Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Normal Force and Acceleration down the slope
- lazyguy91
- · Replies 1 ·
Doppler Effect Wind: Frequency, Velocity, Wavelength
- sachin123
- · Replies 3 ·
Linear expantion and elastic modulus- brass vs. glass
- mmoadi
- · Replies 2 ·
Momentum and Energy problem (ball and incline collision)
- Idoke
- · Replies 5 ·
Heat loss problem- thermodynamics
- mmoadi
- · Replies 2 ·
Curvature of path made by electron in electromagnetism
- Mspike6
- · Replies 1 ·
Interferometer / Index of Refraction
- hm29168
- · Replies 6 ·
Transformer Voltage vs. Frequency
- sus4nx
- · Replies 1 ·
Calculating Material Thickness: 5k Ohms CSA 10mm x 20mm
- Kev1n
- · Replies 5 ·
Measurements with an Ammeter/Voltmeter
- jumbogala
- · Replies 1 ·
Rotational Motion and linear accerlation
- scoldham
- · Replies 16 ·
Average acceleration of a falling ball on contact with floor
- bryansonex
- · Replies 2 ·
Block sliding down an inclined plane and gravity
- tbcreighton
- · Replies 3 ·
Difficult: Linear vs. Angular acceleration
- datdo
- · Replies 8 ·
Calculating Tension on 500kg Beam Supported by Cable
- yankees26an
- · Replies 6 ·
Angular Momentum Homework: Magnitude of Object's L at (0,9,0)
- yankees26an
- · Replies 7 ·
What is the magnetic field produced by an electron beam in a cathodic ray tube?
- fishingspree2
- · Replies 5 ·
How to Calculate Coefficient of Kinetic Friction?
- HardestPart
- · Replies 3 ·
What is the angle of a falling object's velocity after 2 seconds?
- yankees26an
- · Replies 5 ·
Calculating the Force of Static Friction on a 2000kg Car
- yankees26an
- · Replies 4 ·
Work of Rope on Skier on 12° Incline: 900 J or 2,000 J?
- MIA6
- · Replies 3 ·
Food-energy to Mechanical Energy
- raiderIV
- · Replies 2 ·
Energy from the sun that reaches the earth
- Backup
- · Replies 4 ·
Calculating Average Net Force of 810-kg Car
- brncsfns5621
- · Replies 7 ·
Conservation of momentum & energy
- Jngo22
- · Replies 1 ·
How Is the Tangential Force Calculated in Rotational Dynamics?
- Swatch
- · Replies 7 ·
How Long Until Two Accelerating Cars Are 200m Apart?
- 1irishman
- · Replies 22 ·
Preparing for a Standardized Physics Test: Tips and Resources for Success
- DavidDishere
- · Replies 1 ·
Finding the Coefficient of Friction?
- Brodo17
- · Replies 2 ·
Solving Pulleys and Tension Problems
- Bluesroo
- · Replies 6 ·
Calculating Current in DC Motor at 11V, 2000 RPM
- farry1024
- · Replies 1 ·
Solving Torricelli's Law: Investigating a Bowl with a Hole
- sting10
- · Replies 1 ·
Crank-Nicolson method for a parabolic differential equation
- jamesponty
- · Replies 8 ·
Lenz's Law: Direction of Flux & Current
- defetey
- · Replies 1 ·
Santa Claus and his trouble on a ladder
- rpullo
- · Replies 2 ·
The physics of a swinging door
- Idrees
- · Replies 17 ·
Oscillation Period in a Lighthouse?
- wmrunner24
- · Replies 1 ·
How Can I Solve These Momentum Physics Homework Questions?
- physicsisfunn
- · Replies 1 ·
Sound intensity and the hearing distance
- mmoadi
- · Replies 7 ·
Why Does 0 Velocity and Negative Acceleration = Increasing Speed?
- Love_to_Learn
- · Replies 4 ·
Combining Formulas: Rearrange Equations for F (No Ev)
- gareth01422
- · Replies 5 ·
Modified Atwood's Machine on an Inclined Plane
- Labrack
- · Replies 3 ·
Minimum Coefficient of static friction to keep a block from sliding?
- Brodo17
- · Replies 2 ·
Placements of vector diagrams and angles in 2-D collisions
- JohnMC
- · Replies 1 ·
Creating the Graph of a Position Function
- Love_to_Learn
- · Replies 8 ·
KIRCHOFF's Law: Solving Circuit
- urduworld
- · Replies 8 ·
What is the Time Equation for Constant Acceleration?
- kriegera
- · Replies 6 ·
Which of these spring systems is equivalent?
- MarkH748
- · Replies 1 ·
Calculating Velocity Using Spring Force and Energy Conservation
- driven4rhythm
- · Replies 4 ·
Acceleration and velocity of a car
- skp123
- · Replies 5 ·
What was the speed before the collision?
- Fatentity
- · Replies 2 ·
How Much Coal Must Be Burned in a Steam Power Plant to Generate 900 MW?
- GreenPrint
- · Replies 37 ·
How Far Is the Moon from Earth?
- Blair08
- · Replies 6 ·
Objects falling towarda each other.
- E92M3
- · Replies 17 ·
Shooting a spaceship with a photon
- E92M3
- · Replies 3 ·
Rotating Coordinates Homework: Finding Force
- E92M3
- · Replies 2 ·
Potential Difference and Electric Potential
- johnnyies
- · Replies 3 ·
Second Law of Thermodynamics - Entropy
- Tynged
- · Replies 1 ·
RC and RL(frequency and potential difference)
- SAT2400
- · Replies 3 ·
Buoyancy of ship, volume displaced, and tension of crane (in/out) of water
- orbits
- · Replies 2 ·
Please help settle this dispute
- ideasrule
- · Replies 3 ·
Determining Forces of Moon & Sun on Mass m
- Trizz
- · Replies 11 ·
How much time has elapsed when the cars are 200m apart?
- 1irishman
- · Replies 10 ·
Simple Harmonic Motion: Oscillator
- TJC747
- · Replies 2 ·
Physics and Environment Questions
- HUgals
- · Replies 1 ·
Springs: Simple Harmonic Motion
- TJC747
- · Replies 1 ·
Calculating Heat and Time for 150g Water and 50g Ice System at 0C to Reach 100C
- Dan Feerst
- · Replies 7 ·
Simple Harmonic Motion: Spring Motion
- TJC747
- · Replies 1 ·
How Can I Solve the Rocket Motion Equation Numerically Using Maple?
- Dulle
- · Replies 1 ·
Net Force Required During Tiger-Rat Pursuit
- STL10
- · Replies 1 ·
Projectile Motion: Finding Initial Speed for Targeted Height
- bbhh
- · Replies 7 ·
Solving the Tug of War Problem: Man Moves 240m
- rent981
- · Replies 7 ·
What is the recoil speed of the rifle?
- jazzysoshort
- · Replies 4 ·
Simple Harmonic Motion: Pendulum
- TJC747
- · Replies 1 ·
How Much Force Does Water Exert on a Sandbag Dropped from 315m?
- Brittykitty
- · Replies 1 ·
Concept question, coil spring and energy.
- balletgirl
- · Replies 1 ·
What is the acceleration of a block on an inclined plane with friction?
- Gilded
- · Replies 5 ·
What Is the Maximum Oscillation Amplitude for an Ultrasonic Transducer?
- TJC747
- · Replies 1 ·
How do i work out the magnitude of a force
- ems1312
- · Replies 16 ·
How Do You Calculate the Moment of Inertia of a Spinning Disc with Added Mass?
- ems1312
- · Replies 3 ·
How Does the Doppler Effect Alter the Sound of a Horn from a Moving Truck?
- Moroni
- · Replies 2 ·
Calculating Centripetal Force for a Bull in Orbit
- Bjarne
- · Replies 3 ·
Caculating the tention, max accaleration and velocity of a violin string
- mmoadi
- · Replies 2 ·
Find the tension in the cable linking the two carts.
- ryty
- · Replies 3 ·
How Can I Solve This Dynamics Problem Involving Friction and Inclined Planes?
- JakePearson
- · Replies 4 ·
Physics & Chemistry: Pressure & Force Exam Prep
- itsascience
- · Replies 2 ·
Ski Slope using Energy Conservation
- merzperson
- · Replies 3 ·
How do I calculate the missing force on an aircraft?
- justice25
- · Replies 7 ·
Ballistic pendulum change in kinetic energy problem
- victoriafello
- · Replies 4 ·
Solving the Puzzle: Forces & Acceleration
- jamesdubya
- · Replies 22 ·
Calculating the Dipole Moment of LiBr
- stacker
- · Replies 3 ·
How Does a Block's Motion Change on an Inclined Ramp with Friction?
- justbreathe87
- · Replies 1 ·
Moment of inertia and conservation of energy problem
- knowlewj01
- · Replies 8 ·
Collinearity of Points: Solving the Equation
- thepopasmurf
- · Replies 2 ·
Concept of Potential Energy -vs Electric Potential in an EField
- Schoomy
- · Replies 1 ·
The Fundamental frequency of an open organ pipe
- jen0519
- · Replies 2 ·
Energy vs Momentum: Physics Examining the Difference
- aloshi
- · Replies 1 ·
A rebound and kinetic energy problem with a little specific heat
- redsmithers91
- · Replies 3 ·
Optimizing Boat Trajectory Across a River
- jamesdubya
- · Replies 12 ·
Solve for the Speed of a Car Using Doppler Effect - Homework Question
- meeklobraca
- · Replies 1 ·