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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Solve for the sum of 3 cable forces on one anchor point
- aatari
- · Replies 6 ·
How can I pluck strings (with changing length) with constant energy?
- mt1815
- · Replies 1 ·
Graphing the Power dissipated in a resistor
- guyvsdcsniper
- · Replies 1 ·
Particle scattering across a potential step boundary
- gionole
- · Replies 13 ·
Rate of EM emission based on surface characteristics
- druscilla
- · Replies 6 ·
Electric field between parallel plates
- lys04
- · Replies 4 ·
Finding the center of mass of a simple 2D shape
- JohnnyLaws
- · Replies 9 ·
Calculating low frequency cutoff for this R-C microphone circuit
- songoku
- · Replies 43 ·
What is the explanation for the divergence of the vector function r^hat/r^2?
- guyvsdcsniper
- · Replies 13 ·
Change in system entropy in relation to heat transfer
- tracker890 Source h
- · Replies 2 ·
Electric field in nonmagnetic material given a magnetic field
- PeterV
- · Replies 1 ·
Does weight affect braking distance for transport trucks?
- phil4321
- · Replies 27 ·
Finding the time for an object to start rolling without slipping
- member 731016
- · Replies 4 ·
Spring momentum conservation problem
- member 731016
- · Replies 4 ·
Rearrange formula to show a linear relationship between Frequency and Volume
- qq194
- · Replies 37 ·
Solving the motion integral near a turning point with Taylor expansion
- gionole
- · Replies 19 ·
Calculating voltage between two points using line integrals
- lys04
- · Replies 8 ·
Running princess and spider - time problem
- Lotto
- · Replies 13 ·
Why Is Work Positive When Done Against the Electric Field?
- lys04
- · Replies 22 ·
Power output and sound intensity
- dylanwalt
- · Replies 9 ·
Why Isn't Momentum Conserved with Varying Disk Radii?
- simphys
- · Replies 29 ·
Moment of inertia of a thin, square plate
- simphys
- · Replies 8 ·
8.01 MIT OCW PS1.4: Throw and Catch (Kinematics)
- giodude
- · Replies 4 ·
Correct Use of the Parallel Axis Theorem for Moment of Inertia
- simphys
- · Replies 2 ·
Velocity divided by Acceleration gives distance?
- Mongster
- · Replies 5 ·
Does a linearly time varying B create changing E?
- Shreya
- · Replies 4 ·
Oscillations of load with spring after rod is suddenly stopped
- alalalash_kachok
- · Replies 5 ·
Part of bike wheel is cut out, find period of oscillations
- alalalash_kachok
- · Replies 1 ·
Maximum power transfer theorem: is my solution for R correct?
- PhysicsTest
- · Replies 6 ·
Conservation of Momentum Calculation Woes!
- bruceleereview
- · Replies 12 ·
Calculating the Energy Absorbed by a Spring in a Car Suspension System
- Ebby
- · Replies 5 ·
Why is the entropy value of this steady flow open system not equal to zero?
- tracker890 Source h
- · Replies 11 ·
Question in Thermal Physics (Van der Waals' Equation)
- warhammer
- · Replies 6 ·
Where Does a Bar on a Fulcrum First Tip When a Person Walks Across It?
- JohnnyLaws
- · Replies 2 ·
How Does the Positive Spring Constant k = F/x Apply in Bow Mechanics?
- Ebby
- · Replies 4 ·
Block sliding down a wedge, all resting on a balance
- dorothy
- · Replies 1 ·
How Does a Frictionless Piston Affect Mercury Levels in a Manometer?
- Tomy World
- · Replies 6 ·
Pendulum SHO but with extra downward acceleration of the pivot
- simphys
- · Replies 2 ·
Free vibration in 2DOF spring mass systems
- M2H37
- · Replies 2 ·
Potential Energy - 2D inelastic collision - ballistic pendulum
- potatogirl
- · Replies 10 ·
Ohm's Law - Finding Source Voltage
- Brian82784
- · Replies 3 ·
Converting gravity into pressure inside the very center of a planet
- lexdean
- · Replies 4 ·
What is the Average Power of an Elevator in Physics?
- MatinSAR
- · Replies 17 ·
Electric field near conducting shell
- lys04
- · Replies 9 ·
Position vector for anti-clockwise circular motion derivation
- member 731016
- · Replies 5 ·
Calculation of the orbital period for a binary star system
- simphys
- · Replies 19 ·
Work done by non-conservative force while particle moves in circle
- Ebby
- · Replies 25 ·
Physics presentation topic combining mechanics or wave interference with everyday life
- joshwarner
- · Replies 6 ·
Oblique soccer shot calculation task
- johanMT
- · Replies 38 ·
Which Regions Can This Cannon Reach with Its Projectile?
- roborangers
- · Replies 4 ·
Relating acceleration to distance and time
- golya
- · Replies 5 ·
Loop current method sign error in bridge circuit loop B
- guyvsdcsniper
- · Replies 6 ·
Finding the angle that a string makes with a wall and its tension
- JohnnyLaws
- · Replies 4 ·
Basics of forces/torques and fulcrum
- JohnnyLaws
- · Replies 6 ·
Can energy truly be converted into matter in our world?
- Any name will do
- · Replies 5 ·
Adiabatic Expansion of Pressurized Air in a Piston-Cylinder Setup
- Peter_parker
- · Replies 8 ·
How to fit the Fourier optical formula using matlab
- xiaoxin8949
- · Replies 1 ·
Determining Maximum Torque in a Truck and Forklift System
- scatterbrainz
- · Replies 11 ·
Calculating Moment of Inertia for Hollow Cylinder w/ Water
- mostafaelsan2005
- · Replies 40 ·
Work done for round trip when force is function of velocity
- Ebby
- · Replies 17 ·
Calculations for Hydraulic Jacks lifting a load
- doconnor17dan
- · Replies 2 ·
Wetting on the outside of a glass cylinder
- guv
- · Replies 12 ·
Calculating ΔE from energy-time uncertainty principle with Δt = 4.41e17 s
- tanaygupta2000
- · Replies 7 ·
Getting the truck over the crossing
- pope
- · Replies 6 ·
Capacitance of three concentric shells
- Kashmir
- · Replies 3 ·
Rotational problem of arm - wrestling
- songoku
- · Replies 7 ·
Why does E=mc² give the same mass for a photon and electron?
- a71cj34
- · Replies 28 ·
Cart launched by spring sliding up a ramp
- zan123_
- · Replies 9 ·
Calculate the bouyancy of two spheres joined by a rope submerged in seawater
- jnuz73hbn
- · Replies 6 ·
SHM - Pendulum and Mass on a spring
- Shaye
- · Replies 1 ·
Find the amplitude of a sinusoid given frequency and time after zero-crossing
- jnuz73hbn
- · Replies 2 ·
Coefficient of Friction question for a cart going down a wooden ramp
- cutielollipop
- · Replies 18 ·
Relativistic velocity addition for a message between spaceship and station
- Saibot
- · Replies 7 ·
Electromagnetism question -- Forces between two current carrying wires
- cutielollipop
- · Replies 7 ·
When is the acceleration due to gravity negative and when is it positive?
- potatogirl
- · Replies 13 ·
Converting potential energy to potential at the origin
- ab200
- · Replies 10 ·
Aberration and Doppler shift in Special Relativity
- RafaPhysics
- · Replies 7 ·
Why is the thrust equation same under gravitational force?
- f3sicA_A
- · Replies 10 ·
Finding beam weight with suspended masses and torque equilibrium
- chmergatroyd
- · Replies 7 ·
Why is product of inertia zero for a rolling disk?
- Anubhav singh
- · Replies 24 ·
Physics Practical Investigation using a mass, a fulcrum and a plank
- Jeff97
- · Replies 16 ·
How to Derive Resonant Frequencies for Planar Mirror Resonators?
- Marco Oliveira
- · Replies 1 ·
Solving simultaneous equations from Kirchhoff's loop and junction laws
- viv12345
- · Replies 7 ·
Finding average angular velocity of a grinding wheel with three phases
- mysteryowl
- · Replies 6 ·
Double Slit Diffraction with Angled Light
- ab200
- · Replies 4 ·
Calculating Chromatic Aberration
- ab200
- · Replies 2 ·
Electric field from two point charges
- deGallo
- · Replies 2 ·
Why is 2.4-L Max Vol V1 in Diesel Engine Cylinder Example 9-60?
- tracker890 Source h
- · Replies 3 ·
Calculating Charge of an Electron w/ the Millikan Oil Drop Experiment
- guyvsdcsniper
- · Replies 12 ·
A cylinder of snow rolls down a hill gathering more snow -- calculate its speed
- guv
- · Replies 39 ·
Speed of cylinder rolling along a horizontal surface gathering snow (Solved)
- kuruman
- · Replies 13 ·
Gravitational Forces on three masses at the corners of an equilateral triangle
- hasibx
- · Replies 4 ·
Derivation of uncertainty formula
- songoku
- · Replies 7 ·
Correct approach in resolving a force into its different components
- Nova_Chr0n0
- · Replies 4 ·
Energy transfer/loss in catapult
- Twellmann
- · Replies 4 ·
How did Rutherford prepare the gold leaf for the gold leaf test?
- Hasal
- · Replies 6 ·
Statics problem -- Hinged members and anchor points supporting a mass
- David Donald
- · Replies 6 ·
Confusion on mechanics problem involving cart, blocks, and pulley
- niko_niko
- · Replies 37 ·
Revisiting the Feynman Ball on an Inclined Plane Problem
- John Helly
- · Replies 30 ·