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