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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Image location and magnification for object closer than focal length to concave mirror
- Jonah14
- · Replies 1 ·
Caculating velocity on a different points on a rim of a wheel- AGAIN
- mmoadi
- · Replies 12 ·
Find Speed of Gayle & Brother on Sled After Descent from Hill
- VelvetRebel
- · Replies 2 ·
Finding speed given force and distance
- fattydq
- · Replies 11 ·
Measuring the average speed of an object
- Griffy11
- · Replies 6 ·
I get the answer, I just don't really understand why
- A(s)
- · Replies 6 ·
Electric field from a cylindrical shell
- phil ess
- · Replies 8 ·
What is the force exerted on a bullet leaving a rifle?
- physicsquest
- · Replies 1 ·
Angular Position, Velocity, and Accelration.
- bolivartech
- · Replies 2 ·
Kinetic Friction toboggan Problem
- r_swayze
- · Replies 4 ·
How Long Will It Take for a Spaceship and Asteroid to Meet?
- ShamTheCandle
- · Replies 8 ·
Centripetal motion, how to find radius?
- cruisx
- · Replies 5 ·
Help with friction problems
- zhangster11
- · Replies 20 ·
Electron in Homogeneous Electric Field
- jakk2
- · Replies 1 ·
How to Calculate Friction Force for a Box Being Dragged on a Level Floor?
- zhangster11
- · Replies 9 ·
Work done in a reversible adiabatic expansion
- Trowa
- · Replies 2 ·
How Can the Tension in a Cord Without Mass Be Found?
- pharoh123
- · Replies 2 ·
Finding normal forces on two stools supporting a plank with weight
- Doomoo
- · Replies 2 ·
Why Does the Tension Calculation for Charged Hanging Balls Show Incorrect?
- IllTry
- · Replies 5 ·
Baseball orbiting an asteroid with density 2400 kg/m³
- darthxepher
- · Replies 11 ·
Light travel time to Earth and Saturn, light bulb spectrum, Jupiter mass from Ganymede
- phys1120
- · Replies 3 ·
Current in a resistor and potential difference
- tag16
- · Replies 1 ·
How High Does a Basketball Bounce When Thrown at an Angle?
- ryno2107
- · Replies 1 ·
Solve for Initial Speed: Inelastic Collisions with Ballistic Pendulum
- patelkey
- · Replies 1 ·
Speed of Bullet: Solving for Velocity in Wood Block Collision
- kristibella
- · Replies 5 ·
Centripetal acceleration and force for two cars on a curve
- pookisantoki
- · Replies 2 ·
Work to move charges between two points and proton acceleration
- nns91
- · Replies 2 ·
How Do Magnetic Fields Behave Around Parallel Infinite Current Sheets?
- deerhunt713
- · Replies 1 ·
Max angle for solid cylinder to roll without slipping on incline
- CaptFormal
- · Replies 1 ·
Projectile motion and initial speed
- juliorevka
- · Replies 1 ·
Centripetal acceleration centrifuge
- pookisantoki
- · Replies 5 ·
What is the significance of an angle of 30 degrees with the positive x axis?
- Noxide
- · Replies 3 ·
What Speed Does the Man Hit the Ground?
- sacsac
- · Replies 4 ·
Calculate DN for 25 m/s Fire Hose Flow
- Saladsamurai
- · Replies 6 ·
How Do You Calculate the Total Acceleration of a Point on a Spinning Disk?
- Jimmy25
- · Replies 1 ·
Tricky Physics Problem - Picture Included -
- Elthamer
- · Replies 7 ·
Finding magnitude of a particle
- sweetipie2216
- · Replies 3 ·
Current through a branch of a circuit
- exitwound
- · Replies 6 ·
Cylindrical Capacitor
- rey242
- · Replies 3 ·
Solving Part B: Acceleration of End B after String Cut
- CaptFormal
- · Replies 1 ·
Few questions on mass and velocity
- sonutulsiani
- · Replies 3 ·
Learjet with 66000 N weight at constant velocity
- manu248
- · Replies 1 ·
Questions on forces and coefficients
- Kingbaldur
- · Replies 3 ·
Max % Change in Station Angular Speed Due to People Movement
- franknew
- · Replies 2 ·
Is a simple pendulum simple harmonic motion?
- maccha
- · Replies 2 ·
How Do You Calculate the Frequency for a Mass to Orbit on a Frictionless Table?
- cruisx
- · Replies 1 ·
How to get x vs t and v vs t equations?
- CChubbs
- · Replies 2 ·
Quick Kinetic Energy question - only confirmation of answer needed.
- Griffy11
- · Replies 4 ·
How to Find Accelerations in a Two-Object Pulley System?
- phish
- · Replies 1 ·
A Proton is Accelerated Through What Voltage?
- chunkytuna21
- · Replies 2 ·
How Do You Calculate Cable Tension in a Balancing System?
- markles
- · Replies 7 ·
How does radial forc vary with the radius of its circular path?
- Arshad_Physic
- · Replies 4 ·
Two sequential elastic collisions with mass ratios 2:1
- munchy35
- · Replies 4 ·
Kinetic energy of Earth's rotation
- franknew
- · Replies 1 ·
Centripetal Force and free body diagram
- KL90
- · Replies 1 ·
Mathematical pendulum - Arbitrary-amplitude period
- dingo_d
- · Replies 1 ·
Static friction on an inclined plane.
- megatron99
- · Replies 3 ·
Complicated Puck Problem (consevation of forces)
- Chuck 86
- · Replies 1 ·
How Does Boyle's Law Apply to a Bicycle Pump and Tire System?
- LadyDiana1011
- · Replies 1 ·
Solving Block on Incline Homework: F_w, F_n, F_f, & Theta
- Chandasouk
- · Replies 1 ·
What is the critical deceleration at which a seat belt locks?
- jannieDelta
- · Replies 1 ·
What is the least current to prevent the cylinder from rolling down the incline?
- dlslhc
- · Replies 3 ·
Basic circuit/intensity and distance vs time graph question.
- Griffy11
- · Replies 9 ·
Earth's Magnetic Field question
- Suy
- · Replies 8 ·
Find Energy stored in System of capacitors
- silkyjohnson
- · Replies 1 ·
Solving for Tension in Cement Bag Wires
- intriqet
- · Replies 3 ·
Velocity from Kinetic energy and work energy theorem
- IAmSparticus
- · Replies 1 ·
Work Energy Theorem, Kinetic Energy, and Tension
- IAmSparticus
- · Replies 12 ·
Simple Circuit Question (KVL/KCL)
- Novark
- · Replies 5 ·
How Do You Calculate the Distance for Torque Equilibrium?
- JamesEarl
- · Replies 1 ·
The Average Force Exerted on the Ball
- Tavia15
- · Replies 3 ·
Stopping Distance (Friction and Kinematics)
- Chandasouk
- · Replies 3 ·
What Is the Final Velocity at the Highest Point of a Pendulum?
- warfreak131
- · Replies 1 ·
How to Calculate Remaining Charge on a Capacitor After Discharge?
- haxxorboi
- · Replies 6 ·
Solve 1D Elastic Collision of Blocks: Speed of Block 3
- student35
- · Replies 1 ·
Solving Simple Angle Problem: -63.65° to Positive
- Osbourne_Cox
- · Replies 5 ·
Equilibrium physics problems
- gnarrr
- · Replies 4 ·
Vector displacement between ship and plane
- waldvocm
- · Replies 6 ·
Completely inelastic collision.
- Jimmy25
- · Replies 1 ·
Temperature rise in Denver from adiabatic wind descent
- DK007
- · Replies 2 ·
How Does Wind Affect an Airplane's Flight Path?
- helpmee
- · Replies 3 ·
Two objects of different masses slide up an inclined plane.
- megatron99
- · Replies 3 ·
Solving for Acceleration and Friction on an Inclined Plane
- mickjagger
- · Replies 3 ·
How Far Does a Box Slide Before Stopping If Pushing Force Is Removed?
- Chandasouk
- · Replies 1 ·
Finding Density of a Planet Using Period of Orbit
- surferdud3
- · Replies 1 ·
Moment of inertia of Sierpinski carpet
- player1_1_1
- · Replies 14 ·
Boy in wheelchair pushing down 2.37 m slope with friction
- Chuck 86
- · Replies 6 ·
Change in Kinetic Energy of a Cart + Pulley System
- Flamefury
- · Replies 8 ·
Baseball home run projectile motion: max height, time, distance, minimum speed
- 1irishman
- · Replies 18 ·
Energy of a solid rotating sphere
- wduff
- · Replies 2 ·
How Does an Unusual Force Affect Harmonic Oscillator Behavior?
- Onias
- · Replies 1 ·
Questions about Electrostatic Fields
- penguin007
- · Replies 2 ·
How Do Counterweights Affect the Sag of a Rope Bridge?
- maroonandgold
- · Replies 1 ·
Circular motion of a car and curve
- pankti_ptl
- · Replies 8 ·
Pushing a box across horizontal surface
- Chandasouk
- · Replies 6 ·
Mass and acceleration for weights on incline with pulley
- mmoadi
- · Replies 18 ·
Uniform rectangular plate equilibrium problem
- kudoushinichi88
- · Replies 1 ·
Calculating Thermal Dilation in Sodium Using Bulk Modulus and Temperature
- daudaudaudau
- · Replies 2 ·
Calculate Resultant Force and Angle of Object at Origin
- zaga04
- · Replies 3 ·