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.
Calculating Center of Gravity with 58% Front Weight: Automobile Problem Setup
  • timtng
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How Do Two Astronauts Separate in Space After Pushing Each Other Apart?
  • cathliccat
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2
Rotating Wheel SHM: Piston Distance Calculation
  • shan
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3
How Do Forces Determine Tension and Compression in Roof Trusses?
  • exequor
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2
Solving 5 Quick Questions in Physics: Force, Mass & Acceleration
  • physicszman
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Can You Explain Conservation of Momentum?
  • porkok
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Q: Maximum weight for a suction cup hook on a glass door?
  • tucky
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Does viscosity affect the speed of waves in liquids?
  • Jacob Aron
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Calculating Lifting Force and Wing Size for an Airplane - Need Help!
  • celtchic
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How Can I Build a Non-Traditional Propulsion Car for a Physics Project?
  • starspin213
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How Fast Does the Heavier Cart Move After Spring Release?
  • marshall4
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2
Understanding the Doppler Effect in Physics: Explained and Solved Questions
  • andytran
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Finding Inflection Points (Applied Calc Question)
  • Sam
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2
Relative Velocity while swimming
  • mcintyre_ie
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2
Where is the center of gravity of this system?
  • timtng
  • · Replies 7 ·
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7
What Went Wrong with my Kinetic Energy Problem?
  • PiRsq
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2
How Much Torque Is Needed for a 2.0-kg Ball's Angular Acceleration?
  • Kroberts
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2
Can Physics Solve These Real-World Problems?
  • Nanabit
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2
Ballistic Pedulum - Finding Kinetic Energy Lost
  • ScoutFCM
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2
How Do You Calculate Revolutions in Rotational Kinematics?
  • djsharpsound
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2
Jet Transport Weight Distribution and Normal Force Calculation
  • PianoMan
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2
Moment of Inertia for a Solid Sphere
  • Norman
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2
How long does it take for a stone thrown from a building to pass a window?
  • coglon
  • · Replies 7 ·
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7
Solve the Bungee Physics Problem: Net Force and Height Calculation"
  • tandoorichicken
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5
Solve Parallax Equation: Find Distance to Star in km & ly
  • radius
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3
What is the student's speed at the bottom of the inclined plane?
  • ConfusedStudent
  • · Replies 7 ·
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7
What is the distance between two particles in motion in a vacuum?
  • joc
  • · Replies 21 ·
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How to solve momentum and collisions problems?
  • ScoutFCM
  • · Replies 4 ·
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4
Need help with velocity and accel. problem
  • beginner
  • · Replies 4 ·
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4
Calculating Bullet Velocity in Inelastic Collision
  • wessleym
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2
Calculate the acceleration of the cyclist
  • bonfire89
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Understanding the Purpose of Fuses in Electrical Circuits
  • Shyam
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5
Physics- falling objects, parabola shape
  • havechanged
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2
How Do I Solve These Angular Speed Physics Problems?
  • Nanabit
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2
How Do You Calculate Angular Acceleration with Only Velocity and Radius?
  • Nanabit
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2
Calculate the horizontal speed of the box as it falls
  • paigegail
  • · Replies 16 ·
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16
How Do You Calculate the Lifting Force on a Block?
  • kaotic
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2
What Does the Picture with Four E's and Arrows Mean on a Science Blackboard?
  • vadlamudit
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What Are the Best Botany Career Opportunities in Michigan?
  • Mentat
  • · Replies 4 ·
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4
Physics Puzzler: Solving a Grade 12 Cliff Pushing Problem
  • paigegail
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1
Understanding Transistor Concepts: Confusion with R1, R2, and IB
  • bottlesheep
  • · Replies 9 ·
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9
Fueling a Complete Game: Calculating Cereal Needs for Baseball Pitchers
  • LiquidIce
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2
How Do Particle Measurements and Dynamic Equations Impact Quantum Mechanics?
  • swoosh18
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2
How Does Dimensional Analysis Explain Standing Waves on a String?
  • Nb
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2
Moments of Inertia: Calculating R & Summing Values
  • StephenPrivitera
  • · Replies 13 ·
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13
Angular Momentum of an ice skater
  • timtng
  • · Replies 10 ·
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10
Calculating Distance of a Thrown Rock from a Building | Physics Problem Solution
  • yadda
  • · Replies 13 ·
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13
Redshifts and important early events
  • Math Is Hard
  • · Replies 1 ·
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Toboggan Physics Problem: Grade 12 Assignment Help | Work & Friction
  • Foon
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2
Submarine fluid physics problem
  • cathliccat
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2
What is the maximum acceleration a truck can have to keep a crate in place?
  • FLANKER
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Why Add 33º to the Force Direction in Pool Ball Collision?
  • shan
  • · Replies 6 ·
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6
Volume expansion and pressure change
  • fish
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6
How Do You Convert Torque from Pound-Feet to Newton-Meters?
  • ShakeWell
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Conservation of Momentum in a Two-Pendulum Collision
  • Eternal Ophidian
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Calculating Wave Velocity & Wavelength
  • timtng
  • · Replies 5 ·
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Solving Vectors: Boater Needs to Cross River at 20mph
  • tucky
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What Laws and Theories Predict Particle Motion?
  • daodude1987
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How Can You Calculate Gravity Using an Atwood Machine?
  • TroubledStudent
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2
Solving an E-Field Question: Magnitude of Electric Field Calculation
  • zath
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What are the forces and connections in this roof truss?
  • exequor
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What is the coefficient of static friction of rubber on wood?
  • marshall4
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What Is the Velocity of the Third Piece After the Ball Explodes?
  • DrVirus
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Calculating Rocket Height with Changing Mass: Guide & Tips
  • lastlaugh
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Does dropping a rock or catching a fish affect water displacement in a pond?
  • TigerLilly
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Torque on a current-carrying loop
  • gnome
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Completely inelastic collisions
  • marshall4
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Can Calculating Real Coefficient of Friction Solve Loop-the-Loop Lab Variance?
  • faust9
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Half-Life Phenomena: Comparing to Hot Coffee
  • barcat
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Artillery gun projectile motion problem
  • Trigun
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Solving Power Equation & Compressing a Spring
  • ACLerok
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Calculate Time for Mass to Reach Equilibrium Position
  • timtng
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Calculate Particle's Speed in SHM with Period of 2.4 s and Amplitude of .1 m
  • timtng
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Ball of mass 450g lands on a spring with k = 5.0E3
  • DrVirus
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2
How Do You Calculate the Final Velocity of a Ball Rolling Down a Sloped Roof?
  • aerichk
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2
Differences between the magnetic field B and the field H
  • Beer-monster
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Potential Energy, Conservation of Energy problem
  • pezzang
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Need Help Solving AP Physics Problems?
  • pezzang
  • · Replies 5 ·
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Does the period or frequency represent an orbit?
  • marshall4
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Calculating Friction Force: Static and Kinetic Coefficients Explained
  • wachaif
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2
How Do You Calculate Mass and Spring Constant from Oscillation Period Changes?
  • izmeh
  • · Replies 5 ·
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Suggestions for projectile motion
  • exequor
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How many earth years is Jupiter's orbit around the sun?
  • marshall4
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Proving Integral of sin(θ) - cos(θ) = -(1/2)ln(2sin(2θ)+2)+C
  • mattmns
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3
Solve Momentum Problem: Boat's Final Velocity
  • Hyperreality
  • · Replies 3 ·
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Conservation of Energy of a bullet
  • BeefyBeef
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Will a Bullet Shot Straight Up Fall Back to Its Starting Point?
  • porkok
  • · Replies 11 ·
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Solving the 8kg-5kg Pulley System: Calculating Acceleration & Time
  • cowgiljl
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Centripetal Force of merry-go-round
  • nautica
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How Is Centripetal Acceleration Calculated in Astronaut Training Centrifuges?
  • Nb
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How Much Energy Can a Custom Car Capacitor Store?
  • star2003
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Maximum Brick Stacking Height: Investigating the Compression Strength of Bricks
  • nautica
  • · Replies 2 ·
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Calculating Energy of a Conduction Band Electron in Silicon
  • NPFD
  • · Replies 4 ·
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Help with Linear momentum problem
  • missrikku
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What formula would I use to find the horizontal force?
  • slyguy
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Energy conservation on a roller coaster
  • Yaqout
  • · Replies 2 ·
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Finding Mass with a Lever: A Scientific Approach
  • deuterium
  • · Replies 2 ·
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How Do You Calculate Power and Work in Physics Problems?
  • ACLerok
  • · Replies 5 ·
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5
How would you solve f(t)=1+t with -pi<x<pi?
  • hawaiidude
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Projectile Motion Problem: Bowling Ball Drop and Car Distance Calculation
  • nummytreat05
  • · Replies 2 ·
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