Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
What Is the Electric Field Produced by a Uniform Line Charge on the x-axis?
  • Colts
  • · Replies 7 ·
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Need help finding coefficient of friction on an incline plane/pulley
  • bates.384
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1
How Do You Calculate Entropy Change in Thermodynamics Problems?
  • physninj
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6
Refractive index of different colors
  • MrEinstein
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4
How Fast Does Water Cool in a Polystyrene Box?
  • Undefeated
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4
Find wavelength, Phase Difference, and amplitude from min and max
  • rocapp
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Truss - ned someone to look through my calculations.
  • kaffekjele
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9
Relative population density of stars and galaxies
  • thornluke
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6
Calculating changes in stored energy of a capacitor
  • Pinedas42
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1
How Far Does a Baseball Travel with Zero Acceleration?
  • e=mcahhhh
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5
How Does A.H. Pfund's Method Determine the Refractive Index of Glass?
  • deltafee
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Wave function at origin on transverse wave
  • Saxby
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3
Calculation of the velocity of a Spaceship moving Relativistically
  • Owen-
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4
Energy transfer between two coupled masses
  • BareFootKing
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1
Optimal Flight Path for Eastward Destination with Wind Speed and Direction
  • CollegeStudent
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2
How Is Deuteron Kinetic Energy Related to Plasma Temperature in Nuclear Fusion?
  • jensgt
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3
Challenging High School Planetary Mechanics Problem
  • forcefrom
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5
Momentum Theory question Gr.12
  • elmosworld403
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1
Find the Exit Temperature of the Air in the Compressor
  • Northbysouth
  • · Replies 1 ·
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1
Need help with questions about Waves on a spring
  • ksuh
  • · Replies 1 ·
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1
How Do You Determine Position as a Function of Time from Acceleration?
  • MotoPayton
  • · Replies 12 ·
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12
Matter wave - relationship between broglie wavelength, wavelength
  • Deathnote777
  • · Replies 8 ·
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8
FBD representing a bird feeder.
  • physicsdude123
  • · Replies 1 ·
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1
Fourier Series Convergence for Square Wave Function
  • izen
  • · Replies 15 ·
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15
How far away from its location when the string breaks
  • riggi91
  • · Replies 2 ·
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2
Elastic Collision Between Two Masses
  • derravaragh
  • · Replies 2 ·
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2
Comparing thermo dynamic processes
  • icelated
  • · Replies 2 ·
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2
Find the Mass Flow Rate Through the Nozzle
  • Northbysouth
  • · Replies 2 ·
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2
How Fast Can an Insect Travel on a CD Without Slipping Off?
  • Inferior Mind
  • · Replies 1 ·
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1
What is the equivalent resistance of this circuit?
  • Saitama
  • · Replies 30 ·
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Finding acceleration and tension using Newton's laws
  • Mangoes
  • · Replies 2 ·
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2
Potential energy( electron moving away form proton)
  • whynot314
  • · Replies 3 ·
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3
Double Check My Answers: Calculating Projectile Motion with Initial Velocity
  • silentcoder
  • · Replies 9 ·
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9
Calculating Charge in a Concentric Spherical Region
  • Pruddy
  • · Replies 11 ·
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11
Center of Mass with Circle that has a Cut Out
  • SerhanFT9
  • · Replies 1 ·
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1
How Does the Incline Plane Affect Potential Energy in a Two-Mass System?
  • Larrytsai
  • · Replies 8 ·
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8
How Does Accretion Impact Galaxy Formation According to the IMF?
  • astrofunk21
  • · Replies 1 ·
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1
Relative velocity of river flowing
  • Toranc3
  • · Replies 4 ·
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4
How Fast Do the Spheres Move When Far Apart?
  • asheik234
  • · Replies 4 ·
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4
Uniform circular motion with constant upward velocity.
  • Toranc3
  • · Replies 8 ·
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8
What is the Vertical Velocity of a Rope Sliding off a Peg?
  • NewbieofPhysic
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2
Non-flow process with steam (Constant Pressure) Part II
  • freshbox
  • · Replies 9 ·
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9
How to Find the Y Component of the Electric Field Ey?
  • Triathlete
  • · Replies 4 ·
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4
Car and truck velocity question
  • vicsic
  • · Replies 5 ·
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5
Intensity through each power source
  • alexmath
  • · Replies 3 ·
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3
Particle in plane, find position vector
  • jklops686
  • · Replies 4 ·
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4
Projectile Motion: Solving for Velocity Components | Tower Launch
  • jklops686
  • · Replies 8 ·
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8
Kinematics, Newton's Laws, Fun With Engineers
  • tri5
  • · Replies 8 ·
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8
If you toss a tennis ball straight upward, shouldn't there be in horiz
  • cmkc109
  • · Replies 9 ·
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9
Fluid Mechanics: Compressible Fluids, density function
  • runningninja
  • · Replies 4 ·
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4
Ranking Voltages and Currents in a Circuit with 1 Capacitor
  • orangefruit
  • · Replies 1 ·
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1
Determining charge from electric potential
  • rmcgovern
  • · Replies 2 ·
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2
Non-flow process with steam (Constant Pressure)
  • freshbox
  • · Replies 42 ·
2
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42
Task with spring, energy, velocity and angle
  • DrOnline
  • · Replies 4 ·
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4
Coefficient of static friction on an inclined plane
  • hoges
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2
Calculate moment of a special wrench
  • jonjacson
  • · Replies 2 ·
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2
Flux due to infinite long wires
  • Saitama
  • · Replies 42 ·
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Applying Newton's laws to find forces
  • Mangoes
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8
Optics - Refraction and a transparent sphere
  • Saitama
  • · Replies 17 ·
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17
Using entry level physics to calculate minimum velocity required.
  • QuickSkope
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7
Deriving an expression from geometry
  • Levi Tate
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3
How Do You Calculate the Final Speed of a Rocket Car on an Inclined Ramp?
  • canucks81
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What Angle Does the Rocket Appear to Move at After the Second Stage Ignites?
  • student34
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Circuit with 2 batteries and 6 resistors
  • riane
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6
Circuits with two voltage sources
  • Chaso
  • · Replies 24 ·
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24
What is the average drag force on a softball pitched at 99.6 km/hr?
  • kopinator
  • · Replies 5 ·
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Equivalent electrical resistance
  • TheDoctor46
  • · Replies 6 ·
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6
How Do You Solve Spring and Force Calculations in Physics?
  • daveyboy157
  • · Replies 3 ·
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3
Calculating Period of Rotation for Mars-Bound Weight at 3.8 m/s2
  • HKfish
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Velocity in relation to position
  • destinc
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3
Deriving x(t) from work-energy theorem
  • autodidude
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2
Energy of a block on a frictionless ramp
  • geena_booboo
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4
Projectile Motion - confirmation on answer(s) needed
  • Element1674
  • · Replies 1 ·
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1
Force on air column in a solar updraft tower
  • Anoonumos
  • · Replies 1 ·
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1
Calculate forces on beam with hook
  • kaffekjele
  • · Replies 5 ·
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5
FBDs for Box and Magnet Lifting by a Rope Attached to Ceiling
  • cmkc109
  • · Replies 6 ·
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6
Finding the Tension in terms of weight and the angle of incline
  • Yosty22
  • · Replies 7 ·
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7
Problems from statistical mechanics
  • Nouf
  • · Replies 4 ·
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4
How Do You Calculate the Total Distance Traveled by a Car with Changing Speeds?
  • Gewitter_05
  • · Replies 1 ·
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1
Lens Object Screen Problem: Finding the Focal Length and Image Distance
  • Saxby
  • · Replies 2 ·
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2
Work done by E field to move electron from negative plate to postive.
  • whynot314
  • · Replies 3 ·
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3
Four 100 kg people are holding a 1200 kg inflated balloon
  • blueberryfive
  • · Replies 6 ·
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6
Linear acceleration with letters instead of numbers
  • Woolyabyss
  • · Replies 6 ·
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6
Adding the vectors ijk notation
  • CollegeStudent
  • · Replies 2 ·
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2
Thin rod symbolic questions based on Image.
  • Christian121
  • · Replies 4 ·
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4
Solving Truss Problems: Finding Unknown Forces | Learn Mechanics
  • dreamliner
  • · Replies 5 ·
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5
Are There Deficiencies in Newton's Laws?
  • Questions999
  • · Replies 2 ·
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2
Different equations for Electric Energy, me understand
  • Armand1
  • · Replies 3 ·
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3
Conservation of energy in standing wave
  • Saxby
  • · Replies 2 ·
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2
Is this correct? Newton's second law related.
  • Questions999
  • · Replies 6 ·
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6
Total energy stored in the electric fields, exess energy
  • Vaidotas151
  • · Replies 1 ·
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1
Solve Kirchoff's Problem: Find Current Across Resistor Network
  • Pork5
  • · Replies 3 ·
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3
Physics Electric Field Problem
  • asheik234
  • · Replies 7 ·
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7
Determine the potential energy of the configuration
  • Pruddy
  • · Replies 9 ·
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9
Block Jump from Ramp: Find Speed v
  • racecar12
  • · Replies 12 ·
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12
Calculating Centrifugal Force for a Bug on a Spinning Compact Disc
  • Robertoalva
  • · Replies 9 ·
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Wood-block Friction Launch Problem
  • Shaku
  • · Replies 12 ·
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Distance traveled using velocity
  • destinc
  • · Replies 4 ·
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4
Finding magnitude of x-component Electric Field due to a Line Charge
  • Arrhenius7991
  • · Replies 3 ·
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3
Oscillation / Soundwaves Question - Phase difference?
  • LadyMario
  • · Replies 7 ·
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7