Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
How to Determine the Initial Temperature of Iron to Melt Ice in Thermodynamics?
- ashvuck101
- · Replies 12 ·
Electric Forces Lab Homework: Calculating Charge of Pith Balls
- General_Sax
- · Replies 8 ·
Heat question?the amount of heat gained or lost by a substance is equal to
- amandamolegir
- · Replies 8 ·
Equilibrium Problem: Max Mass for Throckmorton on 6.0m Plank
- jghlee
- · Replies 3 ·
(3 questions) Reflection and Refraction
- whitehorsey
- · Replies 1 ·
RC Circuit/Current/Resistance Problem. Circuit Gurus come here
- Divide
- · Replies 15 ·
Understanding Capacitor Energy Storage: Clarifying Charge and Energy Units
- leelsund
- · Replies 7 ·
Complex scissors truss question
- haydez98
- · Replies 8 ·
How Can I Calculate Energy and Power for an 800W Electric Motor?
- lovcullen
- · Replies 4 ·
Calculate Magnitude & Angles of Vector B
- abhikesbhat
- · Replies 19 ·
Kinematic Car Race: Which Car Will Win with and without Friction?
- keemosabi
- · Replies 9 ·
Particle in an infinite potential well
- mrausum
- · Replies 3 ·
How Do You Calculate the Speed of a Marble Rolling Down an Incline?
- lagwagon555
- · Replies 2 ·
What is the speed of the objects in a pulley system?
- physics10189
- · Replies 8 ·
Negative acceleration - change in direction or slowing down?
- kathyt.25
- · Replies 3 ·
Calculating Wavelengths & Energy Levels of Hydrogen Atom
- HjGanap
- · Replies 1 ·
Analyzing Motion Down a Curved Ramp | Guidance & Help
- oxnume
- · Replies 16 ·
Unraveling the Mystery of a Two-Car Crash
- loka
- · Replies 4 ·
Uncertainty propagation visible light spectrum
- zdenton
- · Replies 4 ·
Finding acceleration of two objects in a pulley system
- kathyt.25
- · Replies 3 ·
Tension and acceleration of a pulley sytem attached to a block
- emmaemma08
- · Replies 3 ·
What Are the G-Forces Experienced on a Rollercoaster Ride?
- Oscar Wilde
- · Replies 5 ·
Ideal Gas Law and dimensional analysis
- science.girl
- · Replies 9 ·
Finding y in a projectile motion problem
- jenador
- · Replies 4 ·
HELP: Friction on upward motion in an inclined plane
- cursedsoul03
- · Replies 3 ·
Net force on an object and contact force between objects
- kathyt.25
- · Replies 2 ·
Newton's third law and free body diagrams
- kathyt.25
- · Replies 1 ·
Finding acceleration of a three-object pulley system
- kathyt.25
- · Replies 2 ·
Siphoning A Clogged Sink (Bernoulli's Principle)
- GDGirl
- · Replies 5 ·
*Calculation for Moon Descent and Ascent Velocity*
- vincentryan
- · Replies 1 ·
How to Calculate the Distance of a Projectile Released from an Airplane?
- jenador
- · Replies 13 ·
When can you assume that gravity is the only applied force opposing friction?
- kathyt.25
- · Replies 3 ·
Finding wavelength with just frequency?
- DDRchick
- · Replies 3 ·
The Brogile wavelength of an Alpha particle
- mrausum
- · Replies 7 ·
What is the Spring Constant of a Spider's Silk Thread?
- brunettegurl
- · Replies 7 ·
Can You Calculate Capacitance for Each Half of a Cylinder Capacitor Separately?
- en.yokhai
- · Replies 1 ·
Solving Power for Solenoid w/ 9.80 mT Field
- hellomister
- · Replies 1 ·
Why Is the Angle FIE Omitted in the Cylindrical Coordinate Answer?
- bengaltiger14
- · Replies 2 ·
Resolve 3 Forces & Find Resultant Force and Angle - Basic Question
- NBAJam100
- · Replies 2 ·
Minimum compression of a spring.
- college boy19
- · Replies 1 ·
What Physics Principle Explains Why a Balloon Shoots Out When Air Rushes Out?
- Nuha99
- · Replies 3 ·
Ideal Carnot Engine Homework | 5kW Output, 35% Efficiency, 30deg Heat Rejection
- cathy88
- · Replies 7 ·
Dymanics, F=ma, F function of position & velocity (it's really important)
- Wattever
- · Replies 6 ·
Rearranging Formulas for Orbital Velocity and Radius
- dukg08
- · Replies 11 ·
Calculating Particle Mass from Decay Products: A Momentum Approach
- Angel_Kate
- · Replies 10 ·
Pendulum find length when it rotates
- physics10189
- · Replies 5 ·
Magnetic Fields - Extending Concepts
- krwilliams
- · Replies 8 ·
Finding the distance from a velocity-time graph
- kathyt.25
- · Replies 2 ·
Which kinematic equation should be used?
- kathyt.25
- · Replies 3 ·
How do moving electric fields create magnetic fields?
- Yuqing
- · Replies 1 ·
What is the friction force between a sliding bear and a tree?
- mellybug
- · Replies 1 ·
What is the Relationship Between Wavelength and Ionization Energy in Hydrogen?
- mrausum
- · Replies 5 ·
Two unknown resistors. Need to find values of resistors.
- jhart_929
- · Replies 8 ·
A safe held by a string breaks and lands on a spring
- talaroue
- · Replies 8 ·
Can Two Street Cars Be Pulled Up a Slope with a Low Friction Coefficient?
- cheez
- · Replies 6 ·
Electric Field at Point Z, Two Charges
- mike_302
- · Replies 4 ·
Finding the x component from a velocity vs. time graph
- ran
- · Replies 4 ·
Cylindrical fishing reel problem using moment of inertia
- jhart_929
- · Replies 3 ·
Finding the force of friction acting on an object - static or kinetic friction?
- kathyt.25
- · Replies 1 ·
Varying force is applied to an object problem
- brentwoodbc
- · Replies 1 ·
Calculating Acceleration of Simple Pendulum
- lha08
- · Replies 3 ·
Acceleration on a curve for a car
- ahchonx
- · Replies 5 ·
How Does Acceleration Impact a Sprinter's 100 Meter Dash Performance?
- jmanz
- · Replies 6 ·
Motion on a Plane: Solving Problems with Stone Thrown from 200m Tower
- mohammed1992
- · Replies 2 ·
How Do You Calculate Football's Velocity and Time to Reach Maximum Height?
- mohammed1992
- · Replies 1 ·
Speed of refracted waves in different mediums
- taylorboss_k
- · Replies 5 ·
Frictional force/coeff of friction
- pizat98
- · Replies 4 ·
Projectile Motion cannon off a cliff
- Towk667
- · Replies 10 ·
Convex Mirrors and Magnification
- kc262
- · Replies 5 ·
Calculating Cliff Height Using Freefall Data
- Billy_Bob
- · Replies 5 ·
Does the normal always equal weight, if on a non-inclined plane?
- kathyt.25
- · Replies 3 ·
Analyzing the kinematic x(t) equation
- brusier
- · Replies 1 ·
How Can You Minimize Spherical Aberration in a Single Lens System?
- fantagero88
- · Replies 1 ·
Constant Acceleration involving two identical objects
- coco87
- · Replies 2 ·
What is the momentum of the heavier fragment after a rocket explosion?
- talaroue
- · Replies 20 ·
Projectile motion stunt doubles
- pinkfloyd12
- · Replies 5 ·
Bullet hits a block and it slides.
- talaroue
- · Replies 3 ·
Momentum problem involving collision of two objects.
- angotta
- · Replies 7 ·
Finding the direction of acceleration in degrees
- kathyt.25
- · Replies 1 ·
Pulley question - acceleration of an object across a horizontal surface
- kathyt.25
- · Replies 2 ·
What is the role of Q1 in finding V2 using Bernoulli's equation?
- Saladsamurai
- · Replies 11 ·
Kirchhoff's Current Law and Solving for Unknown Currents
- jayjay112
- · Replies 8 ·
Tension and Friction Problem, I'm finding weird answer.
- tomas_xc
- · Replies 8 ·
Conservation of momentum of a colliding car
- DrDanger
- · Replies 3 ·
Solve Equivalent Resistance: Points A and B
- physicsed
- · Replies 4 ·
Electric Field: Opposite Charges for Zero Net Field
- Ephysics
- · Replies 2 ·
Finding potential difference between terminals
- manjula
- · Replies 2 ·
Total resistance through cubic circuit
- Fizzicist
- · Replies 6 ·
Magnetic field of a wire with current running through it
- Dell
- · Replies 7 ·
Potential energy problem pls help
- xgoodtimesx
- · Replies 2 ·
Oscillation in Space: Derive an Equation to Determine Period in Years
- xgoodtimesx
- · Replies 1 ·
How Is the Density of the Rock Determined in a Buoyancy Problem?
- xgoodtimesx
- · Replies 1 ·
Orbiting particle with given potential. Find the total energy. Need help
- PanosP
- · Replies 1 ·
Venturi Meter Finding Pressure Difference
- Saladsamurai
- · Replies 5 ·
Roller Coaster Loop-the-Loop: Solving for Kinetic Energy at Point B
- physics10189
- · Replies 7 ·
How to find velocity from an acceleration versus time graph?
- jmanz
- · Replies 3 ·
Carnot Engine question- quick check
- vorcil
- · Replies 8 ·
Building Faraday Flashlight Help
- psionicarrow
- · Replies 3 ·
Mass in a Falling Box: Investigating its Behaviour
- Myvalq
- · Replies 9 ·
Connecting two Carnot engions-
- C.E
- · Replies 15 ·