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.
Finding height using Conservation of Energy
  • Kajayacht
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6K
Work and force (my answers keep being wrong please someone explain)
  • bubba640
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1
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3K
How Do Rotational Transformations Affect Coordinates?
  • Fusilli_Jerry89
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3
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2K
Zoroaster Planet Escape Speed Calculation for Meteor Collision
  • ~*Noor*~
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1
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4K
Finding Resultant Force: Calculation and Explanation
  • rahul222
  • · Replies 31 ·
2
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31
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5K
How Does Magnetic Field Strength Affect Ion Trajectory in a Mass Spectrometer?
  • k4s11
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6K
Coefficient of kinetic friction between the crate and the floor?
  • jillgotcher
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3
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17K
Capacitors With and Without Dielectric
  • jchoca
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1
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3K
Projectile Motion given angle and distance, find intial velocity
  • ScullyX51
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5
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39K
Bus Speed Needed to Coast to Top of 0.88m Hill - Homework Solution
  • Kajayacht
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3
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2K
Cable Car and Counterweigh- A Problem of Tension, Friction, and Kinematics
  • Phoenixtears
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6
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7K
3 Blocks Create a Tension Force- Find Acceleration
  • Phoenixtears
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4
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6K
Pushing Crate up Frictionless Slope Find Work
  • Spartan Erik
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2
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5K
Calculating Initial Velocity Needed to Reach Specified Height
  • goombachu
  • · Replies 6 ·
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6
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35K
How Does a Climber Use Friction to Stay Stationary?
  • WoArt
  • · Replies 2 ·
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2
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2K
Simple average speed (quick glance should do the trick)
  • mbisCool
  • · Replies 2 ·
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2
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3K
Deriving Potential Energy and Variance in a Simple Harmonic Oscillator
  • mhellstrom
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6
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3K
Mass and Radius of a Planet given v
  • chitoboy18
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1
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8K
Pulling a sled - find friction & force exerted on puller
  • BoogieBot
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1
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7K
Calculating the Speed of a Dropped Rock on Mars
  • kmiller
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3
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4K
What causes constand acceleration?
  • tcjeremy
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2
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4K
Given height find how fast its moving
  • kmiller
  • · Replies 6 ·
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4K
Two-Dimensional motion components
  • wallace13
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3
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2K
Motion and force along a curved path-angle of curves?
  • a18c18
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1
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6K
Calculus based physics problem. (energy and fricition)
  • oohaysomeone
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1
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5K
Simple Torque Problem With Picture, Help
  • raven2783
  • · Replies 6 ·
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6
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4K
Calculating Potential Energy Changes in a Hanging Mass and Glider System
  • tippetmaster
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4
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4K
Mechanics question on dropping soldiers
  • leyyee
  • · Replies 5 ·
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5
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3K
Motion and force along a curved path
  • a18c18
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1
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4K
Block on Spring without Friction
  • Awwnutz
  • · Replies 3 ·
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3
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2K
Finding Al's Mass in a Momentum Problem
  • JSmith89
  • · Replies 4 ·
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4
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2K
Spring constant discrepency (force vs work)
  • krausr79
  • · Replies 4 ·
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4
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6K
Work to push a sled up a hill: Friction, inclines,force,work
  • krausr79
  • · Replies 2 ·
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2
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23K
Calculating Soccer Ball's Speed at Goalie's Catch
  • whyorwhynot
  • · Replies 4 ·
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4
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19K
How Does a Swimmer Navigate a River with a Current?
  • tphy_08
  • · Replies 3 ·
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3
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5K
Calculating Tire Radius Given Mass, Friction & Velocity
  • lalalah
  • · Replies 4 ·
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4
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10K
What is the minimum angle for box to start slipping?
  • anubis01
  • · Replies 3 ·
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3
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5K
Free Body Diagrams & 3rd law pair forces.
  • JasonS
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1
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5K
Maximum amount of energy that can be released as heat and sound
  • DocZaius
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2
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3K
Trigonometry or components to find the displacement
  • ScullyX51
  • · Replies 2 ·
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2
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12K
Analyzing 2-Lens System: Image Position, Magnification & Nature
  • anizet
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1
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3K
Solving a Spring-Block Problem: Find V,H
  • myk127
  • · Replies 6 ·
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6
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2K
How Does Relative Velocity Affect a Swimmer's Path Across a River?
  • confusedguy87
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1
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3K
Understanding Friction: A Systematic Approach to Solving Problems
  • ritwik06
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4
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2K
Calculating Acceleration and Tension on an Inclined Plane with Friction
  • nvictor
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4K
Interfence with reflected sound
  • sanado
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2K
What is the Average Acceleration of a Car Striking a Tree at 90 km/h?
  • Gustason
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Acceleration given velocity and distance
  • swede5670
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4K
What is the acceleration of the elevator?
  • Abb
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4
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Forces and friction, moving a crate
  • mg0248
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4K
What Is the Joule Thompson Effect and How Is It Calculated for Different Gases?
  • Snoop06
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7K
Friction/Kinematics Question. Conveyor Belt.
  • swooshfactory
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11K
Gravitational Field Strength Help
  • shootingrubbe
  • · Replies 3 ·
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3
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4K
How Do You Calculate Initial Velocity with Kinetic Friction?
  • ayreia
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2
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8K
How to Calculate Coefficient of Kinetic Friction in a Block-Spring System
  • Awwnutz
  • · Replies 9 ·
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4K
Solve Block and Friction Problem: Get Tips & Help Now
  • physics_learn
  • · Replies 7 ·
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7
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2K
Projectile Motion and Velocity Problem
  • maniacp08
  • · Replies 29 ·
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29
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7K
Solving Bullet Train Speed Change Problem
  • physics_learn
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Calculating Cable Car's Speed on Hill Descent - 4122N Braking Force
  • bluebear19
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How Do I Solve These Challenging Physics Problems?
  • uno
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Calculating Energy in a Box with a Flashlight
  • andrewm
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Magnetic Field and electron beam
  • strawberrysk8
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Discovering Relativity: Calculating Spaceship Speed and Separation
  • esb08
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Spacecraft Acceleration Question
  • Lokhtar
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1
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What Formula is Used for Part B of the Elephant and Hydraulic Lift Problem?
  • jason_r
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3K
Kinetic Theory of Gases & Escape Speed
  • emperrotta
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Fringe Radius Relation for Small Times t
  • Ciato
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Circular Motion, Velocity at top/bottom question
  • swooshfactory
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4K
How High Does the Child Become Airborne on a Slide?
  • hsbc2003
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2
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4K
How Do You Calculate Trip Duration and Distance with Stops and Average Speed?
  • aquapod17
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Tension or Compression: Determining the Forces on a Hinged Support Point
  • tonald
  • · Replies 5 ·
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Skydiver's velocity with retarding forces
  • rpcarroll
  • · Replies 7 ·
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7
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5K
How Quickly Can a Train Accelerate on a Curve Without Exceeding Comfort Limits?
  • quantumlight
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3K
Solving Kinetics Questions: Two Cars Traveling on a Highway
  • aquapod17
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DE: Sound more like an algebra problem :x
  • rocomath
  • · Replies 2 ·
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2
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2K
Do Electricians Avoid Using High Resistance Wires for Household Wiring?
  • Nuha99
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How many people can the raft hold physics problem
  • Elvis
  • · Replies 3 ·
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3
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4K
Why Does the Scale Reading Change in an Elevator?
  • joe215
  • · Replies 1 ·
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1
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Finding Potential Difference Vab in Parallel Circuits
  • kushal18
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4
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Kinematics, given only vi vf and d
  • Omnistegan
  • · Replies 4 ·
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4
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3K
Calculating Electron Speed in Potential Difference of 25.0 V
  • strawberrysk8
  • · Replies 7 ·
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7
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7K
Ranking tension in different crates
  • I_LuV_FiZiX
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1
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8K
Projectile motion (one try left, 2 hours to complete)
  • I_LuV_FiZiX
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1
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3K
Heat - What is the temperature of this object?
  • MIA6
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2K
What Happens to the Bananas When a Monkey Climbs the Rope?
  • joe215
  • · Replies 1 ·
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1
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3K
What is the Mass of the Suspended Block in a Two-Block Pulley System?
  • xmflea
  • · Replies 12 ·
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12
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10K
Kinematics Test Question: Can You Solve This Sheriff and Robber Pursuit Problem?
  • zach5681b
  • · Replies 2 ·
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2
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5K
This question is driving me nuts. (counter-balancing forces)
  • Leid_X09
  • · Replies 10 ·
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10
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4K
What Are the Frequencies of the First Two Overtones in a Closed Air Column?
  • Exhonour
  • · Replies 1 ·
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1
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3K
Solve Drag Force Problem: Find Time to Reach 2% of Orig. Speed
  • Symstar
  • · Replies 9 ·
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9
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13K
Friction Coefficients and Minimum Normal Force
  • Sligh
  • · Replies 2 ·
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2
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4K
Does Acceleration Affect Weight Readings?
  • I_LuV_FiZiX
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1
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2K
Find Net Force of 2.5x10^5N Training Helicopter
  • xmflea
  • · Replies 1 ·
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1
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4K
Friction problem, getting started
  • maniacp08
  • · Replies 6 ·
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6
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3K
How do you find Acceleration when given Distance and Time?
  • Johnny56
  • · Replies 3 ·
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3
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116K
How Do You Calculate Relative Velocity Between Two Moving Cars?
  • hockeynicole
  • · Replies 1 ·
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1
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2K
Thermodynamic problem using ideal gas( me (T_T) )
  • jabjab
  • · Replies 2 ·
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2
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11K
Finding distance and time? i already found out half of the problem.
  • mandaa123
  • · Replies 1 ·
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1
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3K
Simple pulley system + kinetic friction, find tension
  • closer
  • · Replies 3 ·
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3
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58K
Estimating Energy in a Gallon of Gasoline
  • fk378
  • · Replies 1 ·
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1
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2K