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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A problem with a magnetic field and a revolving stick
- fara0815
- · Replies 4 ·
Where does the x² come from in the spring potential energy formula?
- Alec
- · Replies 2 ·
Looking for Problems in Classical Mechanics
- P3X-018
- · Replies 5 ·
Improve Your Test Review: Solving for Final Angular Speed with a Spinning Mass
- fishingaddictr
- · Replies 4 ·
Why do astronauts feel weightless in orbit?
- parwana
- · Replies 2 ·
How Do Echoes from Large and Small Insects Compare from a Bat's Perspective?
- Checkfate
- · Replies 2 ·
Increasing speed by 5 mph saves 10 mins?
- KingNothing
- · Replies 3 ·
Ref. index of differnet concentrations of glucose
- blackcat
- · Replies 4 ·
Finding Force of Air resistance
- anonymouz
- · Replies 14 ·
Gravitational pull on probe between the Sun and the Earth
- bearhug
- · Replies 1 ·
Energy from 0.2698 moles of sodium atoms emitting at 589nm
- Sephiroth2088
- · Replies 1 ·
Work done compressing leaf and helper springs on a truck
- alexkolb
- · Replies 5 ·
involving force and Newtons laws
- Cicima
- · Replies 3 ·
Calculate Path Length of Wheel Rotation at 30°, Rad, Rev
- BunDa4Th
- · Replies 4 ·
Calculate Tension in Cable for 225 kg Square Sign Hanging from 3.00 m Rod
- bearhug
- · Replies 1 ·
Net Torque for Constant Velocity Bike Gear Problem
- courtney1121
- · Replies 3 ·
Work done when tripling distance between two particles
- bearhug
- · Replies 3 ·
Net force on cyclist at finish line of circular race
- SA32
- · Replies 2 ·
Gravitational acceleration above the Earth's surface
- bearhug
- · Replies 1 ·
How Much Torque Does a Person Exert on a Ladder?
- courtney1121
- · Replies 10 ·
Why Did a Real Image Appear at 136cm in a Converging Lens Experiment?
- jnimagine
- · Replies 1 ·
Measuring the Height of a Lighthouse with a Pendulum
- Forceflow
- · Replies 2 ·
What percentage of spring energy is kinetic at half amplitude?
- go2cnavy
- · Replies 1 ·
More Simple Harmonic Oscillations
- ubbaken
- · Replies 1 ·
Calculate Force of Bike Tires with Brakes
- Vyce
- · Replies 8 ·
Minimum Barge Length for Forced Plane Landing
- richievuong
- · Replies 3 ·
Why Doesn't a Dropped Ball Bounce Back to Its Original Height?
- B Cass
- · Replies 2 ·
Swimming across a 200 m river with a 3 m/s current
- pharaoh
- · Replies 3 ·
What Formula Should I Use for Calculating Vector Components in Physics?
- katie_08
- · Replies 3 ·
Finding coefficient of kinetic friction for a skidding car
- pharaoh
- · Replies 2 ·
2 centripetal acceleration problems
- kcskcskcsyes
- · Replies 2 ·
Turning the Corner Circular Motion
- VidaMarie01
- · Replies 4 ·
Skier accelerating down a 37-degree slope with friction
- hchayer88
- · Replies 1 ·
How Can Net Force Be Zero When Net Torque Isn't, and Vice Versa?
- parwana
- · Replies 2 ·
Maximize Mousetrap Car Performance for Physics Project
- katie_08
- · Replies 3 ·
Understanding Force and Mass in Kangaroo Jumps
- danield
- · Replies 3 ·
Absolutely no idea how to solve these
- evildarklord1985
- · Replies 1 ·
Does a Spring Stretch More When Attached to an Immovable Wall or When Detached?
- hatingphysics
- · Replies 1 ·
Working out internal resistance.
- Energize
- · Replies 2 ·
Measuring the Gravitational Constant
- bearhug
- · Replies 1 ·
Calculate F(net): Net Force Acting on Cyclist at Finish Line
- Canadian
- · Replies 1 ·
How long does it take to fall to the center of the earth?
- raul_l
- · Replies 2 ·
Designing a Space Station: Calculate Rotational Motion
- PascalPanther
- · Replies 3 ·
What is the rotational inertia of a model rocket attached to a rigid rod?
- rage_pandora
- · Replies 6 ·
What is the average velocity of the molecules in a gas?
- CathyLou
- · Replies 4 ·
Speed Ratio of Displaced Mass M: v/V = 2
- wolovemm
- · Replies 1 ·
Roling vs Sliding Down an incline
- Kalie
- · Replies 1 ·
Momentum of flashlight in intergalactic space
- opticaltempest
- · Replies 1 ·
What is the ratio between tensions in different positions for a swinging ball?
- konichiwa2x
- · Replies 4 ·
How High and How Long Does an Object Thrown Upward at 50 m/s Travel?
- Alpha[X]²
- · Replies 6 ·
Differentiation with physics things
- kirstian90
- · Replies 2 ·
So easy, but I just can't grasp this.
- takoma
- · Replies 10 ·
Does balancing a meter stick on a fulcrum prove torque sums to zero?
- Phil7860
- · Replies 1 ·
Projectile question involving Law of Conservation of Energy
- leighzer
- · Replies 1 ·
Impulse and Momentum (finding net force)
- acra
- · Replies 1 ·
One and Two Dimension collisions
- clippers0319
- · Replies 3 ·
Calculating Momentum for a Slap Shot in Hockey
- Chutzpah
- · Replies 3 ·
Equilibrium Applications of Newton's Laws of Rotation
- SUchica10
- · Replies 1 ·
Solving for final velocities in elastic collision between 5kg and 7.5kg balls
- clippers0319
- · Replies 2 ·
Doppler's effect for two trains
- physgirl
- · Replies 10 ·
Understanding Momentum in Rotational Motion
- Whitebread1
- · Replies 7 ·
Calculating Moment of Inertia for Simple Function
- americanforest
- · Replies 6 ·
Elevator acceleration from scale readings at 800 N and 400 N
- Cicima
- · Replies 5 ·
Motorboat accelerating from two perpendicular forces in 10 seconds
- Cicima
- · Replies 11 ·
How far does the center of mass lie from the center of the earth?
- rmarkatos
- · Replies 4 ·
Am i correct in getting a low value?
- madglover
- · Replies 2 ·
How Do Conservation Laws Apply to a Collision and Subsequent Motion?
- merlos
- · Replies 7 ·
How Does Acceleration Work in Reaching Maximum Speed?
- Raza
- · Replies 5 ·
Question involving LAWS OF WORK
- demode
- · Replies 2 ·
Can Changing Mass and Design Improve Ball Aerodynamics?
- GreenSabbath
- · Replies 5 ·
Tension Troubles: Understanding Mass and Force
- catenn
- · Replies 2 ·
Impulse and Momentum: Find Common Velocity & Fraction of Kinetic Energy
- rmarkatos
- · Replies 4 ·
How does straightening up in a half-pipe increase velocity?
- Dorothy Weglend
- · Replies 4 ·
Angular Quantities: Calculating Revolutions
- catenn
- · Replies 2 ·
Conservation of Linear Momentum of astronaut
- rmarkatos
- · Replies 1 ·
Err, two questions related to center of gravity and friction
- YenTe
- · Replies 1 ·
Kinetic Energy Not Necessarily Equal w/ Same Momentum
- rmarkatos
- · Replies 1 ·
How can I calculate the elongation of a steel rod in an amusement park ride?
- superdave
- · Replies 2 ·
Calculate Bird's Average Acceleration
- quickslant
- · Replies 1 ·
Velocity of a cork fired from a cork gun
- esoteric deviance
- · Replies 13 ·
Where is the Center of Mass of a Doughnut Located?
- rmarkatos
- · Replies 4 ·
How Do You Calculate the Mass of the Sun from Mars' Orbital Motion?
- quickslant
- · Replies 1 ·
What is the minimum length of chain that must hang down for it to begin sliding?
- Dorothy Weglend
- · Replies 10 ·
Calculating Stopping Time and Distance on a Slope with Kinetic Friction
- quickslant
- · Replies 8 ·
What is the magnitude and angle of this complex number?
- hanhao
- · Replies 4 ·
Ice Cube Pressure on Incline: Solve for F
- brncsfns5621
- · Replies 1 ·
How to Calculate Rotational Inertia and Angular Momentum?
- JB83
- · Replies 2 ·
Calculating Wattage of a Light Bulb in a Soot-Covered Room
- ritwik06
- · Replies 3 ·
Conservation of Energy in Elastic Collisions: Solving for Initial Velocity
- joejoe333
- · Replies 4 ·
Conservation of Energy pinball problem
- SamTsui86
- · Replies 2 ·
Where to place a converging lens between object and screen
- bananan
- · Replies 11 ·
Collision of boulder and ice-fishing shack
- rabi
- · Replies 2 ·
Vector addition, magnitude, and relative velocity in wind
- Mike_Winegar
- · Replies 5 ·
Initial Velocity Question
- MaNiFeST
- · Replies 62 ·
Angular momentum - can you start spinning while falling?
- hatingphysics
- · Replies 1 ·
Graphing software recommendations for physics data
- oksanav
- · Replies 6 ·
How to Find a Gymnast's Speed at the Bottom of a Swing?
- djherse
- · Replies 2 ·
Time and height for ball thrown upward and bullet fired
- A.I. BOT
- · Replies 5 ·
KE Work-Energy Theorem Problem question
- djherse
- · Replies 11 ·
Can string diameter affect wave speed in guitar strings?
- map7s
- · Replies 3 ·