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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Work of kinetic friction on block in vertical circle
- galaticman
- · Replies 5 ·
Physics 2d kinematics, projectile motion
- vankyy
- · Replies 5 ·
How Do Voltages Distribute in an RC Circuit with Equal Resistors?
- rh23
- · Replies 17 ·
Tension of ropes when laying on a hammock
- Nathan777
- · Replies 4 ·
Calculating Leverage with Crates on Hydraulic Lifting Beam
- John78
- · Replies 1 ·
Maximum Magnetic Field B/w 2 Parallel Wires
- UMD_UG_ME
- · Replies 11 ·
Capacitor, circuits and how much charge is transferred
- mm2424
- · Replies 1 ·
Centripetal Acceleration with distance
- getty102
- · Replies 3 ·
Is the Reasoning Behind Electric Potential Energy Increase Correct?
- Miike012
- · Replies 6 ·
The coefficient of friction at a specific angle.
- texan14
- · Replies 1 ·
Projectile Motion - find initial velocity, flight time and max height
- kgal
- · Replies 2 ·
Why does the centripetal force subtract from total force toward center?
- Jacobim
- · Replies 12 ·
A grandfather pulls his granddaughter, whose mass is 20.5 kg
- AD_3
- · Replies 8 ·
What Is the Ratio of Charges q2 to q1 Based on Their Electric Field Angles?
- jamiewilliams
- · Replies 1 ·
Conceptual: bug masses on a rotating wheel
- getty102
- · Replies 1 ·
General Physics (I) Kinetic energy and momentum
- newjourney
- · Replies 6 ·
How Long Until Bath Water Cools to 45C?
- lionely
- · Replies 22 ·
Magnetic fields and the right hand grip rule
- shyguy79
- · Replies 2 ·
Electron speed in cathode ray tube with parallel plates
- bry
- · Replies 3 ·
Is the Phase-Space of a Bouncing Ball a Straight Line?
- Sekonda
- · Replies 8 ·
Calculating potential on surface of sphere
- mm2424
- · Replies 1 ·
Given tension and acceleration determine max weight
- jsewell
- · Replies 7 ·
Where Do Emily and Grace's Bumper Cars Collide?
- SavageWarrior
- · Replies 8 ·
Calculating Energy Lost in Gas Expansion
- aaaa202
- · Replies 12 ·
Bowling ball rolling, going up a ramp, and continues rolling.
- testme
- · Replies 6 ·
Why does net potential stay positive when fields from charges cancel?
- mm2424
- · Replies 3 ·
Electric Field/ infinite charged sheet
- Andy13
- · Replies 2 ·
Find the resistance of the coil
- Cisneros778
- · Replies 1 ·
What initial speed makes a juggled rod complete n rotations?
- miew
- · Replies 13 ·
Quantum mechanics uncertainty principle
- sawhai
- · Replies 8 ·
Integrating to find the electric field
- SchruteBucks
- · Replies 3 ·
For what frequency does the intensity have a minimum?
- Firben
- · Replies 2 ·
"Tension of Mass on Pole: Does it Change?
- kthejohnster
- · Replies 3 ·
Feynman Lectures on Physics - Rotation in 2 dimensions
- ZirconiumAce
- · Replies 3 ·
Gravity Question (I think) with mass and speed
- Sarim Rune
- · Replies 1 ·
Coulombic Force on Q from two particles
- nateja
- · Replies 4 ·
How Do You Calculate the Moment of a Force About an Edge Using Determinants?
- ucflap
- · Replies 1 ·
How could I find the rate of heat absorption?
- Gradders
- · Replies 1 ·
Bohr's model of hydrogen like atoms question.
- vkash
- · Replies 7 ·
How Do You Determine Xylophone Bar Lengths for Specific Notes?
- piareround
- · Replies 8 ·
Speed at which two charges collide
- djrkeys4
- · Replies 3 ·
Parallel Plate Capacitor - Finding E field between plates
- Sefrez
- · Replies 13 ·
Calculating Fundamental Frequency and Wavelength of a Vibrating String
- cupcakequeen
- · Replies 5 ·
Square coil on table with parallel magnetic field - when does it tip?
- babita
- · Replies 9 ·
How does a current balance measure magnetic flux density?
- gabloammar
- · Replies 39 ·
Velocity and position as functions of time
- Talltunetalk
- · Replies 4 ·
Distance traveled with acceleration, coasting, and deceleration
- vpa021
- · Replies 11 ·
Is Every Example Listed an Illustration of Newton's First Law?
- shahmeer
- · Replies 3 ·
How Does Potential Difference Affect Potential Energy in a Lightning Bolt?
- twigthemoogli
- · Replies 1 ·
Acceleration of gravity conflicts with F=MA, why?
- LearninDaMath
- · Replies 8 ·
Charge on parallel plates with 7.85×10⁵ V/m field
- DracoMassakin
- · Replies 3 ·
Charge distributed over a spherical surface [concept question]
- theBEAST
- · Replies 4 ·
Find the order of magnitude of the electrostatic force
- mm2424
- · Replies 1 ·
Finding the Block's Position After Work is Done on a Spring System
- Supernejihh
- · Replies 6 ·
Vertical motion under gravity - SUVAT equations.
- rollcast
- · Replies 2 ·
Calculating Electrostatic Force Between Charges
- nopescope
- · Replies 7 ·
How Do You Calculate Parameters of a Parallel-Plate Air Capacitor?
- thunderjolt
- · Replies 8 ·
Why does buoyant force equal displaced fluid volume even when floating?
- suzukits
- · Replies 4 ·
How does friction affect data in a modified Atwood machine?
- dbakg00
- · Replies 4 ·
Magnitude of gravitational acceleration at distance r
- shyguy79
- · Replies 6 ·
What is the amplitude of sinusoidal motion?
- Aar
- · Replies 1 ·
Work to compress water from 1 atm to 200 atm quasistatically
- aaaa202
- · Replies 2 ·
Find all the points along the line passing through both charges
- btpolk
- · Replies 4 ·
How does the angle of refraction affect the width of a transmitted beam?
- mathman44
- · Replies 4 ·
Is the Normal Force Always Equal to the Weight of an Object?
- PhysicsCCR
- · Replies 4 ·
What factors affect the motion of a bead on a spinning hoop?
- zaper
- · Replies 39 ·
Why does silicon resistivity approach zero at 307 K?
- kahwawashay1
- · Replies 1 ·
Pith Balls Problem: Find Expression for x & Instantaneous Relative Speed
- bruce550
- · Replies 20 ·
Electric Potential Energy: Work Required to Move 3 Charges Out to Infinity
- ayreia
- · Replies 2 ·
Calculate Density of Wood & Oil: Fluids & Density Homework
- scarne92
- · Replies 2 ·
Ionization of surrounding air due to metal sphere
- arvindrao86
- · Replies 2 ·
Finding the electric flux through a sphere
- Timebomb3750
- · Replies 7 ·
Electric field due to a FINITE cylinder of charge - Tricky binomial expansion
- nnj3k
- · Replies 3 ·
What Are the Angular Frequency and Maximum Amplitude of the Oscillating System?
- Elwin.Martin
- · Replies 7 ·
Dielectrics: What You Need to Know
- Crwth
- · Replies 1 ·
Focusing an outside view (light) down a tube then expanding it
- tim999
- · Replies 1 ·
How do you tell if two capacitors are in series or parallel?
- Instinctlol
- · Replies 14 ·
How can I calculate the time it would take for my battery to run down?
- sweetreason
- · Replies 10 ·
Hydrogen to Helium Reactor, how much hydrogen to power earth?
- cwolfx2
- · Replies 5 ·
Why Do My Calculations with Kirchoff's Laws Seem Incorrect?
- ahben86
- · Replies 3 ·
Temperature of a star via its flux
- cwolfx2
- · Replies 1 ·
Simple Uniform Acceleration Problem
- TheKovac
- · Replies 3 ·
Why does the return trip need a negative sign in average speed calculation?
- FieldDuck
- · Replies 2 ·
Where does charge q reach half its final speed?
- longcatislong
- · Replies 1 ·
Electric Potential and Equipotential Contour
- btpolk
- · Replies 6 ·
Engineering electromagnetics field theory
- sarwansagar
- · Replies 1 ·
Finding the net field strength due to a line of charge
- Ocasta
- · Replies 6 ·
How Do You Calculate Final Speed and Net Force in Physics?
- ndavid126
- · Replies 1 ·
'Rocket equation'(Physics by example, Rees, pr. 16)
- bentley4
- · Replies 2 ·
Special relativity with particles
- tskuzzy
- · Replies 3 ·
Who Misinterpreted the Motion Equation, Me or My Teacher?
- -Physician
- · Replies 4 ·
Solve Boyle's Law Problem: Calculate Atmospheric Pressure
- lionely
- · Replies 10 ·
Calculating Kinetic Energy of a Golf Ball
- IShouldBSurfing
- · Replies 6 ·
Classical Mechanics Acceleration under force F=-K/x^2
- macphysics
- · Replies 1 ·
How Do You Calculate the Multiplicity of a Two-Dimensional Ideal Monatomic Gas?
- jlmac2001
- · Replies 1 ·
Capacitance Combination for 9V Potential Difference
- gabloammar
- · Replies 8 ·
Projectile motion equations with zero x acceleration
- volleyballkay
- · Replies 4 ·
What is the distance and speed of a girl on a bicycle passing a bus stop?
- RichardT
- · Replies 9 ·
Center of Buoyancy: Proving BFO at Center of Gravity of Fluid
- Opus_723
- · Replies 1 ·
Finding height of flower pot dropper above you
- mfiorillo919
- · Replies 3 ·