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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Estimating Energy in a Gallon of Gasoline
- fk378
- · Replies 1 ·
How Fast Must an Electron Travel to Excite a Hydrogen Atom?
- ke0nGz
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Apparent weight on an elevator. Magnitude of its acceleration?
- WPCareyDevil
- · Replies 6 ·
Finding height with constant acceleration
- !!!
- · Replies 2 ·
Projectile Motion of ball down inclined plane
- mikee
- · Replies 6 ·
Spinning a bucket in a vertical circle
- proace360
- · Replies 2 ·
Motion In Two Dimensions Lab Question
- Iokia
- · Replies 4 ·
Find the Coordinates of Point B using Cross Product
- Melawrghk
- · Replies 2 ·
What Was the Mass of the Original Stack of Books?
- omgitsmonica
- · Replies 1 ·
Proving e^Ae^B=e^{A+B} for Commuting Matrices
- kreil
- · Replies 1 ·
Baseball and projectile motion problem
- billieluv
- · Replies 1 ·
Potential inside of chrged non-conductive sphere
- anizet
- · Replies 7 ·
Need help understanding vector equations (very basic)
- astonmartin
- · Replies 1 ·
Non-uniform circular motion and tangential acceleration
- Symstar
- · Replies 2 ·
How Is the Coefficient of Friction Calculated in a Spring Block System?
- southernbelle
- · Replies 3 ·
How Do You Calculate Initial Speed in Projectile Motion?
- billieluv
- · Replies 1 ·
Question about water weight and pressure
- lyndan
- · Replies 4 ·
How Do You Calculate Potential Energy with a Constant Force?
- maniacp08
- · Replies 4 ·
Help with point charges and electric fields
- lyndan
- · Replies 1 ·
Angular Acceleration of a system.
- myr10
- · Replies 1 ·
What Is the Angular Speed of a Falling Meter Stick?
- gmiller4th
- · Replies 1 ·
Newton's second law and a locomotive
- Jennifer001
- · Replies 6 ·
Pulley question(Newtons third law)
- Jennifer001
- · Replies 1 ·
More projectile motion difficulties
- billieluv
- · Replies 4 ·
Really simple system of equations
- yoleven
- · Replies 1 ·
Series or Parallel Springs? | Homework Help
- zorostang
- · Replies 6 ·
What is the Acceleration of a 2442 kg Elevator Moving Upward?
- Abb
- · Replies 3 ·
Drag of Car across frictionless surface.
- JosephLee
- · Replies 1 ·
How Do You Calculate the Tension in Multiple Wires Supporting Artifacts?
- lisalisa
- · Replies 7 ·
Help with force and motion with friction problems
- NYbikerkid
- · Replies 1 ·
Calculating Spring Force with a Man's Jump and Platform Compression
- southernbelle
- · Replies 2 ·
Using acceleration to find distance traveled
- swede5670
- · Replies 3 ·
Coefficient of static friction of chain
- coolcat_ka
- · Replies 4 ·
What was the object's speed as it fell off the edge of the table?
- notagenius08
- · Replies 2 ·
An Automobiles acceleration and speed
- swede5670
- · Replies 2 ·
Calculating Power Dissipation in a Parallel Circuit with Multiple Resistors
- buckeyes
- · Replies 11 ·
How dangerous is it to ascend with expanding lungs?
- erik-the-red
- · Replies 8 ·
Frictional Forces without coefficient
- STS816
- · Replies 1 ·
Help I dunno how to use coefficient
- theLHC
- · Replies 5 ·
Projectile Motion thrown basketball
- Cate
- · Replies 1 ·
What is the relationship between angular velocity and tangential velocity?
- rebeccc
- · Replies 6 ·
Calculating Frequency of Oscillating Mass on a Spring
- aleferesco
- · Replies 4 ·
What Determines the Charge of an Object in Electrostatic Induction?
- MIA6
- · Replies 4 ·
Direction of the net force on the charge
- MIA6
- · Replies 2 ·
Capacitors disconnected from the battery
- laduch
- · Replies 3 ·
Series Circuit: 10 Ohm Resistor, Bulb, 12V Source
- ElectricSlide
- · Replies 9 ·
Solving Projectile Motion: Horizontal & Vertical Distances
- kitle545
- · Replies 1 ·
Calculating Work Required to Lift a Hanging Chain
- Default User
- · Replies 2 ·
Equal and Opposite variable forces on a mass - does it accelerate?
- Erica799
- · Replies 1 ·
Swinging from a vine (circular motion/tension problem)
- closer
- · Replies 4 ·
How Do You Calculate Stopping Distance Using a Velocity-Time Graph?
- getfirefox
- · Replies 1 ·
Calculating direction of magnitude of a crate on a ramp
- WPCareyDevil
- · Replies 2 ·
Calculating Radial Acceleration in Nonuniform Circular Motion
- subwaybusker
- · Replies 12 ·
What Is the Final Velocity of the Wood After Bullets Impact?
- omeromer
- · Replies 3 ·
Find the magnitude of the electric field at the center
- larkinfan11
- · Replies 5 ·
Potential vs Kinetic Energy Help
- pinkvoid
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How Does a Rock Climber Use Friction to Climb?
- uberbandgeek6
- · Replies 3 ·
Work and energy - 90% done, just need little clarification
- maniacp08
- · Replies 4 ·
What Is the Final Velocity of a 2 kg Mass on a Frictional Incline?
- Pakbabydoll
- · Replies 3 ·
Need help converting a function of displacement to a function of time.
- lylos
- · Replies 5 ·
Find force link 3 exerts on link 2
- jturn
- · Replies 2 ·
Circular Motion - Roadway Bank Angle
- JeffNYC
- · Replies 3 ·
AP Physics: Vectos and their properties
- Blodwynne
- · Replies 4 ·
Partial derivatives with Wave Function
- abelanger
- · Replies 2 ·
Projectile Motion Using Speed Graph
- calvert11
- · Replies 3 ·
Calculating Work Done on a Block Moving Up an Incline
- myk127
- · Replies 3 ·
Temperature variation of resistance
- jsantor1
- · Replies 11 ·
How Do You Calculate Velocity and Energy in an Elastic Collision?
- irun4edmund
- · Replies 4 ·
Non-Physics Major Needs Physics Help
- Muirghiel
- · Replies 1 ·
PHYSiCS NEED HELP please show work
- bsmith8808
- · Replies 2 ·
Electric motors & faraday's law
- jackd
- · Replies 1 ·
What Is the Error of Log(mh) When m and h Have Known Relative Errors?
- excel000
- · Replies 1 ·
Hanging Mass Tension Problem: What is the tension in each cable?
- raven2783
- · Replies 8 ·
Applications of Faraday's Law: Deflection of Pointer in a Magnet-Coil System
- jackd
- · Replies 2 ·
Physics lab help, determining acceleration thru V vs T graph?
- papi
- · Replies 27 ·
Minimum speed to maintain a circular trajectory
- xxgaxx
- · Replies 1 ·
How Fast Can a Rock Spin Before the String Breaks?
- hofluff87
- · Replies 3 ·
Regents Problems Best Solution
- spot
- · Replies 1 ·
Crates with diff. mass inside elevator at constant speed
- bocobuff
- · Replies 1 ·
What is the Electric Field Outside a Pipe with a Uniform Charge Density?
- jaejoon89
- · Replies 4 ·
Calculate displacement based on velocity and acceleration
- Planefreak
- · Replies 3 ·
A rocket is launched kinematics
- Jennifer001
- · Replies 1 ·
Understanding the Relationship between Tension, Teeth, and Force
- lovelockdown
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Calculating Minimum Force for Stationary Block Against Wall
- dwan3
- · Replies 4 ·
Calculating the Frequency of a Tuning Fork Using Resonance Tube Method
- Shackleford
- · Replies 4 ·
Potential Difference in a Capacitor
- cowmoo32
- · Replies 3 ·
Kinematics equations with collision fo 2 balls
- mjolnir80
- · Replies 1 ·
What Was the Initial Speed of the Horizontally Shot Arrow?
- 1234567890
- · Replies 2 ·
Determine the centripetal force
- xxgaxx
- · Replies 2 ·
A Terrible Accident involving a Barrel of Bricks and a lot of Force
- Phoenixtears
- · Replies 3 ·
Instantaneous Power (Mastering Physics)
- ren0x
- · Replies 3 ·
How do I find the correct magnitude using vectors and magnitudes?
- Oblivion77
- · Replies 6 ·
General equation for fractional error
- benji55545
- · Replies 8 ·
How Do You Solve Physics Problems Involving Velocity and Pendulum Equations?
- jjl15hid
- · Replies 2 ·
Electric potential difference question
- jaejoon89
- · Replies 1 ·
How Fast Can You Drive Without Hitting the Deer?
- Jennifer001
- · Replies 1 ·
Uncovering the Mass of an Object on Planet X
- tater08
- · Replies 3 ·
Optimizing Silk Strand Diameter for Maximum Tensile Strength
- crimsonn
- · Replies 18 ·
Understanding the Best Fit Line: What Does It Mean?
- papi
- · Replies 3 ·
Help with question on forces with motion, tension, friction
- shadowofanub
- · Replies 3 ·