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.
How Far Can a Golf Ball Travel at 30° on a Level Course?
  • mrkidd1k
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Vector Components Homework: Find Displacement for Bob to Return to Start Point
  • ch2kb0x
  • · Replies 3 ·
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3
Contact Forces with a Massless String
  • Inertialforce
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3
Projectile Motion - Horizontal Launch
  • bkoiskewl1
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7
How Do You Calculate Distance When Velocity Changes?
  • bigzee20
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7
Why Do Spring Constants Vary With Different Calculation Methods?
  • mike115
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2
Design an expiriement/lab/activity related to Heisenberg Uncertainty Principle
  • CooZa
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Super quick question on spring and energy conservation
  • I_LoveCasey!
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Calculating Man's Northward Distance Traveled with Vector Components
  • ch2kb0x
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1
Compton Collision: Photon & Electron 180° Scatter, 30keV Energy
  • Quelsita
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Persistance of screen glow/image on the eye HELP
  • iamamn
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1
Three bys trying to balance a seesaw
  • Naldo6
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Calculate the moment of inertia of a uniform solid cone
  • ehilge
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2
What is the potential energy of an electron
  • Foxhound101
  • · Replies 6 ·
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6
New Angular Velocity of Star with Diameter Shrink to 0.17 Times
  • Naldo6
  • · Replies 3 ·
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3
Cannon shot on airless planet with x gravity
  • Mugen112
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1
Work Up an Incline: Calculate Gravity, Friction & Push Work
  • keemosabi
  • · Replies 3 ·
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3
How Do You Calculate Initial Bullet Speed in a Ballistic Pendulum Scenario?
  • rbrow039
  • · Replies 1 ·
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1
How Do You Calculate Electric Potential Near a Proton?
  • shinobi12
  • · Replies 1 ·
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1
Calculate the work done by the frictional force
  • Bones
  • · Replies 16 ·
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16
How Do Lorentz Transformations Affect Measurements of Time and Distance?
  • Frillth
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1
Why Does My Satellite Orbit Calculation Not Match the Expected 1.8 Hour Period?
  • smw1016
  • · Replies 1 ·
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1
Solve Momentum Puzzle: Recoiling Cannon
  • Awwnutz
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1
Can You Solve This 2D Equilibrium Problem with a Pirate on a Plank?
  • Oblivion77
  • · Replies 2 ·
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2
Which Set-up Has Greater Acceleration?
  • Robershky
  • · Replies 7 ·
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7
What is the Elevator's Acceleration Direction When the Scale Reads Higher?
  • Quincy
  • · Replies 8 ·
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8
Neutron-Atom Collision: Energy Transfer
  • bgil1989
  • · Replies 1 ·
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1
Solve Free Falling Motion Homework: Traveled in 3rd Sec of Fall
  • wheeljeeper
  • · Replies 2 ·
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2
How Do You Calculate the Tension in Cords with Varying Angles and Loads?
  • anteaters
  • · Replies 3 ·
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3
Conservationof energy and angular speed
  • CornMuffin
  • · Replies 6 ·
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6
How Fast Is a Ball Rolling Down an Incline After 1.50 M?
  • Naldo6
  • · Replies 2 ·
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2
Direct Current Circuits and automobile battery
  • blakmamba619
  • · Replies 8 ·
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8
How Far is the Spring Compressed by the Sliding Block?
  • Bones
  • · Replies 18 ·
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18
How much energy does it take to climb stairs?
  • uno
  • · Replies 2 ·
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2
Displacement from angle and initial velocity
  • Planefreak
  • · Replies 1 ·
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1
Why Does Kinetic Friction Apply When a Box Starts Sliding Down an Incline?
  • fishingspree2
  • · Replies 1 ·
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Centripetal acceleration question
  • physics_geek
  • · Replies 4 ·
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4
I have questions about circular motion. help would be really appreciated
  • sarahxesia.
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1
AZING! Can a 56Fe Nucleus Fission into Two 28Al Nuclei Spontaneously?
  • fredrick08
  • · Replies 4 ·
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4
Calculating Initial Velocity of a Projectile Using Free Fall Equations
  • a18c18
  • · Replies 9 ·
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9
Solve Newtons Laws Problem: Find Acceleration & Force
  • iluvphys
  • · Replies 9 ·
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9
How Many Sodium Atoms Remain in the 3p State After 10ns?
  • fredrick08
  • · Replies 3 ·
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3
How Do You Solve Complex Astrophysics Calculations?
  • smw1016
  • · Replies 4 ·
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4
Work: Pulling a crate attached to a rope
  • TJDF
  • · Replies 7 ·
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7
What is the Speed of The Rocket at the Carnival?
  • splac6996
  • · Replies 11 ·
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11
What is the Impedance of a Particular Inductor with Appreciable Resistance?
  • Kris1120
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2
Determining the magnitude of the charge (Coulombs Law)
  • meeklobraca
  • · Replies 17 ·
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HELP a question on angular velocity
  • Kudo Shinichi
  • · Replies 3 ·
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3
How Do You Calculate Impedance in a Series RLC Circuit?
  • Kris1120
  • · Replies 2 ·
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Calculating Minimum Angular Velocity for Rotor Carnival Ride | Dynamics Problem
  • Kudo Shinichi
  • · Replies 4 ·
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How do I use Gauss's Law to calculate proton trajectories in an electric field?
  • Gaara09
  • · Replies 6 ·
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6
Electric Field from Gaussian Pillbox of Thickness 2d & Uniform Charge Density ρ
  • indigojoker
  • · Replies 9 ·
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9
Concept Questions regarding Work
  • TJDF
  • · Replies 1 ·
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How Do You Solve a 3D Moment Problem?
  • ricky_fusion
  • · Replies 6 ·
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Free body diagram (centripetal force)
  • dnt
  • · Replies 6 ·
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Kinetic Friction To Find Acceleration
  • tater08
  • · Replies 7 ·
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Gauss's Law long thin wire question
  • TFM
  • · Replies 38 ·
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Board pulled out from under a box
  • aligass2004
  • · Replies 5 ·
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5
How Is the Maximum Energy Transfer Determined in a Photon-Electron Collision?
  • Quelsita
  • · Replies 1 ·
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Normal distribution (Physics Lab)
  • Oerg
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Finding the coefficient of kinetic friction and work
  • leafeater47
  • · Replies 2 ·
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Help with microwave oven standing waves problem
  • strugglingstu
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How to measure the intensity of Infra red
  • MMorris
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Acceleration as a Function of Distance
  • bollocks748
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Centripetal Acceleration and Tangential Acceleration problem driving me crazy
  • roflawlz
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Why Does My Spin Chain Energy Calculation Differ from the Textbook?
  • jorgen
  • · Replies 1 ·
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Compressed Air Bottle Rocket (Variable Mass)
  • Aftermarth
  • · Replies 5 ·
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Simple Harmonic Motion Question
  • theneedtoknow
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Visible Light: Wavelength & Frequency
  • Gear300
  • · Replies 5 ·
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5
What is the impulse delivered by the floor in a 2D bounce pass?
  • xthursday
  • · Replies 1 ·
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Confused about force/impulse/acceleration
  • lmlgrey
  • · Replies 1 ·
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1
Finding the horizontal distance that the cork flew
  • jheld
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Does the maxima separation remain constant for all values of m?
  • tony873004
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Kinetic Energy: Calculating with a Bowling Ball
  • Naldo6
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Solving Newton's 3rd Law Homework: Magnitudes of Contact Forces
  • anteaters
  • · Replies 1 ·
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Calculating Magnetic Field with Helmholtz Coils
  • sheri1987
  • · Replies 1 ·
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Angular Aceleration of Cilynder
  • Naldo6
  • · Replies 2 ·
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Webpage title: Calculating Forces on a Moving Box with a String at an Angle
  • veronica_pr
  • · Replies 1 ·
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Solve Kinematics: Find Time of Fall for Object Dropped at 12 m/s
  • babyblue
  • · Replies 2 ·
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Velocity/Acceleration/displacement Help
  • austin1250
  • · Replies 4 ·
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Solving the Pendulum Problem: An Overview
  • tapeworm
  • · Replies 3 ·
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Finding Acceleration & Tension in a Frictionless Pulley System | Homework Help
  • nns91
  • · Replies 25 ·
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Angular Velocity of a neutron start
  • big time
  • · Replies 1 ·
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The pushed box with kinetic friction and an inital speed
  • NastyAccident
  • · Replies 1 ·
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1
Calculating Average Force in a Ball Rebound Momentum Problem
  • lmc489
  • · Replies 1 ·
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An equilateral triangle w/3 =forces, 1/side,why is sum of torques always= at any pt?
  • mistymoon_38
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Projectile motion beer slide problem
  • haydn
  • · Replies 4 ·
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Calculating Tension in Multiple Cords for Suspended Object - 250N Weight
  • aligass2004
  • · Replies 12 ·
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DIFFRACTION PROBLEM (physics lab)
  • mjsteves
  • · Replies 1 ·
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Determining the static and kinetic coefficients on an incline of wood on wood
  • cmcc3119
  • · Replies 1 ·
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Acceleration due to Gravity: calculate initial velocity
  • Archedcutie
  • · Replies 3 ·
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Help With *Simple* Projectile Motion Problems
  • shoez
  • · Replies 2 ·
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Induced emf in secondary coil - help
  • jcvince17
  • · Replies 14 ·
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Centripetal Acceleration Space Shuttle Problem
  • C^2
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Comparing Impulse in Collisions: Which Ball Experiences a Greater Magnitude?
  • kallisti
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Calculating the Force Needed to Lift a 700 lb Car with a Hydraulic Jack
  • designer rose
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Average force the floor exerted on the ball
  • Sinusoidal
  • · Replies 1 ·
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Finding acceleration on a slope
  • jchipwpunj
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Calculating Acceleration on a Sloped Surface
  • jnalli121
  • · Replies 3 ·
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Calculate Power of 50 kg Boy Running Up 10 m in 7 s
  • omgitsmonica
  • · Replies 2 ·
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