Introductory Physics Homework Help Forum

Post thread
Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
How Much Work Is Done by Force Acting Along the X-Axis?
  • Ink
  • · Replies 1 ·
Replies
1
Work done using a pulley system
  • TJDF
  • · Replies 4 ·
Replies
4
I = Avnq Where am i going wrong?
  • SMBeresford
  • · Replies 3 ·
Replies
3
Change in potential energy on a roller coaster drop (frictionless)
  • closer
  • · Replies 2 ·
Replies
2
Calculating Magnetic Field of a Tight Coil
  • lemaire
  • · Replies 1 ·
Replies
1
How Does Friction Affect the Speed of a Bowling Ball When It Starts Rolling?
  • Tamishu
  • · Replies 1 ·
Replies
1
Angular Acceleration. Im totally lost
  • beanieb
  • · Replies 3 ·
Replies
3
Calculate Angle Between 2 Lines in 3D - Easy Formula
  • ikeoe
  • · Replies 4 ·
Replies
4
Solving the Kinetic Energy of a Baseball
  • blayman5
  • · Replies 3 ·
Replies
3
A Mass Hanging From Multiple Strings
  • Null42
  • · Replies 2 ·
Replies
2
Calculating Hawk's Shadow Speed
  • niyati
  • · Replies 5 ·
Replies
5
What Forces Are Needed to Move a Sled Up an Inclined Plane?
  • DJWise
  • · Replies 1 ·
Replies
1
Understanding Safety Precautions for Charged Metallic Spheres
  • Blackice
  • · Replies 7 ·
Replies
7
Just Tell Me If Its Doable (Vectors)
  • sugarntwiligh
  • · Replies 4 ·
Replies
4
How to Calculate the Centroid of a Half Circle?
  • JJones_86
  • · Replies 8 ·
Replies
8
Determine the temperature of the blood/ Heat problem
  • iceT
  • · Replies 9 ·
Replies
9
What is the correct force to accelerate a block on an incline?
  • nokia8650
  • · Replies 1 ·
Replies
1
Forces on a ball in a moving car
  • theneedtoknow
  • · Replies 1 ·
Replies
1
Force-Pulley problem solving for accel
  • bocobuff
  • · Replies 1 ·
Replies
1
What is the speed of a pendulum at a given horizontal position and length?
  • whatsntomake
  • · Replies 3 ·
Replies
3
Compressions and rarefactions of a sound wave
  • Nauraushaun
  • · Replies 2 ·
Replies
2
Mean Time Between Collisions of Ideal Gas Molecules: What Factors Matter?
  • h0dgey84bc
  • · Replies 2 ·
Replies
2
Frequency of oscillating cylinder
  • LiorE
  • · Replies 2 ·
Replies
2
Critical Angle Geometric Optics
  • Gear300
  • · Replies 2 ·
Replies
2
Acceleration due to gravity is -9.8m/s^2
  • usagi101
  • · Replies 2 ·
Replies
2
Efficiency of Motor: 6V, 0.25A, 200g Weight, 4J Potential Energy
  • usagi101
  • · Replies 1 ·
Replies
1
Volume when givin Mass and Specific Gravity
  • Duely Cack
  • · Replies 1 ·
Replies
1
What is the Orbital Speed of a Satellite at 7000 km Altitude?
  • JohnnyB212
  • · Replies 2 ·
Replies
2
Electric Motor and Magnetic Field
  • MJC8719
  • · Replies 3 ·
Replies
3
Rolling Rod in a Magnetic Field
  • Ithryndil
  • · Replies 4 ·
Replies
4
How long to fire a small rocket. Impulse problem.
  • fanie1031
  • · Replies 4 ·
Replies
4
How Do You Calculate the Momentum of a Recoiling Nucleus in a Decay Process?
  • crimsonn
  • · Replies 6 ·
Replies
6
Basic Power Problem: 66 kW Solution
  • renob
  • · Replies 5 ·
Replies
5
What Frequency Does a String Vibrate at in Its Second Harmonic?
  • shupert.11
  • · Replies 1 ·
Replies
1
Friction with two masses (Help)
  • DJWise
  • · Replies 1 ·
Replies
1
Unraveling the Mystery of Beat Frequencies in Musical Instruments
  • shupert.11
  • · Replies 4 ·
Replies
4
Spring distance vs force lab question
  • proace360
  • · Replies 13 ·
Replies
13
Solving for Initial Bullet Speed: Mass, Spring, and Friction
  • zyphriss2
  • · Replies 7 ·
Replies
7
Coefficient of friction question.
  • JohnnyB212
  • · Replies 3 ·
Replies
3
Solving 2 Problems: Vertical Displacement & Mass on Spring
  • subwaybusker
  • · Replies 1 ·
Replies
1
The vector nature of forces hw ?
  • eaglenerd
  • · Replies 1 ·
Replies
1
Block sliding down an incline and hitting a smaller block
  • 12boone
  • · Replies 7 ·
Replies
7
I with a problem dealing with static friction
  • steph3824
  • · Replies 2 ·
Replies
2
Average Speed and Force Question
  • baltar
  • · Replies 1 ·
Replies
1
What Temperature Causes a Steel Ball to Loosen in a Pyrex Cube?
  • Lance WIlliam
  • · Replies 1 ·
Replies
1
Inelastic Collision of a bullet and block
  • 12boone
  • · Replies 6 ·
Replies
6
Circular motion- finding angle of the banking
  • wxwolf
  • · Replies 1 ·
Replies
1
Find Tension in Motorboat Towline: Homework Solution
  • cturtle
  • · Replies 2 ·
Replies
2
Problem with caclulatin forces in structure
  • louike
  • · Replies 2 ·
Replies
2
Calculating the capacitance problem
  • ctpengage
  • · Replies 1 ·
Replies
1
How Much Work Does Batman Do Swinging to a Ledge?
  • crhscoog
  • · Replies 1 ·
Replies
1
Electricity, Magnets, & Circuits
  • playyer565
  • · Replies 1 ·
Replies
1
Plane flying at an angle, trying to find radius
  • I_LuV_FiZiX
  • · Replies 8 ·
Replies
8
Need Help with Calc-Based Physics Before Exam?
  • di8000
  • · Replies 4 ·
Replies
4
Calc based- motion in 2 and 3 dimensions
  • di8000
  • · Replies 1 ·
Replies
1
What kind of math do I include in THIS?
  • Ashleyz
  • · Replies 4 ·
Replies
4
Conservation of Momentum/Energy related problem
  • maniacp08
  • · Replies 13 ·
Replies
13
Hooke's Law & SHM Homework: Solution Attempt
  • physics_31415
  • · Replies 6 ·
Replies
6
Block on Block Dynamic Question
  • wby
  • · Replies 1 ·
Replies
1
Work and Potential Energy Problem
  • bengaltiger14
  • · Replies 1 ·
Replies
1
Determination of e/m of electron by magic eye method
  • kpstp88
  • · Replies 1 ·
Replies
1
Gravity's affect on weight in an elevator
  • bholloway
  • · Replies 1 ·
Replies
1
What Force is Needed to Double the Constant Velocity of a Block?
  • snoopygal327
  • · Replies 6 ·
Replies
6
How Long Does It Take for a Person to Travel Up a Ramp Propelled by a Spring?
  • SbCl3
  • · Replies 1 ·
Replies
1
Gauss Law - Conducting cylindrical shell
  • MichaelT
  • · Replies 5 ·
Replies
5
Moment of Inertia of a Hemisphere
  • hp-p00nst3r
  • · Replies 1 ·
Replies
1
A small car meshes with a large truck in a head-on collision
  • 12boone
  • · Replies 1 ·
Replies
1
Deriving the Electric Field from the Electric Potential: A Calculus Approach
  • kevinr
  • · Replies 2 ·
Replies
2
Help deriving expression for the error in velocity.
  • Vasili
  • · Replies 5 ·
Replies
5
Solving Gauss's Law Problem 1: Electric Field for r=3Rsub2
  • MichaelT
  • · Replies 6 ·
Replies
6
Newton's Laws Problem- Question on upcoming TEST
  • mrmiggidude
  • · Replies 2 ·
Replies
2
Energy and WET (Incline pulley system)
  • closer
  • · Replies 5 ·
Replies
5
What is the power output needed to bike uphill at a steady speed of 4.5 m/s?
  • Symstar
  • · Replies 3 ·
Replies
3
Thermal Expansion with rod and ruler.
  • Aeighme
  • · Replies 5 ·
Replies
5
What Is the Initial Speed of a Ball Thrown at an Angle to Return in 3 Seconds?
  • 1234567890
  • · Replies 1 ·
Replies
1
Oscillating electron has drift velocity too?
  • loonychune
  • · Replies 4 ·
Replies
4
Finding Total Number of Electron States with n=3
  • roeb
  • · Replies 1 ·
Replies
1
How Does Adding Mass Affect Spring Potential Energy?
  • alemon
  • · Replies 8 ·
Replies
8
How Fast Does a Ball Shoot from a Toy Cannon with Friction?
  • closer
  • · Replies 1 ·
Replies
1
Understanding Hooke's Law: Comparing Force Constants of Linearly Joined Springs
  • Doctor Lee
  • · Replies 3 ·
Replies
3
Solving Work Done in Pushing Sled Up Snowy Incline
  • foxproff
  • · Replies 2 ·
Replies
2
How Is an Astronaut's Apparent Weight Calculated in Space?
  • drewdiddy
  • · Replies 1 ·
Replies
1
Why Is My Calculation of Electron Travel Time Incorrect?
  • cheese825
  • · Replies 5 ·
Replies
5
Coordinate (1,-2), angle of intersection thru origin?
  • bchandler
  • · Replies 1 ·
Replies
1
Potential Energy and WET (Incline with friction)
  • closer
  • · Replies 5 ·
Replies
5
Calculating the Year Length of Planet Y Around Alpha
  • jnimagine
  • · Replies 1 ·
Replies
1
How Do Forces Affect Motion in Different Scenarios?
  • foxproff
  • · Replies 5 ·
Replies
5
Convert 185 lbs, 23 in to Joules
  • gator6688
  • · Replies 1 ·
Replies
1
Difference between EM wave & a Matter wave ?
  • mkbh_10
  • · Replies 3 ·
Replies
3
Linear Momentum and Collisions- Acceleration Relative to the Ice
  • rsfancy
  • · Replies 1 ·
Replies
1
What is the solution to this electron motion problem?
  • steph35
  • · Replies 2 ·
Replies
2
A train traveling at a constant speed
  • sugarntwiligh
  • · Replies 1 ·
Replies
1
Projectile Motion given 2 position equation
  • steph35
  • · Replies 3 ·
Replies
3
Calculating Final Velocity in a System with Potential Energy and Friction
  • closer
  • · Replies 2 ·
Replies
2
How Can a Mask, Light Gate, and Motion Computer Measure Instantaneous Speed?
  • Revolutionz
  • · Replies 1 ·
Replies
1
Radial acceleration around a planet
  • anteaters
  • · Replies 5 ·
Replies
5
Determine the range of capacitance
  • zeshkani_usa
  • · Replies 3 ·
Replies
3
Solving the Angle of a Rolling Penny
  • davesface
  • · Replies 4 ·
Replies
4
Change in Linear Momentum with mass and velocity
  • vurk
  • · Replies 1 ·
Replies
1
Force and Motion with two unknows
  • ankitp3
  • · Replies 5 ·
Replies
5