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.
Periodically Dampened Oscillator
  • Squire1514
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Forces in Pulleys: Gr 12 Physics Help for Gary
  • Gbarretto23
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2K
A Marble Rolls Around a Circular Cone - Diagram
  • tg22542
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6K
Electrical Energy Dissipation Across Resistors
  • Yosty22
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5
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13K
Energy math question - Energy to melt lake ice sheet
  • courtneywetts
  • · Replies 20 ·
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20
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7K
SIMPLE and somewhat fun questions I need answers for
  • noobphysicist
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3
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2K
Tangent Lines/Instaneous Velocity
  • pebbles3
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8
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3K
Force required to maintain Equilibrium
  • member 392791
  • · Replies 16 ·
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4K
Friction on a casing on a metal ring
  • Victarion
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4
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How Do You Calculate Average Speed in a River with a Current?
  • physicsnobrain
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22
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How to calculate tension in a rope?
  • BEECHBOY707
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Energy spent by motor in a period
  • bznm
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Fluid pressure question in US units
  • freshman2013
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4K
Can You Solve This Physics Problem About a Cannon, a Cliff, and a Moving Ship?
  • Cassomophone
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Determine force angles so that acceleration is least
  • MrMoose
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4
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Ball Trajectory: Solve for x(t) & y(t) & y(x)
  • majinsock
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Help Motion of a Ball Physics Homework
  • lulu234
  • · Replies 10 ·
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10
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Calculating Average Velocity from Acceleration?
  • SonnyBoy
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Phys Chem Heating water with electric current
  • speny83
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1
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Calculating Heat Absorbed & Estimating Power Rating of Electric Heater
  • KevinO
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4
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Calculate zenith distance given latitude and time of year?
  • EzrealAsItGets
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Doppler effect with 2 sound sources
  • papanik
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3
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3K
Velocity to acceleration then conversion from km/h to m/s2 confusion
  • survivorboiii
  • · Replies 15 ·
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5K
Draw a diagram of all the forces acting on block A.
  • spriteboost
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3
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6K
0N/C Electric Field at center of equilateral Triangle
  • Painguy
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2
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Centripetal Acceleration of amusement ride
  • hsphysics2
  • · Replies 9 ·
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9
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3K
Homework Help based on the equations of motion
  • risingabove
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3
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What Constant Acceleration is Needed to Safely Pass an RV on a Two-Lane Highway?
  • Kot
  • · Replies 13 ·
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13
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3K
Finding the distance a satellite travels. Help
  • astru025
  • · Replies 11 ·
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11
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6K
How do I determine the appropriate drag force equation for my problem?
  • iScience
  • · Replies 6 ·
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6
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18K
Vector/Relative Motion Questions
  • zak.hja
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1
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2K
Calculating an Intercept Course for a Coast Guard Speedboat
  • lazyykid
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2
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4K
Ap physics gravitational force on satellites. Any help appreciated
  • astru025
  • · Replies 16 ·
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16
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4K
Free fall, hit the target, projectile problem
  • annakwon
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1
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2K
Finding Height With Projectile Motion
  • Slovan
  • · Replies 10 ·
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10
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4K
How to Distribute Weight on a Table with Four Legs?
  • aaron94116
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2
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5K
Running and Location/Distance Question
  • physicsnobrain
  • · Replies 19 ·
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19
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3K
Vector / Relative Motion Problem
  • jambliduo
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1
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Kirk's Mission: Solving for Acceleration Time
  • fogvajarash
  • · Replies 10 ·
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10
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Mastering the Cup-and-Ball Physics Problem in First Semester Kinematics Class
  • scozzy
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2
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6K
Capacitor charge in series and parallel circuit
  • Joshb60796
  • · Replies 3 ·
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3
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7K
Can you check this? - Charges and Forces
  • Albeaver
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1
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2K
Spring constant in mass spring combinations
  • mrcotton
  • · Replies 2 ·
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2
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Work done on condensing steam in a piston
  • mettw
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Electrostatics problem - accelerations of charged beads
  • OckhamsHammer
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3
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Mass attached to lower of 2 identical springs
  • bfusco
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Flux calculation using Gauss’s Theorem
  • manayay
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Finding A Vector Position Function For Projectile Motionh
  • Bashyboy
  • · Replies 20 ·
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Possible Physics Projects Involving Photosynthesis and Respiration?
  • chipotleaway
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Dropping Package Homework: Newton's 2nd Law & Position in Flight
  • Bashyboy
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Michelson interferometer average power derivation
  • leroyjenkens
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Find Angle of Projectile: Golf Ball 50m High & Away
  • physicsnobrain
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Calculating Charge on a Parallel Plate Capacitor with Changing Distance
  • jaydnul
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Projectile Motion Calculation: Finding the Landing Distance of a Launched Object
  • physicsnobrain
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Projectile Problem: Solving Theta given Delta X, Delta Y and V0.
  • Marven345
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Finding Final Velocity & Displacement
  • golbez22
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Checking Speed/Velocity Porblem Answers
  • Medgirl314
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Kinematics in 1D. I with setting up the question
  • hey123a
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Electric Potential due to multiple charges
  • irivce
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What is the Gravitational Force on Two Satellites Circling Earth?
  • astru025
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How Do You Calculate Electric Field at Multiple Points Between Two Charges?
  • danish1991
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Reynolds number and drag coefficient of a cylinder
  • ngc2024
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How Does Gauss's Law Apply to a Uniformly Charged Sphere?
  • yaro99
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How Does Block 1's Acceleration Compare to Block 2's in a Dual Pulley System?
  • ashrafi
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Initial velocity of home run hit
  • Kr.m.h.
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Constant velocity and turning around
  • fogvajarash
  • · Replies 16 ·
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A simple rotational motion question
  • nil1996
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Checking Speed and Velocity Problems
  • Medgirl314
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2
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Find angular momentum, energy, and distance of closest approach
  • oddjobmj
  • · Replies 30 ·
2
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How Do I Solve Kirchhoff's Loop Rule Problem in MATLAB?
  • lee_sarah76
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6
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3K
What Is the Net Electric Flux Through Each Closed Surface?
  • yaro99
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1
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Easy 3d Moment with Couples question, Scalar approach.
  • Willjeezy
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4
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Atwood Machine: Acceleration of m1
  • thatguy101
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How Is Velocity and Acceleration Affected as a Carousel Slows Down?
  • studentofphy
  • · Replies 3 ·
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Moment of a pole of unknown height
  • PensNAS
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Object Thrown from building help
  • xtrubambinoxpr
  • · Replies 11 ·
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Bernoulli, Gauge pressure in hose?
  • kogai
  • · Replies 4 ·
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4
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8K
Simple? Motion Equation Problems
  • harujina
  • · Replies 4 ·
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4
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2K
What is the work done by a spring on a block at various positions?
  • shawn14parker
  • · Replies 6 ·
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6
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14K
How Do You Calculate the Numerical Aperture of This Optical System?
  • Aelo
  • · Replies 10 ·
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Dimension Analysis: α,β in x=α+(2/3)βt^(3/2)
  • studentofphy
  • · Replies 7 ·
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7
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2K
How Do Velocity and Acceleration Vectors Behave in Projectile Motion?
  • physicsnobrain
  • · Replies 6 ·
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6
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Find Mass M1 Given Acceleration, Angle, and Friction
  • thatguy101
  • · Replies 7 ·
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Electic Flux through a cube Why am I getting a value?
  • Tautomer22
  • · Replies 2 ·
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One-dimensional dynamics question
  • Ascendant78
  • · Replies 2 ·
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Find F2 on a particle given velocity vector and F1 vector
  • MrMoose
  • · Replies 7 ·
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7
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Figure out how far up the incline of the hill the box slides.
  • jumbogala
  • · Replies 2 ·
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Calculating Electric Flux in a Nonuniform Field: A Cubic Box Example
  • kopinator
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4
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Initial Speed and Projectile Motion
  • Rubber Ducky
  • · Replies 4 ·
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4
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4K
Drag on a marble shot through water
  • oneamp
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6
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9K
Finding the Optimal Aperture Stop for a Portrait Photo
  • Aelo
  • · Replies 1 ·
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1
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Free fall, hit the target, projectile problem
  • annakwon
  • · Replies 3 ·
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3
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5K
Can You Calculate the Landing Point of a Ball on a Roof?
  • jutman1776
  • · Replies 5 ·
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5
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3K
Mass on inclined plane, string has mass
  • deekin
  • · Replies 5 ·
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5
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6K
Introductory Quantum Physics/Mechanics Homework Help
  • Astronomer1
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2
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2K
How Do Friction and Normal Force Act on a Rod at an Angle?
  • nil1996
  • · Replies 1 ·
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1
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2K
Calculating Frequency of Vibration for 0.3kg Mass Suspended from 200Nm Spring
  • brenfox
  • · Replies 1 ·
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1
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2K
Torricelli/bernoulli physics homework
  • Lairreiy
  • · Replies 5 ·
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5
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Question about surface area/ volume
  • DevPhysics
  • · Replies 7 ·
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7
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3K
Circular Motion with constant angular acceleration
  • anhchangdeptra
  • · Replies 5 ·
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5
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2K