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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Two charges hanging on strings
- catch22
- · Replies 10 ·
How to solve the x' and y component force
- low9009
- · Replies 5 ·
Fundamental frequency if string halved and tension * 4
- moenste
- · Replies 1 ·
How Does an Equilateral Triangle Affect Electric Fields on Its Axis?
- various45
- · Replies 5 ·
Calculating Spring Constant and Forces in an Electromagnetic System
- NooDota
- · Replies 15 ·
Thermal coefficients of expansion
- Brian13
- · Replies 5 ·
How to get maximum electrostatic force?
- catch22
- · Replies 18 ·
How to Separate Variables for the Schrodinger Equation in Two Dimensions?
- Abdul.119
- · Replies 21 ·
At what point is the system in equilibrium?
- catch22
- · Replies 3 ·
Skating ramp, only height given. Kinematic equations.
- LogarithmLuke
- · Replies 6 ·
Can Visible Photons Occur From -60.0 eV Electron Transitions?
- ConorDMK
- · Replies 1 ·
Are all damped oscillations periodic?
- Himanshu_6174
- · Replies 1 ·
What is the equation for calculating displacement based on acceleration?
- 24forChromium
- · Replies 2 ·
How Does an Oil Deposit Affect Gravitational Acceleration?
- Geoesque
- · Replies 17 ·
How do I plot ψ(x,t) as a function of x at time t=a/v?
- whatisreality
- · Replies 1 ·
Just to double check, Linear Momentum
- SimplyTev
- · Replies 1 ·
How far does the ball go down the ramp
- Entr0py
- · Replies 6 ·
Thermodynamics question thanks so much for the help
- noah kessler
- · Replies 1 ·
How Does Torque Apply When Using a Screwdriver or Nut Driver?
- goldfish9776
- · Replies 1 ·
Uniform Circular Motion for rubber stopper
- Tim Wellens
- · Replies 2 ·
Question regarding decay, protons and neutrons
- ezach1
- · Replies 12 ·
Understanding the Motion of a System: Analyzing Gravitational Interactions
- kolua
- · Replies 16 ·
Need verification of an equation
- Hatesmondays
- · Replies 4 ·
Is negative potential energy actually meaningful?
- kostoglotov
- · Replies 16 ·
How do I find the normal modes of massless string w/ masses?
- ChickenTarm
- · Replies 3 ·
Single conservative force acting on a particle
- Robb
- · Replies 4 ·
Physics peak wavelength and temperature
- ezach1
- · Replies 29 ·
Mechanics, degree of freedom question
- yugeci
- · Replies 1 ·
Add Vectors: 55km South + 34km North
- cvc121
- · Replies 1 ·
Solving an Exercise Involving Particle P Moving Along the X-Axis
- PhoenixWright
- · Replies 3 ·
Calculating the magnitude of the electric field
- Barry Melby
- · Replies 2 ·
Gravitational force of a basketball to a golf ball
- kolua
- · Replies 4 ·
[Uni Physics 2] Inductance Problem
- jonathanlv7
- · Replies 1 ·
How Do Driven Vibrations Impact a Seismometer?
- eng.physicsbr
- · Replies 1 ·
Work and energy in simple harmonic motion concept
- **Mariam**
- · Replies 1 ·
Thermodynamics - Work/Heat question
- Milsomonk
- · Replies 1 ·
Using heat pump to make a house heater
- Pouyan
- · Replies 2 ·
Calculate Velocity: Initial Radial Velocity 0.325 m/s
- Granger
- · Replies 13 ·
Help please -- Free body diagram for a weightlifter?
- jujuju
- · Replies 1 ·
Capacitors in a series circuit W/ one dielectric
- Nemo_Sol
- · Replies 1 ·
Solving Spring Tasks: Plotting Graphs and Calculating Spring Constants
- leloup
- · Replies 2 ·
How is Work and Power Calculated in These Scenarios?
- pranav9189
- · Replies 1 ·
Equivalent focal length of two lenses
- Potatochip911
- · Replies 2 ·
Inelastic Collision of drunken driver
- rose3
- · Replies 7 ·
Projectile Launched at an Angle: Velocity
- hawkeye1029
- · Replies 11 ·
Movement of object when F more than Fs
- werson tan
- · Replies 1 ·
Need confirmation for spring mass system question
- ozbii
- · Replies 1 ·
Find velocity of an accelerated proton using kinetic energy
- Tiggy B
- · Replies 11 ·
Moment Direction: 560sin30 (0.25) Explained
- werson tan
- · Replies 5 ·
Why are there no signs indicating prevention of rotation in this diagram?
- werson tan
- · Replies 10 ·
How Much Force Does the Larger Trunk Exert on the Smaller Trunk?
- Sace Ver
- · Replies 9 ·
Amplitude and Vibrations in Springs
- RoyceB
- · Replies 6 ·
How do you compute an average mass for Jupiter?
- Haley Feider
- · Replies 6 ·
Determining velocity for a pulley/rope system
- Katatatat
- · Replies 1 ·
Finding time and distance with NLM.
- Sace Ver
- · Replies 7 ·
Why are there no moment restrictions shown in the diagram for this case?
- werson tan
- · Replies 2 ·
Fluid Mechanics: Weight vs Pressure
- Prannoy Mehta
- · Replies 6 ·
Calculating Electric Field from Electron Drift and Diffusion in Si Sample"
- orangeincup
- · Replies 1 ·
Do motors have some voltage drop across them
- Grim Arrow
- · Replies 6 ·
Why there is NO current in a PN junction under equilibrium
- Amal Thejus
- · Replies 5 ·
Need help calculating angular velocity
- san512
- · Replies 13 ·
Why Is There a Discrepancy in Kinetic Energy Calculations for SHM?
- NooDota
- · Replies 13 ·
Calculate the coefficient of kinetic friction for a sliding box
- Sace Ver
- · Replies 25 ·
Potential in a double vertical spring-mass system
- Ffop
- · Replies 5 ·
How to devise moment of inertia formula of solid sphere?
- imadrea
- · Replies 3 ·
Anticlockwise Moment & Force Direction: Why the Change?
- goldfish9776
- · Replies 14 ·
Optimum gap size for diffraction
- The_Nster
- · Replies 5 ·
Direction of reaction of a roller
- werson tan
- · Replies 5 ·
Partition Theorem Homework: Solving for the Partition Function and Energy States
- Calpalned
- · Replies 1 ·
Common proofs? (studying for an exam)
- Helphelphelp
- · Replies 1 ·
Kinetic energy of electron: Quantization of angular momentum
- yeshuamo
- · Replies 1 ·
Does Kinetic Energy Apply to Bullets in Ballistics?
- Guapa
- · Replies 4 ·
Young's slit: find wavelenght, double slit separation
- moenste
- · Replies 2 ·
Electromagnetic Induction in a moving DC circuit
- Math Fixxer
- · Replies 4 ·
Why does a pin support only have reactions towards the pin?
- goldfish9776
- · Replies 1 ·
What Was Alice's Speed When Bob Caught Up?
- Physiks2
- · Replies 3 ·
Lead pellet shot vertically into a clay block
- Janiceleong26
- · Replies 7 ·
Dynamics - Pulley System with Rotating Rod
- bonannic
- · Replies 4 ·
Simple question on Laplace's Equation (electrostatics)
- Abdul.119
- · Replies 1 ·
Understanding distances, derivatives, and integrals help?
- Monkey D. Luffy
- · Replies 4 ·
What is the Net Force on Charge Q1 in a Right Triangle Configuration?
- Dodsy
- · Replies 11 ·
Power transformed when resistance is zero and infinite
- Janiceleong26
- · Replies 8 ·
Direction of Current in a Coil with Magnetism: Double Checking
- ElegantSir
- · Replies 1 ·
Centripetal Motion Question (Two Blocks Stacked)
- ImpulseLeaq
- · Replies 17 ·
What Is the Correct Angle Between Two Vectors If Their Cross Product Is Known?
- Tarrok
- · Replies 1 ·
How Does Current Flow Through an N-Channel MOSFET?
- Dembie
- · Replies 2 ·
Magnetic field uniformity problem
- Callix
- · Replies 7 ·
Two blocks on a plane with a pulley
- jeff12
- · Replies 11 ·
Stable Equilibrium of Stacked Hemispheres
- kitsh
- · Replies 1 ·
X-ray graph (characteristic X-rays)
- Matejxx1
- · Replies 4 ·
A electron cyclotron has a frequency of 2450 Hz and a magnet
- anthonyslvtr
- · Replies 3 ·
Why does the mud fly off tangentially from a rotating plate?
- PhysicStud01
- · Replies 23 ·
Distance of the final image in a compound microscope
- moenste
- · Replies 3 ·
Circuit Problem -- Two voltage sources and some resistors
- ellatha
- · Replies 14 ·
Prove inelastic collision loses the most KE?
- Chickensalad
- · Replies 1 ·
Rotational Forces on a Hollow Cylinder
- Ben Reynolds
- · Replies 4 ·
What Is the Total Work Done on a Cyclist Ascending an Incline?
- student34
- · Replies 15 ·
Particle Motion in Uniform Electric and Magnetic Fields
- Tachyon_Jay
- · Replies 2 ·
Finding the Force for Constant Velocity with Kinetic Friction
- Leedle
- · Replies 7 ·