Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
What are the masses of two objects given their velocities and total momentum?
- MarineBio
- · Replies 5 ·
The Work Done in Pulling a Supertanker
- rock_star
- · Replies 4 ·
Sphere rolling down a ramp problem
- iamtrojan3
- · Replies 5 ·
Moment of Inertia of slender rod
- Amar.alchemy
- · Replies 16 ·
Change in kinetic energy Velocity not given
- rock_star
- · Replies 3 ·
Kinetic Friction of ride down a ramp
- MarineBio
- · Replies 5 ·
Newton's Third Law of Motion and car collision
- Ki-nana18
- · Replies 4 ·
The Electric Field: Understanding its Negative Gradient
- jeff1evesque
- · Replies 5 ·
How Do You Calculate the Minimum Coefficient of Friction for a Banked Curve?
- nickmai123
- · Replies 1 ·
Deflection of a particle between two plates
- sw1mm3r
- · Replies 10 ·
Mean free path at low temperatures
- Armandito
- · Replies 1 ·
Electric Field of a Spherical Shell w/ Uniform Charge Density
- bodensee9
- · Replies 5 ·
How can I graph the current and voltage values for a diode using Ohm's Law?
- JakePearson
- · Replies 2 ·
Finding Length with rpm and static friction
- orange03
- · Replies 7 ·
What Is the Average Force Exerted by Water on a Diver?
- xicedcandyx
- · Replies 9 ·
A pole, 2 lightyears in length - conceptual question
- vorcil
- · Replies 46 ·
What questions can you use the quadratic formula for?
- JakePearson
- · Replies 4 ·
Weight of a 1.02m x 2.05m Door Supported by Two Hinges
- guille1
- · Replies 1 ·
Finding electron speed in ionized helium using Coulomb's law
- ken19
- · Replies 1 ·
Coin dropped in moving car: forces, acceleration, and reference frames
- graphicer89
- · Replies 4 ·
How Does Capacitor Configuration Affect the RC Circuit Time Constant?
- runfast220
- · Replies 2 ·
Which way would the tricycle go?
- MarkChoo
- · Replies 3 ·
Force on Loop Due to Infinite Wire?
- zd1899
- · Replies 9 ·
Calculating Average Thrust Force for Airplane Take-off
- BlueOwl
- · Replies 4 ·
Acceleration of the system and the tension T in the string
- blackboy
- · Replies 2 ·
Car on banked curve with Friction
- luckee
- · Replies 1 ·
Solving Word Problem: Elevator Acceleration of 145 lb to 122 lb
- BlueOwl
- · Replies 5 ·
How to Determine Dimensional Formulae?
- JakePearson
- · Replies 10 ·
Find frequency and period of oscillation
- gpat
- · Replies 1 ·
How to prove this equation mathematically (light / optics)
- Daisuke
- · Replies 5 ·
Magnitude of tangential and normal acceleration vectors
- jeff1evesque
- · Replies 1 ·
Why Does the Second Harmonic Frequency Double in a Fixed Rope?
- test2morrow
- · Replies 1 ·
Heat and Mass: Raising Ice and Water Temperatures
- test2morrow
- · Replies 1 ·
Minimum thickness of antireflective coating for 661 nm light
- OsDaJu
- · Replies 3 ·
Wavelength of surface waves in terms of surface tension, density and frequency
- pisiks
- · Replies 1 ·
Force Vector Problem: Find Magnitude of Force on Rider from Motorcycle
- Elmnt
- · Replies 4 ·
Finding sphere radius containing 90% of field energy from charged shell
- bodensee9
- · Replies 5 ·
Spinning flywheel on rotating table with springs (Kleppner 7.2)
- Sam_Goldberg
- · Replies 8 ·
Easier Way to Simplify log_3 3x?
- JakePearson
- · Replies 1 ·
How to Simplify Logarithmic Equations?
- JakePearson
- · Replies 4 ·
What is the thickness of the paper in this interference experiment?
- Matt1234
- · Replies 1 ·
Circular orbit VS Elliptical orbit? Differences?
- graphicer89
- · Replies 2 ·
Proving Horizontal Component of Tension in Stationary Chain
- RoyalCat
- · Replies 2 ·
What Is the Period of a 50-g Weight in Uniform Circular Motion?
- Paulbird20
- · Replies 12 ·
Projectile launched vertically from Moon: altitude at 3/4 initial speed
- tgvaughn
- · Replies 8 ·
Calculate Torque in 12.2m Crane - 18kN Load, 67kN Tension
- xicedcandyx
- · Replies 5 ·
Specific heat capacity
- fani98
- · Replies 1 ·
Exponential relationships to logarithms and straight line graph?
- JakePearson
- · Replies 2 ·
Power of atmosphere and skyscraper windows?
- graphicer89
- · Replies 5 ·
How Does Velocity Affect String Tension in Circular and Parabolic Motion?
- songoku
- · Replies 26 ·
Grasshopper Jumps Between Two Cars Before Collision
- rado5
- · Replies 20 ·
What is a Conservative System in Classical Mechanics?
- fortaq
- · Replies 4 ·
MY First Post what force is exerted on a astronaut in space that ?
- graphicer89
- · Replies 3 ·
Logarithmic decrement for torsional pendulum with 13% amplitude after 100 cycles
- tone999
- · Replies 1 ·
Peter and Margeret skating: KE, momentum, force and power
- ride4life
- · Replies 2 ·
How Do Magnetic Fields Orient Around Parallel Conductors?
- 9giddjl
- · Replies 4 ·
Angle between a force and radius?
- TexasCow
- · Replies 11 ·
Conservative Forces and Friction
- MarineBio
- · Replies 2 ·
Gravitation multiple particle system
- Puchinita5
- · Replies 1 ·
Light intensity of a flashlight?
- superbnchic
- · Replies 9 ·
What is the Original Speed of Linked Objects in Two Dimensions?
- tiffanysnsd
- · Replies 15 ·
How high will a stone shot from a slingshot go?
- colachuu
- · Replies 7 ·
Solving for Minimum Angle for Home Run
- jazz20
- · Replies 1 ·
Charge Density (Relaxation Time)
- jeff1evesque
- · Replies 8 ·
What is the drag coefficient of the cue ball
- Paulbird20
- · Replies 8 ·
Nonconservative work and a slide
- pttest
- · Replies 2 ·
How long would it take to count all the atoms in
- phartnett
- · Replies 3 ·
Tension Equation Question - Algebra Related
- crono_
- · Replies 2 ·
Determining instantaneous velocity and average velocity using a graph.
- Crescent
- · Replies 2 ·
Does moving charge in an electric field count as Ohm's law?
- jsalazar
- · Replies 13 ·
A lot of questions about statics
- RoyalCat
- · Replies 15 ·
Electron deflection between parallel plates with 120 N/C field
- mvk1
- · Replies 11 ·
How does change in current induce electromotive force
- jeff1evesque
- · Replies 3 ·
Electric field from a line of charge
- midge
- · Replies 1 ·
Calculate Charge on Each Sphere: Force and Total Charge Given
- jmb07
- · Replies 5 ·
What is the tension in the rope problem?
- pttest
- · Replies 3 ·
Energy lost by speeding car while drinving on a soft surface
- emusheyev
- · Replies 3 ·
What is the tension in each part of the rope
- donotremember
- · Replies 6 ·
Tension in bow string when pulled with 30.0 lb force at 126° angle
- rock_star
- · Replies 2 ·
I don't get something about the speed wave equation
- AznBoi
- · Replies 10 ·
Checking Conversion Accuracy for Frequency and Inductance Calculations
- physics10189
- · Replies 4 ·
Determining Initial Speed of Electron in Head-On Collision
- Matt1234
- · Replies 5 ·
Solve Torque Confusion: Find D to Snap Cable in Fig. 12-35
- Puchinita5
- · Replies 3 ·
Point where electric field from two charges is zero
- Matt1234
- · Replies 7 ·
Plate - E - Plate (Reasoning Needed more than Answer)
- exitwound
- · Replies 11 ·
What is the effect of friction on the orbit of a satellite?
- bodensee9
- · Replies 11 ·
F = ma also equals to F = mg? F = Fa - Ff?
- Physlithium
- · Replies 8 ·
Time-harmonic functions (Complex Vectors)
- jeff1evesque
- · Replies 12 ·
Complex Conjugates: I'm Not Sure Why V^2?
- jeff1evesque
- · Replies 1 ·
Cannonball Question Solved - 200m Target Hit?
- juliany
- · Replies 2 ·
MCQ: Potentiometer: Balanced Length, Resistance of Cell E
- leena19
- · Replies 6 ·
What is the Effect of Dimpled Surfaces on Rolling Friction?
- Meggett
- · Replies 12 ·
Harmonic Function (time averages) II
- jeff1evesque
- · Replies 1 ·
Refrigerator power rating and heat absorption
- nrweis
- · Replies 4 ·
Train climbing 5 km track with 40 m rise: work-energy equation
- ln85
- · Replies 1 ·
Friction and tension force- mass
- Paulbird20
- · Replies 3 ·
What is the Contribution of Segments AB and CD to the Magnetic Field at Point O?
- peaceandlove
- · Replies 1 ·
The electric potential difference created by point charges.
- xkelleh
- · Replies 2 ·
Energy lost when reconnecting charged capacitors with opposite polarities
- wcelectric
- · Replies 7 ·