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

Problem with two review problems

  • maverick99
  • · Replies 6 ·
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6

Why does the amplitude of a loudspeaker cone change with frequency?

  • saltrock
  • · Replies 3 ·
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3

Spring compression in hydraulic system with rock on output plunger

  • foggy
  • · Replies 2 ·
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2
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Checking elastic energy and gravitational potential calculations

  • Raza
  • · Replies 2 ·
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2
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2

Building a newspaper bridge to hold 3 kg over 1 meter

  • ms. confused
  • · Replies 2 ·
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2

What is the Impact of a Time-Dependent Force on an Object's Velocity?

  • BbyBlue24
  • · Replies 8 ·
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8
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1
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5

Why are the left cosets of {1, 11} in U(30) equal to H, 7H, 13H, 19H?

  • semidevil
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3

Finding speed ratio at perigee and apogee for Explorer VIII satellite

  • BbyBlue24
  • · Replies 7 ·
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7

Will a 5 kg Block Slide on a 50 Degree Incline Plane? Calculation and Answer

  • tony873004
  • · Replies 5 ·
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5

Calculating Horse Power: How Many Bundles of Shingles Can a Horse Hoist?

  • UrbanXrisis
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2

Moment of Inertia for three rods

  • hL
  • · Replies 2 ·
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2

What is the force work done by force F along OAC, OBC, OC

  • UrbanXrisis
  • · Replies 13 ·
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13

2 challenge problems for tommorrow(dec 7)

  • Skotster
  • · Replies 2 ·
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2

Two limited integration questions

  • hhegab
  • · Replies 3 ·
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3

Solving Liquid Flow Problem: Speed in Lower Pipe

  • thursdaytbs
  • · Replies 2 ·
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2

Why combining neckties at average price loses $10 in profit

  • StaRz
  • · Replies 2 ·
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2

Find the time required for the boat to slow to 45 km/hr

  • king_naeem
  • · Replies 2 ·
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2

Solving for the Target's Mass in a One-Dimensional Elastic Collision

  • physics87
  • · Replies 2 ·
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2

Measure the resistance of a coil of wire using a voltmeter/ammeter

  • PakiPie
  • · Replies 2 ·
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2

Calculate Expectation Value of Particle in Infinite Box

  • paul11273
  • · Replies 7 ·
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7

What is the speed of the block in this compressed spring problem?

  • BlackMamba
  • · Replies 6 ·
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6

Acceleration of Falling Mass Attached to 5cm Pulley

  • hannibal
  • · Replies 2 ·
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2

How can I calculate the speed of a bullet using a ballistic pendulum?

  • mikep
  • · Replies 2 ·
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2

Why do we use a high voltage and not a high current?

  • Pseudo Statistic
  • · Replies 2 ·
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2

Very close to being finished, me with these 2 problems

  • WillP
  • · Replies 2 ·
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2

Solving Calculus Equations with Curves Passing Through the Origin

  • roger
  • · Replies 4 ·
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4

Thermal conductivity of neoprene

  • Sophie_King
  • · Replies 2 ·
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2

PHYSICS 30 - The Nature Of Matter

  • Invisible
  • · Replies 2 ·
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2

Water shot from a hose reaches 2.5 m height

  • Jacob87411
  • · Replies 8 ·
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8
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6

Stone-Weierstrass theorem problem

  • cogito²
  • · Replies 2 ·
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2

Which Cast Iron Skillet Requires More Heat?

  • krazeekid7
  • · Replies 3 ·
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3

Simplifying rational expression with restrictions

  • aisha
  • · Replies 5 ·
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5

What to focus on for calculus final on limits and derivatives?

  • ziddy83
  • · Replies 3 ·
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3

Fit squares of sides 1, 4, 7, 8, 9, 10, 14, 15, 18 into a rectangle

  • GuMdRop
  • · Replies 2 ·
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2
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2

What is the best approach for Integration by parts?

  • Tom McCurdy
  • · Replies 27 ·
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27

How Far Does the Mass Fall Before the Dime Slides Off the Disk?

  • kornwestheim
  • · Replies 8 ·
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8

Boy and girl velocities after snowball toss on ice

  • simpreza2
  • · Replies 6 ·
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6

What Is the Required Angle for a Block to Slide Up an Inclined Plane?

  • mxtiger67
  • · Replies 11 ·
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Two more hard probability questions

  • ms. confused
  • · Replies 8 ·
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8

Filling a Book Shelf: The Work Required

  • Rapta3
  • · Replies 2 ·
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2

Solving Orbital Radius Problem: Reduce Radius by 1.09 km

  • jbot2222
  • · Replies 2 ·
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2

Finding Extreme Values of Functions Without Graphing or Calculators

  • Shay10825
  • · Replies 11 ·
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11
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2

Proving three trigonometric identities

  • xLaser
  • · Replies 4 ·
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4

What Is the Magnetic Field at the Center of a Square Wire Loop?

  • rothrock98
  • · Replies 6 ·
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6

Heat required for isochoric heating of helium gas

  • Enoch
  • · Replies 2 ·
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2

Solve an Ellipse Product Min Problem with LaGrange

  • MatSci
  • · Replies 6 ·
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6

Different answer from teacher's .

  • dncnqn
  • · Replies 2 ·
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2

Differential Equation w/ Power Series Solution

  • DivGradCurl
  • · Replies 4 ·
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4

What Is the Coefficient of Friction for a Dry Pig on a 27-Degree Slide?

  • idontgetit
  • · Replies 2 ·
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2

What is the Average Acceleration of a Plane Making a Gradual Turn?

  • Elphaba
  • · Replies 5 ·
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5

What is the final charge on the capacitor in this circuit?

  • joshanders_84
  • · Replies 2 ·
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2

Sticky collision formula for conservation of momentum

  • Afro_Akuma
  • · Replies 9 ·
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9

25N force opposite to displacement on a box

  • dragon84
  • · Replies 4 ·
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4

How Can I Get Help with Physics and Calculus Problems?

  • hd28cw
  • · Replies 2 ·
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2

Deriving an Expression for a Sinusoidal Wave on a String

  • krazeekid7
  • · Replies 2 ·
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2

How Do I Find a Wave Function for a Neutron in a Double Slit Experiment?

  • bannadonna
  • · Replies 1 ·
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1

Isomorphism between Q[x]/(x-1) and Q[x]/(x-2)

  • Palindrom
  • · Replies 2 ·
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2

What are the steps to calculate uncertainty in quantum mechanics?

  • jsundberg
  • · Replies 7 ·
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7

Why does (sin x)/x³ approach infinity as x approaches 0?

  • mad
  • · Replies 7 ·
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7

How to Simplify a Boolean Reduction Problem?

  • DethRose
  • · Replies 8 ·
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8

How many sonic booms from an aircraft at 5 times the speed of sound?

  • ponjavic
  • · Replies 2 ·
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2

How Do You Calculate Work Done by Gas in Thermodynamics?

  • Enoch
  • · Replies 2 ·
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2

Hooke's Law and Simple Harmonic Motion

  • Soaring Crane
  • · Replies 5 ·
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5

Solving (25-x) / 2.6 = (0-x) / .2718

  • pitchharmonics
  • · Replies 2 ·
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2

Calculating KEf for Two Connected Boxes - Frictionless Surface

  • simpreza2
  • · Replies 6 ·
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6

Me again (ideal gas/free expansion) soon

  • don_anon25
  • · Replies 2 ·
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2

Calculating Work and Average Force in a Meteor Impact on Sand

  • jbot2222
  • · Replies 2 ·
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2

How to find efficiency of a pulley system lifting a 5kg box

  • SummerSweety30
  • · Replies 6 ·
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6
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15

Need Homework Help For A.P. Physics 11th Grade

  • Kimorto
  • · Replies 5 ·
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5
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5

How can i evaluate trig functions?

  • preet
  • · Replies 2 ·
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2

What is the frequency of the oscillation?

  • physicsss
  • · Replies 9 ·
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9

Producing hydrogen from water with solar electricity

  • yawie
  • · Replies 2 ·
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2

How Does Slit Spacing Affect Light Diffraction Patterns?

  • cuti_pie75
  • · Replies 1 ·
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1

Trouble Understanding Torque? Steps to Follow!

  • triden
  • · Replies 4 ·
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4
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2

Simple harmonic motion mass on a spring

  • saltrock
  • · Replies 2 ·
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2

Calculating Energy and Speed in a 2-Dimensional Roller Coaster

  • HawKMX2004
  • · Replies 6 ·
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6

Solving 3x/(x²-1)=x/(x+1)-4

  • aisha
  • · Replies 6 ·
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6

How Does Mass Affect Momentum and Kinetic Energy in Motion?

  • senseandsanity
  • · Replies 2 ·
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2

Vertical asymptotes, intercepts, domain and range of f(x)=1/(4x²-1)

  • aisha
  • · Replies 2 ·
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2

Solve log_b(xy): Express in terms of p, q

  • footprints
  • · Replies 4 ·
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4

Calculating Displacement and Speed in a Standing Wave on a String

  • Lakers08
  • · Replies 2 ·
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2

How Is the Average Force Calculated in an Elastic Collision with a Wall?

  • tigerseye
  • · Replies 2 ·
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2

Finding x: Block Sliding on Spring SHM

  • physicsss
  • · Replies 3 ·
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3

Finding reciprocals of y=x² and y=√x and graphing them

  • Raza
  • · Replies 7 ·
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7

Are My Calculations on Ladder Equilibrium and Torque Correct?

  • buffgilville
  • · Replies 4 ·
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4

What is the moment of inertia of the ball about the axis of rotation?

  • buffgilville
  • · Replies 5 ·
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5

Fluid Pressures on a Vertical Surface, Oh My

  • Gaplant
  • · Replies 4 ·
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4

Momentum Change: Car vs. Truck Collision Comparison

  • Jatsix30
  • · Replies 3 ·
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3

Converting orbital period from hours to seconds for gravity calculation

  • triden
  • · Replies 7 ·
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7