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

What is the derivation of 2e^{2t}\sin{t} in Laplace transform?

  • faust9
  • · Replies 3 ·
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Straight-line Kinematics problem

  • LD_90
  • · Replies 4 ·
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4

Moment of Inertia and anemometer

  • masamune
  • · Replies 6 ·
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6

Counting Methods: Understanding 8-Bit String Patterns

  • ptex
  • · Replies 4 ·
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4

Statics problem from UNCC Physics test 3A question 4

  • spatel600
  • · Replies 8 ·
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8

How Do You Solve the Integral of (e^-2x) / (1+e^-x)?

  • philipc
  • · Replies 4 ·
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4

What is the thickness of the spacer?

  • jazzchan
  • · Replies 2 ·
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2

Analyzing Forces and Acceleration in a System of Connected Particles

  • mcintyre_ie
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3

How to Calculate the Width of Slits in a Diffraction Grating Experiment?

  • mrbling
  • · Replies 2 ·
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2

Railroad Car: Man's Weight Affects Velocity Change

  • skiboka33
  • · Replies 2 ·
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2

Fortran prog - flight traj of projectile

  • franKing
  • · Replies 6 ·
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6

What is the average pulling force?

  • kurtlau
  • · Replies 3 ·
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3

Coefficient of static friction of car

  • hyen84
  • · Replies 5 ·
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5

Defibrillator current physics problem

  • moonlit
  • · Replies 7 ·
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7

How Do Tension Changes Affect the Frequency of Violin Strings?

  • eku_girl83
  • · Replies 2 ·
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2

Understanding Angular Momentum Conservation in Rotating Bodies

  • ACLerok
  • · Replies 11 ·
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11

How Do You Solve These Kinematics Problems Involving Falling Objects?

  • Phantom8295
  • · Replies 9 ·
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9

Finding c so the integral converges with hyperbolic and logarithmic terms

  • AngelofMusic
  • · Replies 6 ·
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6

A simple Rigid Bodies Question

  • AngelofMusic
  • · Replies 5 ·
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5

Help Needed: High School Math Test Decides My Future

  • Dagenais
  • · Replies 4 ·
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4

Algebra 2 natural logarithms problem

  • mustang
  • · Replies 6 ·
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6

Determining air density from mass-pressure data without container volume

  • sickboy
  • · Replies 3 ·
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3

Chem+Physics: Solving the Piston Puzzle

  • prinzessin04
  • · Replies 2 ·
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2

How do I solve this challenging mechanic statics problem?

  • paul11273
  • · Replies 2 ·
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2

Finding vertex, discriminant, and roots in polynomial equations

  • mustang
  • · Replies 2 ·
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2

What is the acceleration of a jojo falling down a string?

  • olympiad
  • · Replies 5 ·
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5

Net work and heat for ideal gas cycle with n = 2.6

  • maxpowers_00
  • · Replies 2 ·
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2

Solving motion of undamped harmonic oscillator

  • jlmac2001
  • · Replies 2 ·
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2

Tips for Writing a Scientific Paper for Submission: Can I Get a Link?

  • IooqXpooI
  • · Replies 2 ·
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2

Minimum stopping distance formula and ball rolling off stairs

  • wikidrox
  • · Replies 5 ·
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5

Force exerted by the floor on the feet of a student doing pushups

  • PhysicsPhun
  • · Replies 3 ·
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3

How Far Can a Mass Be Placed on a Bar Before the Supporting Wire Breaks?

  • PhysicsPhun
  • · Replies 2 ·
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2

Infinite sheet of chargejust on sigma stuff

  • rdn98
  • · Replies 3 ·
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3

Can A Painter Safely Stand on a Ladder?

  • PhysicsPhun
  • · Replies 9 ·
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9

Calculating Mean Distance Traveled by Pi-Mesons at Speed v=0.3c

  • EIRE2003
  • · Replies 7 ·
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7

Finding the period from SHM equation x = A cos(ωt + φ)

  • NanoTech
  • · Replies 3 ·
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3

Composition of the 3 Pi-Meson Types

  • EIRE2003
  • · Replies 2 ·
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2

Mechanics Question of a wheel chair

  • EIRE2003
  • · Replies 3 ·
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3
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2

Magnetic Fields and electron beam

  • moonlit
  • · Replies 19 ·
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19

Decreasing current in capacitors

  • UrbanXrisis
  • · Replies 3 ·
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3

Math Methods problem (Trig question)

  • Sombra
  • · Replies 3 ·
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3

Friction, energies and variable distance

  • Chen
  • · Replies 9 ·
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9

Solve Elevator Problem: Find Motor HP of 1000 kg Lift

  • KingNothing
  • · Replies 2 ·
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2

Find Capacitance from Graph of a Capacitor

  • UrbanXrisis
  • · Replies 3 ·
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3

Does atomic arrangement affect molecular mass and volume?

  • SigInt
  • · Replies 2 ·
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2
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6

Ball in gravity: how high does the ball go? Initial velocity?

  • mayo2kett
  • · Replies 13 ·
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13

Angular Momentum -Opening a door with a bullet

  • Vickitty
  • · Replies 4 ·
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4

How Does a Moving Rod Affect Current in a Magnetic Field?

  • pattiecake
  • · Replies 2 ·
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2

Conservation of energy relativity problem

  • hibiscus23
  • · Replies 5 ·
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5

Solve Mechanical Physics Problems: Torque and Angular Velocity

  • Dingo Jellybean
  • · Replies 2 ·
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2

Is T a Linear Transformation from V to R1?

  • discoverer02
  • · Replies 2 ·
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2

Cart bouncing between two springs with free flight phase

  • Vickitty
  • · Replies 2 ·
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2

How do I solve for the area and volume of a cosinusoidal curve?

  • pig
  • · Replies 4 ·
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4

Trophic level of weasels and stoats in a biomass pyramid

  • garytse86
  • · Replies 2 ·
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2

Wave Velocity along X-Axis: 4m/s

  • Xamfy19
  • · Replies 2 ·
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2

How Do You Calculate Train Energy Dynamics and Power Output?

  • JamesL
  • · Replies 5 ·
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5
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3

How Fast Is the Suction Rate of a Gravity Type Coalescing Separator?

  • rohan_verma
  • · Replies 2 ·
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2

What are the steps for solving problems involving forces and energy?

  • KingNothing
  • · Replies 8 ·
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8

Which is a better coolant for a car: methanol or water?

  • Soaring Crane
  • · Replies 2 ·
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2

How to Find x + y When xy = 1,000 Without Using 10 as a Factor?

  • mustang
  • · Replies 3 ·
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3

To do with the Philosophy of Ethics

  • oranges and lemons
  • · Replies 2 ·
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2

Finding electric field from force on an electron

  • UrbanXrisis
  • · Replies 2 ·
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2

Solving Interference and Diffraction Problems

  • tandoorichicken
  • · Replies 2 ·
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2

Finding the Sum of Two Numbers When Their Product is 1,000

  • mustang
  • · Replies 3 ·
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3

Minimizing total cost of a 2800-mile truck trip

  • prinzessin04
  • · Replies 3 ·
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3

Electric Field Calc: Determine Magnitude w/ Spreadsheets/Calculus

  • formulajoe
  • · Replies 2 ·
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2

Calculating Octagon Area from Perimeter of 72

  • Dagenais
  • · Replies 2 ·
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2

What is the Law of Balanced Forces?

  • wikidrox
  • · Replies 3 ·
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3

Are Electrons the Buckets or the Water?

  • holly
  • · Replies 3 ·
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3

Where Can I Learn Online Optimization Techniques for Calculus Problems?

  • prinzessin04
  • · Replies 2 ·
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2

How Does Friction Impact Motion on Slopes?

  • st3dent
  • · Replies 18 ·
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18

How Are Baseball and the Moon Connected?

  • Aurora Eveline Jai
  • · Replies 2 ·
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2

Steel Ball Collision: Calculating Velocity and Direction

  • 3.14159265358979
  • · Replies 4 ·
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4

Equilibrium giving me some trouble

  • mikeman19
  • · Replies 2 ·
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2
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10

Solve for Slowest Constant Speed to Catch a Train

  • jennypear
  • · Replies 3 ·
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3

How to Solve a Buoyancy Problem

  • new324
  • · Replies 6 ·
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6

Why Is My Calculation of Initial Velocity Incorrect in Projectile Motion?

  • jennypear
  • · Replies 6 ·
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6

How Is the Average Force Exerted by a Golf Club on a Ball Calculated?

  • MatrixGL
  • · Replies 8 ·
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8

How Does Gyroscopic Precession Relate to Torque and Angular Momentum?

  • cucumber
  • · Replies 3 ·
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3

Impulse-momentum theorem hmwk problem

  • profuse007
  • · Replies 2 ·
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2

Magnetic force between 3 straight wires

  • kiewelb
  • · Replies 2 ·
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2

Spring with 2.2 kg mass: extension, acceleration, velocity, period

  • math4me
  • · Replies 4 ·
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4

Calculating String Tensions in a Hanging Meter Stick

  • cuz937100
  • · Replies 13 ·
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13

Best College-level Physics Text?

  • sidm
  • · Replies 2 ·
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2
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9

Diffraction limit on resolution

  • mrbling
  • · Replies 4 ·
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4

Solving Frequency in Pipes - eku_girl

  • eku_girl83
  • · Replies 7 ·
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7

What do we call the work due to the change of velocity?

  • ninaricci
  • · Replies 5 ·
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5

How to prove simple harmonic motion from a bifilar pendulum experiment

  • infinit
  • · Replies 2 ·
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2

Finding the Maximum Length of a .110 kg Remote

  • mr_octo
  • · Replies 2 ·
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2

Hollow sphere rising to lake surface: what fraction submerges?

  • lollypop
  • · Replies 2 ·
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2

Euler' s equations and tau = zero?

  • student1938
  • · Replies 3 ·
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3

Can a power series have an interval of convergence of (0,1] or (0,∞)?

  • maxpowers_00
  • · Replies 2 ·
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2

How far can a 9m beam extend over a ledge before tipping?

  • SsUeSbIaEs
  • · Replies 2 ·
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2

Is There a Solution to This Differential Equation Problem?

  • Gunni
  • · Replies 4 ·
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4