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 much work, speed and resistive force
- Haveagoodday
- · Replies 11 ·
How do you find the coefficient of restitution with only d?
- brinstar
- · Replies 12 ·
What is the centripetal acceleration of the bob-sleigh?
- Haveagoodday
- · Replies 15 ·
Tricky velocity/time problem without distance
- PhysicsBoyMan
- · Replies 13 ·
Ideal Gas Equation and Polytropic Constant
- Redfire66
- · Replies 3 ·
Conservation of Energy and Momentum
- nonaJ
- · Replies 1 ·
Absolute Zero Gas: Is Motion Possible?
- heavystray
- · Replies 4 ·
Vertical Velocity: A Key Concept in Physics?
- clonk99
- · Replies 10 ·
Finding theta when moment is max
- goldfish9776
- · Replies 2 ·
Direction of resultant force from a point
- goldfish9776
- · Replies 1 ·
Calculating Velocity and Time for an Accelerating Air Boat
- nenders
- · Replies 5 ·
How Do I Start Solving Part C of the Physics Problem?
- werson tan
- · Replies 26 ·
Flow of gases through a capillary
- Ella123
- · Replies 1 ·
Applying Conservation of Momentum along the Y axis
- Better WOrld
- · Replies 5 ·
Is the Angle Between Vector A and Ax Less Than 90 Degrees When Alpha Exceeds 90?
- werson tan
- · Replies 6 ·
Electric Field Between Three Point Charges
- CoffeeCrow
- · Replies 4 ·
Time to raise tem from 25 to 145 celcius
- dannie7
- · Replies 1 ·
Can anybody correct me if I'm wrong?
- Dembie
- · Replies 3 ·
Index of refraction from reflected light (polarised)
- Jon.G
- · Replies 1 ·
How Does Discriminator Control Influence Reheat Requirements in HVAC Systems?
- pinkcashmere
- · Replies 2 ·
Forces that can be considered centripetal force
- kolua
- · Replies 2 ·
Geometric optics and Fermat's principle
- whatisreality
- · Replies 7 ·
Axial & Polar Vectors: List & Examples
- kolua
- · Replies 1 ·
Finding combined kinetic energy
- PAstudent
- · Replies 1 ·
Projectile thrown horizontally off a cliff
- jeff12
- · Replies 22 ·
Is the Angle of a Projectile at 1/4 of its Flight the Same as When it is Fired?
- jeff12
- · Replies 31 ·
Semiconductor doping - doping concentration is 0?
- orangeincup
- · Replies 5 ·
Vector Decomposition and Trig in Tension Force Analysis
- Scorry
- · Replies 5 ·
Speed and velocity 4 quick questions
- Optikspik
- · Replies 3 ·
Window Washer w/ Bucket-Pulley Apparatus
- hawkeye1029
- · Replies 18 ·
How Do I Find Direction of Forces in Statics?
- Ivan Antunovic
- · Replies 6 ·
Thermodynamics problem -- Water pumped into an enclosed tank....
- danny12345
- · Replies 10 ·
Work & Energy: Forces with Angles
- LiterallyLogan
- · Replies 4 ·
Forces exerted on the ladder by the wall and ground
- moenste
- · Replies 5 ·
Moment about shaft from hydrostatic forces
- zerogoal
- · Replies 1 ·
Magnetic Force and Gravity in a Horizontal Wire Circuit
- phyvamp
- · Replies 5 ·
Need help finding degrees to the right of the forward direct
- PhysicsPadawan
- · Replies 3 ·
Simple harmonic motion - answer slightly off
- Lord Anoobis
- · Replies 2 ·
Energy in relation to a forced oscillator
- shanepitts
- · Replies 1 ·
Figuring out force required to get an object from A to B
- newcomma
- · Replies 2 ·
Problem with conducting loop and magnetic field
- teetar
- · Replies 2 ·
A force is applied to an atom....
- motleycat
- · Replies 3 ·
Easy university force/motion problem
- Optikspik
- · Replies 5 ·
Calculating Heat Flow in Composite Sheet with Different Thermal Conductivities
- KingOfQuestions
- · Replies 1 ·
Find the Thevenin's Equivalence of a Circuit
- haha1234
- · Replies 1 ·
Find tension and angle from second rope
- JustinP88
- · Replies 2 ·
Magnification at a Different Distance from Mirror?
- DaveMann
- · Replies 1 ·
What Horizontal Distance Does a Block Cover After Launching Up an Incline?
- aa2114
- · Replies 7 ·
Tension between two masses and three ropes
- jbuck
- · Replies 1 ·
What is the B-field at the center of a semicircle using the Biot-Savart Law?
- pinkfishegg
- · Replies 3 ·
Calculating the Earth's Recoil Speed After Asteroid Impact
- Dick Channy
- · Replies 1 ·
What happens to acceleration when speed doubles?
- motleycat
- · Replies 11 ·
Magnetic Field and Charged Particle Motion
- phyvamp
- · Replies 5 ·
First Year Special Relativity Question
- NotAnAstrologer
- · Replies 5 ·
What's the Trick to Solving Incline Plane Problems?
- Optikspik
- · Replies 1 ·
Finding current in a resistor circuit
- mjjaques
- · Replies 4 ·
Coefficient of Kinetic Friction
- Beanie
- · Replies 6 ·
Extreme Environment Robotics: Materials for a -1000°C Planet
- HugeDragon
- · Replies 11 ·
Find masses of particles on pulleys attached by strings
- moenste
- · Replies 9 ·
How can balanced forces result in constant velocity?
- jumbogala
- · Replies 2 ·
Finding the acceleration of a refrigerator
- physics411
- · Replies 6 ·
Straight Line Kinematics Problem
- cvc121
- · Replies 2 ·
Going from position vs. time to velocity vs. time
- Kelly k
- · Replies 1 ·
Equilibrium distance for solar sail
- cyberdiver
- · Replies 8 ·
Forces on a Window: 3 Suction Cups & Normal Force
- Drizzy
- · Replies 7 ·
Finding maximum speed (known: Force output, drag, time)
- JohnLCC517
- · Replies 4 ·
What is the relationship between x-t and v-t graph?
- Optikspik
- · Replies 7 ·
Beam and Support Force Question
- G.T
- · Replies 1 ·
Acceleration & tension in a cable
- Robb
- · Replies 21 ·
What is the Kinetic and Linear Dynamics of a Falling Wheel with a Rope?
- Karol
- · Replies 46 ·
Constant and variable specific heat assumptions
- Luchekv
- · Replies 10 ·
Moment about a point using graph paper
- werson tan
- · Replies 7 ·
Projectile Motion spring launch
- BoydC1996
- · Replies 1 ·
I'm I on the right track? Tension question
- Kingyou123
- · Replies 21 ·
Why Does a Log Only Fall to the Left or Right in Angry Birds?
- motleycat
- · Replies 1 ·
Find the Tension in a Flexible Chain Resting on a Cone
- tobix10
- · Replies 2 ·
Luke's speed doubles. Does the size of Luke's acceleration a
- motleycat
- · Replies 1 ·
AC Circuits: Solving for Impedance and Voltage in Complex Notation
- Calpalned
- · Replies 1 ·
Work function and kinetic energy
- Abdul.119
- · Replies 1 ·
How to Calculate Power Output for Lifting and Flinging Objects?
- PAstudent
- · Replies 1 ·
Acceleration on a Pulley: Equal or Different for Connected Masses?
- Tim Wellens
- · Replies 1 ·
Lowering an object without breaking the the rope
- Kingyou123
- · Replies 3 ·
How Do Macrostates and Microstates Determine Particle Energy Distribution?
- pinkfishegg
- · Replies 5 ·
How to Estimate Work Done from a Graph?
- Jimmy87
- · Replies 4 ·
2 capacitors in series w/ a dielectric.
- Iron Charioteer
- · Replies 3 ·
Particle in a uniform magnetic field
- bowdish.9
- · Replies 1 ·
Motion Equation Homework: Solving with Simple Equations
- RyanH42
- · Replies 8 ·
Derive an expression for the acceleration of the ramp.
- Snaek96
- · Replies 5 ·
Two dimensional movements and circular motion
- karljohan
- · Replies 5 ·
How many peaks in the interference pattern?
- Abdul.119
- · Replies 6 ·
Inertia and moving plane problem
- gillouche
- · Replies 7 ·
Does any current flow in reverse PN junction?
- Dembie
- · Replies 4 ·
Finding the net torque about the axle?
- Kyp
- · Replies 3 ·
Electric Fields in Coaxial Cables: Understanding Bound Charge Densities
- PhysicsPrincess
- · Replies 1 ·
How Do You Compute the Electric Potential Using the Method of Image Charges?
- BOAS
- · Replies 4 ·
Orbiting Ellipses: Is the Cross Product of Velocity and Radius Constant?
- Calpalned
- · Replies 8 ·
Pendulum periodic motion; period parameter
- **Mariam**
- · Replies 5 ·
Acceleration and Tension in Multiple Pulleys
- Lanox
- · Replies 7 ·
Using dimensions to derive an equation
- Darren Byrne
- · Replies 1 ·
How the current remains same in series circuit?
- 123kid
- · Replies 2 ·