, and given weights

  • robobot4
  • · Replies 10 ·
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10

How do I find the acceleration of a double plane system with friction?

  • seang
  • · Replies 4 ·
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4

How Is the Thickness of an Oil Film Calculated in a Plano-Convex Lens Setup?

  • beethoven'smahomeboy
  • · Replies 1 ·
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1

Initial Speed and Kinetic Friction: Theta

  • kcpeters
  • · Replies 1 ·
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1

How can I solve this integral using integration by parts?

  • jacy
  • · Replies 20 ·
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20
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1

Family road trip with highway and city speeds

  • might hire
  • · Replies 13 ·
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13

Checking my moments

  • caddyguy109
  • · Replies 2 ·
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2

Proof regarding 1-1, and onto mappings

  • calvino
  • · Replies 1 ·
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1

Calculate (a) the average velocity of the particle

  • juicev85
  • · Replies 4 ·
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4

How Long Will It Take a Space Tug to Pull an Asteroid?

  • Ztalin
  • · Replies 3 ·
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3

Finding intervals containing roots of 4x^2 - e^x = 0

  • stunner5000pt
  • · Replies 12 ·
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12

Why is relative velocity of car A to car B just 30 mi/hr minus 10 mi/hr?

  • thursdaytbs
  • · Replies 3 ·
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3

Can You Stop Your Truck Without Damaging the Antiques?

  • dekoi
  • · Replies 7 ·
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7

Can somebody explain the difference between monotone and continuous

  • Imparcticle
  • · Replies 1 ·
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1

Magnitude of Force Exerted on 1904kg Car by Road

  • AdnamaLeigh
  • · Replies 2 ·
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2

Motion, Strobe and Newton's Laws

  • physicsidiot71784
  • · Replies 1 ·
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1

Calculus I Practice Problems with Limits and Derivatives

  • dekoi
  • · Replies 2 ·
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2

How Do You Calculate Mass Using Newton's Laws?

  • ouse
  • · Replies 4 ·
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4

Use the Intermediate Value Theorem

  • scorpa
  • · Replies 5 ·
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5

How do I add two sine waves with different phases?

  • hotmail590
  • · Replies 10 ·
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10

Calc III< confused on what he wants from directions, graphing a limit?

  • mr_coffee
  • · Replies 8 ·
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8

At what distance has spheres decreased Electric potential by 700V?

  • mr_coffee
  • · Replies 3 ·
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3

How can I solve this differential equation with given initial conditions?

  • amcavoy
  • · Replies 5 ·
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5

Formula for calculating dew point from relative humidity and temperature

  • ZegeunerLeben
  • · Replies 4 ·
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4

Absolute Value Equation. (alg.2)

  • njkid
  • · Replies 2 ·
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2

Speed, acceleration and force for a 75kg man falling 3.10m

  • alafleur1
  • · Replies 1 ·
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1

Ranking electric field magnitude from potential vs position graph

  • mr_coffee
  • · Replies 2 ·
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2

What Forces Conserve Energy and What Is the English Unit of Force?

  • Poy
  • · Replies 3 ·
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3

Average acceleration for a sports car and sprinter

  • Martis31
  • · Replies 1 ·
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1

What is the ball's horizontal displacement?

  • F.B
  • · Replies 4 ·
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4

Help with Lenses Questions: Angle & Image Size

  • 123Sub-Zero
  • · Replies 2 ·
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2

Finding the radius of a merry-go-round from centripetal force

  • tboltzsoccer
  • · Replies 12 ·
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12

Adding duplicate removal function to linked list C++

  • heavyc
  • · Replies 1 ·
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1

Centrifuge Revolution Calculation

  • je55ica7
  • · Replies 4 ·
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4

What is a fColumb? Finding Net Electric potential, still wrong

  • mr_coffee
  • · Replies 3 ·
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3

Find the components of the force

  • kreil
  • · Replies 1 ·
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1

Calculating Forces and Acceleration

  • airelemental135
  • · Replies 1 ·
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1

Contradiction of 1000 Neutrons in 1D Box of Length L

  • quasar987
  • · Replies 14 ·
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14

Here's a toughy about pulleys and friction

  • CoCaDragonfly
  • · Replies 3 ·
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3
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1

Taylor Polynomial (n=4) for g(x): Showing 0<E4(x)<80x^5

  • sony
  • · Replies 2 ·
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2

Does a reversed film show a stone accelerating upward?

  • TickleMeElma
  • · Replies 5 ·
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5
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3

How Can I Simplify and Shift the Graph of Absolute Values?

  • Jeff Ford
  • · Replies 3 ·
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3

Calculating Power Needed to Move a 196kg Crate at 2.85m/s

  • willworkforfood
  • · Replies 5 ·
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5

How much heat is transferred and at what temperature?

  • ice87
  • · Replies 3 ·
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3

Permutations of prime ministers

  • fork
  • · Replies 3 ·
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3

How do you calculate fuel consumption for a car?

  • alex6192
  • · Replies 2 ·
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2

Change of variable in integral of e^(-nx²)

  • Castilla
  • · Replies 4 ·
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4

Alternative efficient ways to do partial fraction?

  • hanhao
  • · Replies 1 ·
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1

Ball thrown upward from building with linear air resistance

  • Warr
  • · Replies 4 ·
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4

Acceleration and maximum speed in a race with uniform acceleration

  • an_mui
  • · Replies 6 ·
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6

Find Electric Flux and Charge in Cube with Edge at (0,0,0)

  • stunner5000pt
  • · Replies 20 ·
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20

Relativistic Energy- well a basic algebraic simplification

  • Sneil
  • · Replies 4 ·
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4

Pilot flying in crosswind at 140 km/h, wind from northwest

  • lankan911
  • · Replies 2 ·
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2
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2

How do I combine drag and friction for a skier on a 40° slope?

  • Gott_ist_tot
  • · Replies 1 ·
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1

Solved: What Was the Missing Detail in This Integration by Parts Problem?

  • paul-martin
  • · Replies 5 ·
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5

What sort of spiral is traced out by each of the ants?

  • recon
  • · Replies 3 ·
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3

What is the inverse of ln(x^2) and its symmetry properties?

  • ludi_srbin
  • · Replies 5 ·
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5

Reduction of order method for second-order linear DEs

  • schattenjaeger
  • · Replies 2 ·
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2

Complex roots of second-order linear ODEs with constant coefficients

  • JM00404
  • · Replies 2 ·
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2

Parametric Equations for Tangent Line at (cos 0pi/6, sin 0pi/6, 0pi/6)

  • weckod
  • · Replies 9 ·
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9

What Is the Collision Height of Two Balls with Different Initial Velocities?

  • justagirl
  • · Replies 4 ·
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4