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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Electric Potential/Energy question
- Flaming Toilet
- · Replies 1 ·
Building an all-wood human-powered car with wooden drive transmission
- amt86
- · Replies 3 ·
Solving a Problem: Car Speed When Driver Slammed Brakes
- kbrowne29
- · Replies 3 ·
Hard time getting the volume of the boat
- tucky
- · Replies 2 ·
Derive the equation Vi/Vtot = robject /rfluid
- Joe Ramsey
- · Replies 2 ·
Finding Magnitude of Momentum and Change in Momentum
- ACLerok
- · Replies 8 ·
Motor raising a mass over a pulley with given tension and moment of inertia
- Corky
- · Replies 5 ·
Finding wire resistivity from resistance, length and area
- thunderstorm
- · Replies 1 ·
Momentum Problem and final velocities
- Foon
- · Replies 2 ·
What Physics Principles Explain the Safe Drop of an Egg from a 5-Story Building?
- gr8one626
- · Replies 5 ·
How Do Cepheid Variable Stars Illuminate Distance Calculations in Astronomy?
- Morpheus
- · Replies 2 ·
Desperately with physics project (building a motorized drawbridge)
- LtSparky
- · Replies 2 ·
Creating a Contraption to Protect a Raw Egg from Impact
- ccb056
- · Replies 2 ·
Rotating 1/x to make a hyperbola?
- Khan
- · Replies 1 ·
Mechanical Reversibility vs Thermodynamical Irreversibility
- Batman
- · Replies 2 ·
How Does Hooke's Law Affect Wave Propagation in Stretched Rubber Bands?
- DivGradCurl
- · Replies 2 ·
Two linked disks: moment of inertia, angular acceleration, and tension
- pezzang
- · Replies 11 ·
Solve Motion and Friction Problem: Estimate Car Speed When Brakes Applied
- latte
- · Replies 5 ·
Electrostatic force between two charged pith balls at equilibrium
- Inquiring_Mike
- · Replies 1 ·
Waves - I just need to confirm an idea
- DivGradCurl
- · Replies 1 ·
How to Solve Momentum Problems in Collisions
- SEG9585
- · Replies 10 ·
What is the mass of the string?
- timtng
- · Replies 2 ·
Pendulum differential equation question
- okalakacheekee
- · Replies 5 ·
Truss - how are forced transfered
- omgitsroy326
- · Replies 2 ·
Calculating the Mass of the Galactic Center with Kepler's Third Law
- Morpheus
- · Replies 3 ·
What is the total momentum of a high school discus thrower's throw?
- leftdalltheway
- · Replies 11 ·
How many g of ice melt before thermal equilibrium is attained
- cathliccat
- · Replies 2 ·
How Is the Formula for Centripetal Acceleration Derived?
- Lindsey
- · Replies 2 ·
Boulder falling from cliff: last 1/3 of fall takes 1.5 seconds
- accesskb
- · Replies 3 ·
Force needed to push a box off a cliff
- paigegail
- · Replies 2 ·
Calculating Orbital Periods in Saturn's Rings
- solo
- · Replies 3 ·
Can viral mutation demonstrate that evolution is true?
- zeronem
- · Replies 2 ·
Air flow speed at top of airplane wing
- kashmirekat
- · Replies 2 ·
Centripetal acceleration of a car in a loop
- star56
- · Replies 1 ·
Question 1st law of Thermodynamics
- kuwait
- · Replies 2 ·
Why are the arcs unequal on a circle through an equilateral triangle?
- wubie
- · Replies 5 ·
How Do You Calculate the Center of Gravity for a Carpenter's Square?
- Nanabit
- · Replies 2 ·
How to Calculate Tension and Acceleration in a System of Connected Masses?
- RickT
- · Replies 3 ·
What is the decrease in kinetic energy during the collision?
- mustang
- · Replies 2 ·
Tractor towing a 4300 kg trailer up a 26° incline at steady speed
- izmeh
- · Replies 12 ·
Relative Motion of a moving sidewalk
- aragornbird
- · Replies 2 ·
Formula for the harmonic oscillator is f"(x)+W^2 * X(t)=0
- Chiara
- · Replies 1 ·
Calculating Initial Speed of Bullet After Collision with Spring-Mounted Block
- PiRsq
- · Replies 6 ·
Manipulating Data to Create a Linear Graph for Circular Motion Experiment
- tonogai40
- · Replies 1 ·
Fluid Mechanics and Styrofoam slab
- vmind
- · Replies 3 ·
Measuring Gravity: Finding Accurate Results for Your City
- Meab5
- · Replies 2 ·
How Does Mass and String Length Affect Rotational Dynamics?
- kamoey
- · Replies 2 ·
Fluid Mechanics of helium-filled balloon
- vmind
- · Replies 3 ·
What Are the Equations to Solve a Ladder's Minimum Angle Problem with Friction?
- wolfgarre
- · Replies 2 ·
Doppler effect ball throw question
- andytran
- · Replies 4 ·
Solve Equilibrium Problem: Biceps Force at Elbow
- timtng
- · Replies 2 ·
Vertical angles theorem for intersecting lines
- wubie
- · Replies 6 ·
Applying to MIT: What GPA is Necessary?
- The_oMeGa
- · Replies 2 ·
Key concepts for kinematics and dynamics midterm
- coglon
- · Replies 1 ·
Two equal mass carts colliding head-on at the same speed
- game
- · Replies 4 ·
Voltmeter Measurement: Peak vs RMS?
- discoverer02
- · Replies 4 ·
Finding epicenter distance from P and S wave arrival times
- tristan_fc
- · Replies 4 ·
Formula for atmostpheric pressure
- mattmns
- · Replies 11 ·
Spring loaded collisionneed some guidance
- Juntao
- · Replies 3 ·
What Are the Next Steps in Solving This Physics Problem?
- paigegail
- · Replies 2 ·
Looking for an Experiment about water
- mmcoelho
- · Replies 4 ·
Horizontal force applied to push box off 12.96 m cliff
- paigegail
- · Replies 2 ·
How Can I Solve This 2 Part String Problem in Physics?
- Aaron8153
- · Replies 2 ·
How Does Windmill Power Depend on Blade Diameter and Wind Speed?
- tandoorichicken
- · Replies 2 ·
How Does Friction Affect the Speed of a Toy Cannon Ball?
- wachaif
- · Replies 2 ·
Non-harmonic oscillatory motion
- Nitrus
- · Replies 2 ·
What is the current I in a wire that repels an electron at a certain distance?
- happy thoughts
- · Replies 5 ·
What Forces Have You Experienced That Follow the Inverse Square Law?
- Inquiring_Mike
- · Replies 1 ·
A jet transport has a weight of 2.97 x 106 N and is at rest on the runway
- moonlit
- · Replies 7 ·
L2 transformation reduces to the L1 transformation
- Pyrokenesis
- · Replies 4 ·
How Is the Formula for Kinetic Energy Derived?
- Haftred
- · Replies 5 ·
Solving Recoiling Problem: Mass, Angle, and Velocity Calculations
- rdn98
- · Replies 5 ·
Tension in a Rope: Understanding Acceleration in Lifting a Bucket of Water
- izmeh
- · Replies 5 ·
A couple problems with angular momentum
- Nanabit
- · Replies 2 ·
Pig on a slide Friction Problem
- Kharmon7814
- · Replies 4 ·
Why Does a Pulley System Show Different Tensions for Different Masses?
- Psi
- · Replies 2 ·
DC Motor Problem - Magnetic Field Calculation
- Shahil
- · Replies 2 ·
Bullet embedded in block, car-truck crash, and collision with stuck vehicles
- ScoutFCM
- · Replies 2 ·
Solve Checkers Problem: 8x8 Board, 7 Moves, Many Paths
- Chaotic Boredom
- · Replies 2 ·
Rate of Heat Output to Low-Temp Res per Cycle: 450J
- fish
- · Replies 2 ·
What is the tension in the cable
- physicszman
- · Replies 5 ·
How Can You Calculate the Acceleration Due to Gravity?
- mattmate
- · Replies 5 ·
How Do You Solve Newton's Laws Problems for a Sailboat and a Pickup Truck?
- Alethia
- · Replies 2 ·
Ferris Wheel Weight Calculation
- Kharmon7814
- · Replies 2 ·
What Determines the Maximum Speed of a Ball Fired from a Toy Cannon?
- wachaif
- · Replies 2 ·
Calculating Gravitational Potential Energy in a Swinging Child
- floydzeppelinfan
- · Replies 2 ·
Tension and Friction problem, i
- zm87
- · Replies 4 ·
Validation of a Work/Energy Problem
- Mattchu
- · Replies 7 ·
Where can I find information about string theory?
- daodude1987
- · Replies 2 ·
Why Does the Moon Take 6 Hours to Pass Through the Earth's Penumbra?
- Math Is Hard
- · Replies 3 ·
How great of a force is required?
- ACLerok
- · Replies 13 ·
Calculating Angle of Fuzzy Dice with Acceleration
- Kharmon7814
- · Replies 2 ·
Applying the Product Rule to a Non-Differentiable Function
- StephenPrivitera
- · Replies 3 ·
Where on a rod should a weight be suspended for equal stresses or strains in two wires?
- broegger
- · Replies 2 ·
Work done on a crate with friction and applied force
- Alethia
- · Replies 6 ·
Time for a spinning disk to stop due to friction
- timtng
- · Replies 2 ·
Equilibrium Problems Kc = .090: Calculating Concentration
- marioland
- · Replies 1 ·
Is Any Dynamical Variable's Infinitesimal Transformation Canonical?
- Lotophage
- · Replies 2 ·