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

[unusual problem]making an illustration on graphing calculator

  • Horror Business
  • · Replies 4 ·
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4

What is the required energy for a projectile to escape Earth?

  • mrdrew
  • · Replies 4 ·
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4

Calculating Impulse and Final Velocity in a Ball Collision Problem

  • pinky2468
  • · Replies 8 ·
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8

Conservation of linear momentum understanding

  • faisal
  • · Replies 3 ·
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3

Calculate Number of Digits in a Number - Formula

  • UrbanXrisis
  • · Replies 10 ·
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10

Formula for trolley sliding down a slope with varying angle and distance

  • Padford
  • · Replies 2 ·
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2

Tension with a tension problem?

  • charvonne coates
  • · Replies 4 ·
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4

Calculating Car Speed: Using Skid Marks and Friction Coefficient

  • TriumphDog1
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2

Is the textbook answer for acceleration and distance correct?

  • Afro_Akuma
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2

Calculating Stress for a Metal with Young's Modulus of 1.9*10^11

  • shell
  • · Replies 2 ·
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2

Finding the angle between two lines

  • Rocko
  • · Replies 6 ·
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6

Calculating Velocity and Impulse of Broken Plate

  • Naeem
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2

Calculating Gravitational Potential Energy of a Child on a Swing

  • nazarip
  • · Replies 4 ·
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4

Max and Min Applied Force for Stationary Block on Inclined Plane

  • thenewbosco
  • · Replies 7 ·
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7

Where Can I Find Free Software for Simple Geometrical Drafting?

  • dekoi
  • · Replies 2 ·
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2

How Can Two Perpendicular Vectors with Different Magnitudes Sum Up to (6, 8)?

  • stunner5000pt
  • · Replies 7 ·
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7

Finding g(y) using Clairaut's theorem with mixed partial derivatives

  • matpo39
  • · Replies 2 ·
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2

Can you calculate the speed of a man jumping onto a spring-loaded platform?

  • quick02si
  • · Replies 2 ·
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2

Limit as h->0 when [cos(pi/2+h)]/h

  • UrbanXrisis
  • · Replies 2 ·
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2

Question from Fundamentals of Physics, 6th edition (exhanced) .

  • evermoore
  • · Replies 4 ·
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4

An object fired upward at a speed of 3.000 m/s

  • SpeedeRi2
  • · Replies 2 ·
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2

Calculating Cube Deceleration on a Moving Board

  • caseys
  • · Replies 2 ·
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2

Molecular Polarities and Physical Properties of Molecules

  • v22
  • · Replies 2 ·
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2

What do permeability and permittivity of free space mean?

  • garytse86
  • · Replies 3 ·
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3

How Does Center of Mass Influence Collision Outcomes?

  • envscigrl
  • · Replies 2 ·
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2

What Is the Ideal Length for a Half Wave Dipole Aerial at 120MHz?

  • Sanosuke Sagara
  • · Replies 2 ·
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2

An object travels in a straight line at a uniform velocity

  • SpeedeRi2
  • · Replies 3 ·
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3

Vectors around a circular track

  • seanlindo06
  • · Replies 2 ·
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2

Torque/acceleration with masses on pulley

  • vtech
  • · Replies 3 ·
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3

Probability that randomly chosen dogs are from the same state

  • OptimusPrime
  • · Replies 2 ·
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2

What'd I do wrong? [Angular Kinematics]

  • AERam
  • · Replies 2 ·
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2

How Do Forces Distribute Among Blocks on a Frictionless Surface?

  • jhson114
  • · Replies 2 ·
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2

Does the middle of the Earth spin faster than the outer part?

  • Me247
  • · Replies 2 ·
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2

Mass and Velocity in Elastic Collisions

  • tumbler19
  • · Replies 3 ·
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3

Distribution functions

  • buddingscientist
  • · Replies 4 ·
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4

Can VSEPR theory be used for ionic molecules like BeF2?

  • Tanya Back
  • · Replies 2 ·
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2

Electric field between -8.0 µC and +6.0 µC charges 4 cm apart

  • joej
  • · Replies 2 ·
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2

Calculating Revolutions/Minute for Centrifuge at 4.62 cm Radius

  • matchboxdude
  • · Replies 7 ·
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7

Electric Field and Potential of Thin Charged Metal Plates: Analysis and Sketch

  • stunner5000pt
  • · Replies 2 ·
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2

Finding clockwise and counterclockwise torques from a diagram

  • pinky2468
  • · Replies 2 ·
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2

Total distance traveled at 10 m/s for 3 seconds, then 5 m/s for 2 seconds

  • SpeedeRi2
  • · Replies 5 ·
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5

Young's Modulus/Breaking Point

  • Reisen
  • · Replies 1 ·
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1

Parallel Transport and Triangle Excess Angle

  • jimbo007
  • · Replies 1 ·
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1

Cartesian coordinates and in polar coordinates?

  • Poweranimals
  • · Replies 2 ·
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2
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2

Calculate max height and t in max height?

  • SpeedeRi2
  • · Replies 2 ·
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2

Particle deflection in magnetic field and charged ball entering field

  • kristi.lynn
  • · Replies 2 ·
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2

Newtonian Gravitation with an extended body

  • freemind
  • · Replies 7 ·
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7

Moments of Inertia, almost got it

  • sisigsarap
  • · Replies 4 ·
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4

How Do You Calculate the Speed and Deflection of a Wave on a String?

  • saksham
  • · Replies 2 ·
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2

Why is the force to lift a 52 kg crate only 260 N in a pulley system?

  • tony873004
  • · Replies 4 ·
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4

Ball Rise Trajectory: How Fast Was the Ball Moving?

  • UrbanXrisis
  • · Replies 3 ·
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3

How Can Physics Help in Making a Musical Instrument?

  • knowmad
  • · Replies 3 ·
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3

How to sketch and find the volume of a solid from an integral

  • Spectre32
  • · Replies 6 ·
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6

Ice Surfing: Solving the Physics of Motion

  • Chileboy
  • · Replies 2 ·
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2

Calculating Weight Changes in a Looping Plane

  • Tanya Back
  • · Replies 2 ·
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2

A car crashes into a concrete wall

  • envscigrl
  • · Replies 2 ·
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2

Acceleration due to gravity on the Moon

  • Mazdak
  • · Replies 2 ·
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2

Measuring coefficient of friction with only a ruler

  • freemind
  • · Replies 2 ·
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2

How Do You Calculate the Minimum Angle to Push a Mop Considering Friction?

  • newcool
  • · Replies 10 ·
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10

What is the tension in the string between two blocks with friction?

  • Mivz18
  • · Replies 8 ·
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8
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11

Isotopes/uncertainty in measurement

  • yxgao
  • · Replies 7 ·
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7

Egg drop landing pad with paper, straws, and styrofoam cups

  • acsokker
  • · Replies 7 ·
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7

Is (a × b) × c zero when c is perpendicular to both a and b?

  • Chen
  • · Replies 4 ·
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4

What are the intensity and wave properties of two simple wave problems?

  • saksham
  • · Replies 3 ·
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3

How Do You Solve a Frictionless Pulley System with Unequal Masses?

  • SnowOwl18
  • · Replies 2 ·
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2

Basic Physics - Spinning Head (mine)

  • PhysicsNovice
  • · Replies 9 ·
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9

Total force on a charge at the origin from three point charges

  • suf7
  • · Replies 42 ·
2
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42

Angular Displacement: Solving for a Mountain Bike Wheel

  • SnowOwl18
  • · Replies 5 ·
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5

Projectile motion with aerodynamic drag

  • guywinford
  • · Replies 3 ·
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3

Calculating Jet Engine Output of an Airplane

  • physicsss
  • · Replies 2 ·
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2

What is the speed of the space shuttle when a ball is dropped?

  • UrbanXrisis
  • · Replies 6 ·
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6

Calculate the position of the center of mass of the weighted wheel

  • physicsss
  • · Replies 2 ·
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2

Equations and explanation for wind car theory

  • alen
  • · Replies 6 ·
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6

Pre-Algebra Struggles: What Can I Do?

  • iownyou81
  • · Replies 2 ·
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2

Calculate stopping distance on level ground

  • Lannie
  • · Replies 2 ·
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2

Converting ρ(1-2cos²φ)=-ρsin²φ to cylindrical and rectangular

  • DeadxBunny
  • · Replies 2 ·
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2

What Angle and Normal Force Are Involved When Pulling a Suitcase?

  • jlshoop
  • · Replies 10 ·
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10

Determine the magnitude and direction of the resultant force

  • Kdawg
  • · Replies 2 ·
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2
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3

Solving Spring/Work Problem: Find Block's Movement on Incline

  • Fert
  • · Replies 2 ·
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2

Real numbers x and y, f(x+y)=f(x)+f(y)+1. If f(1)=2, what is f(3)?

  • Xasuke
  • · Replies 4 ·
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4
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12

Why Do My Calculations on Frictionless Hill Physics Seem Incorrect?

  • kimikims
  • · Replies 2 ·
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2

Final speed of 12-pack pushed 1.60 m with friction

  • rrastam
  • · Replies 2 ·
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2
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2

Net force on square loop from parallel current-carrying wire

  • vsage
  • · Replies 2 ·
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2

Propagation of errors? (lab phenomenon question)

  • StonieJ
  • · Replies 10 ·
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10

Vectory Geometry, problem involving spheres

  • josephcollins
  • · Replies 2 ·
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2

Finding GCD and LCM of 175 and 35 using prime factorization

  • dogma
  • · Replies 5 ·
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5

Power series approximation of ∫₀^(1/3) x² arctan(x⁴) dx

  • DivGradCurl
  • · Replies 3 ·
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3

Forces and centripital acceleration

  • benji
  • · Replies 2 ·
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2

What Is the Acceleration of Two Blocks in a Frictional System?

  • natalydj83
  • · Replies 2 ·
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2

Moment of inertia of a three-legged stool with disk and rods

  • BlackMamba
  • · Replies 3 ·
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3

Remainder bounds for series with ratio test conditions

  • DivGradCurl
  • · Replies 2 ·
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2

Struggling to Solve a Spring + Gravity Problem

  • underthebridge
  • · Replies 2 ·
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2

Calculating Potential Energy for 16 kg Object

  • strugglin-physics
  • · Replies 2 ·
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2

In terms of Einstein's theory of heat capacity

  • stunner5000pt
  • · Replies 2 ·
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2

Equilibrium Formula Derivation for Torque and Lever Systems

  • pinky2468
  • · Replies 2 ·
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2