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.
Does it make any difference that the Earth is not round?
  • phoenixy
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11
Understanding the Force of Buoyancy: Solving a Tricky Homework Question
  • esme
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3
One-Dimensional Kinematics: Height vs Time
  • rdn98
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2
Isothermal compression of monatomic gas ?
  • zaf
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5
Solving a Tension Problem with 9 kg Handing Weight & 5 kg Block
  • tristan_fc
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2
How High is the Coefficient of Static Friction for a Drag Car's Tires?
  • liljediboi
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5
How can I solve this tricky algebra problem from PHY404G?
  • amph1bius
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2
Calculating the Distance of L1 From Earth
  • StephenPrivitera
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2
Expressing a trig function as a complex expodential (HELP)
  • frankR
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6
Tidal Forces: Analyzing Comet Disruption by Planet w/ Mean Density > Comet
  • StephenPrivitera
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1
How High Does the Flowerpot Rise and How Long Must the Runner Accelerate?
  • Matthew
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2
Solve Dipole Layer Help: Electric Field Components Boundary Conditions
  • Norman
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2
What acceleration does Superwoman need to catch a falling person at 1000m?
  • thegreatone09
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2
Dynamics Problem: Calculating Tension in a Pulley System with Two Masses
  • deliveryman
  • · Replies 2 ·
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2
How to find the intensity of radiation
  • zaf
  • · Replies 5 ·
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5
What is the magnitude of the average acceleration of a skier
  • Mesmer17
  • · Replies 7 ·
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7
Solving a Bowling Ball Force Problem: Finding Weight and Acceleration
  • nerak
  • · Replies 3 ·
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3
Confused about Vector direction
  • Flaming Toilet
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2
Find Head of Vector [a,b,c] with Length 3 in Same Direction as [−3,−4,12]
  • PiRsq
  • · Replies 2 ·
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2
Solving Electric Field Boundary Conditions Across a Dipole Layer
  • Norman
  • · Replies 1 ·
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1
Calculating Time for Dog to Catch Jogger in Grade 11 Physics
  • thegreatone09
  • · Replies 3 ·
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3
Solving Physics Questions: Speed, Height & Time of Flight
  • tucky
  • · Replies 2 ·
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2
Finding Practical Applications for Physics/Calculus
  • apm809
  • · Replies 4 ·
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4
Will the Ball Land on the Ramp or the Plateau?
  • lizette
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2
How much time elapses before the motorcycle overtakes the car?
  • cowgiljl
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2
How Do You Calculate Horizontal Force and Tension in Physics Problems?
  • Aerospace
  • · Replies 7 ·
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7
Discover the Flow Velocity of a River with this Boat Trip Calculus Problem
  • pringless
  • · Replies 2 ·
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2
Aircraft Speed with Wind: Calculating New Velocity
  • pringless
  • · Replies 2 ·
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2
Homework: Stone Thrown Up 19.6m with 14.7 m/sec - Results
  • cowgiljl
  • · Replies 5 ·
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5
What Minimum Height Ensures a Marble Completes a Loop-the-Loop?
  • RIT_Rich
  • · Replies 3 ·
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3
What Calculations Determine When Two Accelerating Objects Cross Paths?
  • rdn98
  • · Replies 2 ·
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2
How Do You Calculate Net Torque with Multiple Force-Couple Systems on a Beam?
  • AngelofMusic
  • · Replies 1 ·
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1
Can P10-P12 Apply to Function Sets with Binary Operations?
  • StephenPrivitera
  • · Replies 12 ·
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12
Deal with tension problems in a systematic way?
  • StephenPrivitera
  • · Replies 4 ·
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4
Atwoods Machine - Mass Height Question
  • kashmirekat
  • · Replies 2 ·
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2
Proving Summation with Kronecker Delta and Levi-Civita
  • newton1
  • · Replies 2 ·
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2
How Do I Solve These Advanced Physics Problems for My Engineering Class?
  • merper
  • · Replies 9 ·
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9
What Does Each Element in a BLAST Protein Alignment Mean?
  • megga124
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Physics virgin is this how I do it?
  • noodle21
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2
Solving an Ice Cream Conundrum with Temperature Conversion and Salt
  • robbie
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2
Struggling with Math 30 Pure Transformations and Inverses? Get Help Here!
  • PhysicsRocks086
  • · Replies 2 ·
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2
3 Questions that have wracked my brain for two weeks
  • frdave20
  • · Replies 2 ·
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2
Domain: deceivingly simple, turns evil
  • StephenPrivitera
  • · Replies 6 ·
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6
Calculate Mass of Sand Grains for Equivalent Cube Surface Area - Physics Problem
  • rdn98
  • · Replies 2 ·
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2
Force Magnitudes, directions, gravity, etc (lost)
  • PianoMan
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2
How many dimensions are involved in these sports motions?
  • Inquiring_Mike
  • · Replies 5 ·
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5
Solving for Velocity: Common Mistakes and How to Get It Right Tonight
  • NINHARDCOREFAN
  • · Replies 15 ·
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15
How Does Braking Force Affect Amusement Park Ride Dynamics?
  • tucky
  • · Replies 2 ·
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2
Calculating Time for Cockroaches to Meet with Different Accelerations
  • chonny
  • · Replies 2 ·
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2
Calculating Heights and Acceleration: A Physics Question
  • Matthew
  • · Replies 2 ·
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2
How Do You Continue Expanding and Simplifying the Dot Product (2u+v)⋅(u-2v)?
  • PiRsq
  • · Replies 2 ·
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2
Tackling the Difficult Death Problem in Physics Honors Class
  • liljediboi
  • · Replies 5 ·
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Solving Kinematic Problems: Police Car Skid Marks
  • x_endlessrain_x
  • · Replies 5 ·
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Kinematics Problem: Cockroach Collision Calculation and Solution
  • chonny
  • · Replies 3 ·
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3
How Much Ballast is Needed for a Scale Model Sailboat to Float Properly?
  • sonya
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2
How Far Will a Box Slide with Initial Speed and Friction?
  • richk_83
  • · Replies 2 ·
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2
A microwave oven produces electromagnetic radiation
  • jlmac2001
  • · Replies 2 ·
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2
Need Help with a Physics Problem - Calculating Height of Falling Particle
  • Skyblitz
  • · Replies 3 ·
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3
How Can Linear Motion Equations Explain Particle Dynamics and Car Acceleration?
  • mcintyre_ie
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3
How does temperature affect the accuracy of a grandfather clock?
  • ki ki
  • · Replies 7 ·
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7
What is the speed of the particle after 9:01 s?
  • NINHARDCOREFAN
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3
What Is the Potential Energy at x = 2.0 m for a Particle Under a Variable Force?
  • Moxin
  • · Replies 4 ·
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4
How Does 3D Projectile Motion Apply to Throwing a Can from a Moving Car?
  • thegame
  • · Replies 8 ·
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8
What Is the Correct Expression for Velocity in Free Fall with Air Resistance?
  • pringless
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Proportional Resistive Force Problem
  • Nitrus
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2
Calculating Runner Distances at Flagpole with Constant Velocities
  • pringless
  • · Replies 2 ·
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Velocity and acceleration question
  • missrikku
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How Far Downstream Will the Swimmer End Up?
  • thegame
  • · Replies 2 ·
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2
Help with Linear Motion Questions: Acc, Velocity, & Speed-Time Graphs
  • mcintyre_ie
  • · Replies 3 ·
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3
Ok this is not a math or science question but i really with dis homework.
  • vadlamudit
  • · Replies 2 ·
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2
Solve Physics Problem: Jet Aircraft Launch from Carrier
  • prokoro
  • · Replies 2 ·
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2
Why is current given the symbol 'I' instead of 'C'?
  • NJones
  • · Replies 6 ·
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6
How High Above the Window is the Roof?
  • Melody
  • · Replies 2 ·
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2
Help with squaring geometry help
  • PiRsq
  • · Replies 4 ·
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4
Avg and instantaneous accel question
  • missrikku
  • · Replies 2 ·
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2
AP Chem, balance Redox equation
  • gigi9
  • · Replies 2 ·
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2
How far will it travel before it begins to fall to earth?
  • robbie
  • · Replies 2 ·
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2
Physics virgin on freely falling objects
  • noodle21
  • · Replies 2 ·
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2
AP Chem, balance Redox equation
  • gigi9
  • · Replies 2 ·
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2
Compute the focal length in air of a thin biconvex lens
  • jlmac2001
  • · Replies 2 ·
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2
Understanding Inverse Functions: How to Find f^-1(y)
  • sonya
  • · Replies 3 ·
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3
How Do Reflection and Curvature Affect Images in Optics?
  • jlmac2001
  • · Replies 2 ·
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2
Need help with 3d relative velocity h/w problem
  • dk702
  • · Replies 4 ·
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4
Calculating Equivalent Resistance in a Complex Circuit
  • discoverer02
  • · Replies 4 ·
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4
Projectile Motion and Angle: Solving for Optimal Launch Angle to Double Range
  • terryaki
  • · Replies 2 ·
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2
Solving an Inverse Problem with f(x)=5+2x+5e^x
  • sonya
  • · Replies 4 ·
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Calculating Average Acceleration on a Ferris Wheel
  • ffrpg
  • · Replies 2 ·
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2
Calculating Centripetal Acceleration of Stone
  • ffrpg
  • · Replies 2 ·
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2
Proving x+1/x >= 2 for x>0 in Math: Helpful Tips and Tricks
  • mercury
  • · Replies 2 ·
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2
Will Car A Collide with Car B After Deceleration?
  • mcintyre_ie
  • · Replies 2 ·
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2
Calculating Overtaking Time for Two Cars Accelerating Uniformly
  • LadyLexa
  • · Replies 4 ·
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4
Collision of Two Cars with Constant Velocity and Deceleration
  • mcintyre_ie
  • · Replies 3 ·
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3
Why Does a Car Traveling at Constant Velocity Still Do Work?
  • Cpt. Bob
  • · Replies 2 ·
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Calculating Tension Forces: A Beginner's Guide to Physics
  • barbieprincess87
  • · Replies 2 ·
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2
How Do You Solve a Two Spin-1/2 System with Coupled Hamiltonians?
  • kakarukeys
  • · Replies 6 ·
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6
How Do You Find the Inverse of a Function in Calculus?
  • sonya
  • · Replies 5 ·
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5
Discover Free Fall Equations & Solve for Time and Height | g = 9.8 m/s
  • pringless
  • · Replies 2 ·
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Does this involve calculus? im confused help please
  • pringless
  • · Replies 3 ·
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3
What Are Common Errors When Solving Complex Systems of Equations?
  • zeronem
  • · Replies 4 ·
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4
Calculating Acceleration with Spark Timers for Dynamics Cart Experiment
  • captain_planet
  • · Replies 5 ·
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5