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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Deriving E = -∇ψ using Stoke's theorem and curl identity
- ZedCar
- · Replies 5 ·
Splitting vectors into Components
- ninfinity
- · Replies 1 ·
Question- Angular Simple Harmonic motion
- sankalpmittal
- · Replies 25 ·
Representing a radius vector in a Cartesian system for a simulation
- scienalc
- · Replies 12 ·
Three forces - in equilibrium or not?
- shin777
- · Replies 2 ·
Piston pressure after rotating cylinder 180 degrees
- shrrikesh
- · Replies 8 ·
How Does a Cube Fall When Balanced on Edge?
- thecommexokid
- · Replies 7 ·
Four Protons Are Fused Into An Alpha Particle, Energy Released
- breakingaway
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Combining Momentum with Friction
- student34
- · Replies 7 ·
Entropy For Irrevesible Process
- Point Conception
- · Replies 9 ·
Finding the Distance for a Zero Electric Field at a Corner of a Square
- thercias
- · Replies 6 ·
Sign conventions in force equilibrium with tension components
- s3a
- · Replies 5 ·
Angular Velocity w/2 welded disks
- CollegeStudent
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Phase Difference of a light wave
- Erubus
- · Replies 4 ·
What is the equation for calculating molecular flux for a gas?
- Erubus
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Circuit analysis is this correct?
- Questions999
- · Replies 2 ·
What is the average lifetime of a Muon in the laboratory frame?
- lmstaples
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Why Does a Magnetic Field Do Zero Work?
- conorordan
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Energy required to fully ionize Uranium
- doppeled
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Finding capacitance from a graph of current vs angular frequency
- k31453
- · Replies 29 ·
Angular momentum and acceleration
- Felafel
- · Replies 20 ·
P.S. I did it on paperPolynomial Division: 3x^3-5x^2+10x+4 / 3x+1
- eddievic
- · Replies 2 ·
Object thrown upward at 50 m/s - finding total time in air
- Psyguy22
- · Replies 3 ·
Spring-mass-damper system with 150 kg mass: is it underdamped or overdamped?
- reuben19
- · Replies 4 ·
Find the angle between two vectors
- jamesbrewer
- · Replies 13 ·
Calculating the Mass Difference for Beta Plus Decay: 13N → 13C + e+ + ve
- sunrah
- · Replies 1 ·
Vertical acceleration due to car going over speed bump
- Complete
- · Replies 11 ·
Calculating Rest Mass of Original Object in Inelastic Explosion
- ftbf22
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Hanging spring with 2.5 kg mass stretches to what ruler mark?
- jmosque
- · Replies 8 ·
Acceleration of a system with 2 Blocks and a Wedge
- goukishin
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Prove v = u(ktu^3 + 1)^1/3 & x = (1/2ku^2)((ktu^3 + 1)^2/3 - 1)
- SherlockOhms
- · Replies 2 ·
Calculating Work and Power on a Block on an Inclined Plane
- SherlockOhms
- · Replies 11 ·
Acceleration straight line graph
- xzibition8612
- · Replies 3 ·
Can the spacing of rods affect the weight needed for applied force?
- patehi
- · Replies 1 ·
Average speed of person walking problem
- xzibition8612
- · Replies 2 ·
Resistance and Radii Relationship
- anshuman3105
- · Replies 7 ·
Antenna Wavelength - double-slit interference
- Koro21
- · Replies 5 ·
How to Find Pressure at Various Points in a Liquid-Filled Tank with a Tube?
- Pandaphys
- · Replies 1 ·
Simple Harmonic Motion with Initial Velocity: Calculating Speed and Time Period
- SherlockOhms
- · Replies 2 ·
Graphical analysis of a damped harmonic system
- freshcoast
- · Replies 15 ·
Heat from enthalpy of formation of water at constant pressure
- Cogswell
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Object oscillates such that displacement is x = (.222)sin(314t)
- jorgegalvan93
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Circuits involving Kirchoff's law
- zeralda21
- · Replies 10 ·
How Do You Calculate the Speed and Retarding Force in a Momentum Problem?
- TheRedDevil18
- · Replies 3 ·
Is x = A sin²(ωt) simple harmonic motion?
- faiz4000
- · Replies 2 ·
Finding what fraction of molecules have speeds over a certain value
- Erubus
- · Replies 2 ·
Determine the Magnitude of the Time Rate of Change of Angular Momentum
- Northbysouth
- · Replies 1 ·
F I pinch hold a book, with 6N on either side
- dgamma3
- · Replies 1 ·
Find the angular acceleration of a hinged beam
- UselessLadder
- · Replies 3 ·
Determine Total Work done by the Force
- Northbysouth
- · Replies 1 ·
Monochromatic luminosity and flux equations
- Flucky
- · Replies 5 ·
Magnet dropped down a copper tube experiment
- guay
- · Replies 4 ·
Magnitude and direction of acceleration from two forces at 60°
- SherlockOhms
- · Replies 4 ·
How Do You Calculate the Magnitude of Vector C in Vector Subtraction?
- x31fighter
- · Replies 3 ·
Resistor and power output varying with a distance x
- Jonnyto
- · Replies 4 ·
Block sliding down wedge problem
- freshcoast
- · Replies 8 ·
Voltage and energy in capacator system
- barryj
- · Replies 5 ·
Collisions between two balls in 2d-motion
- zeralda21
- · Replies 8 ·
Total Energy of a Particle After Discharging a Photon in a Moving Frame
- buc030
- · Replies 4 ·
Relating Path Difference and Intensity in Radar Signals
- Saitama
- · Replies 17 ·
Energy to separate charge +e and -e
- Saxby
- · Replies 2 ·
Simple Maxwell Equation question
- ZedCar
- · Replies 4 ·
Question in Energy and Energy Transfere
- Some body
- · Replies 2 ·
Tension in a vertical circular motion cord and gravitational acceleration at height
- FLIHGH
- · Replies 5 ·
Finding elevator acceleration from scale reading change
- Vipercobra
- · Replies 2 ·
Entropy problem involving saltwater uptake into a cell
- GoGoGadget
- · Replies 5 ·
Spring Problem with Possible Conservation of Energy Concept ?
- SChiO
- · Replies 8 ·
Solving Elastic Collision Problems
- definition
- · Replies 7 ·
RL circuit inductive reactance problem
- skate_nerd
- · Replies 4 ·
Pulley system with friction: finding acceleration of hanging masses
- Sleepycoaster
- · Replies 2 ·
Pigs in space and circular orbit
- swevener
- · Replies 1 ·
What Is the Electrical Field Magnitude at Each Point Due to the Charges?
- baird.lindsay
- · Replies 13 ·
Force of a water flow through a U-shaped pipe
- zeralda21
- · Replies 10 ·
Static equilibrium - girl on diving board
- smashd
- · Replies 1 ·
LC circuit, space between dielectric plates
- skate_nerd
- · Replies 2 ·
Grade 11 Sound Intensity Question
- Zarquad
- · Replies 2 ·
Power in the components of an RC circuit as a Function of time
- physninj
- · Replies 3 ·
What is the total resistance of this circuit?
- MJay
- · Replies 4 ·
Relativity and the speed of light
- mrcotton
- · Replies 2 ·
Heat loss rate using Stefan-Boltzmann equation at 10°C
- kingstar
- · Replies 12 ·
Can you find current through 4 bulbs with only voltage given?
- cjhockey35
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How Does Relativity Affect Time and Space Measurements Between Events?
- ZanyCat
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Gravitational potential energy from ∞ to r
- Saix7
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Why Do P=IV and P=I^2*R Yield Different Results in This Case?
- pietastesgood
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I with Fluid systems question
- StudyNinja1
- · Replies 1 ·
What is the current relationship between resistors in parallel?
- 3inst3in
- · Replies 5 ·
Ball projected upward from building with initial velocity 30 m/s
- TheRedDevil18
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Rate of change of air pressure with exponential decay formula
- hbuk
- · Replies 2 ·
B field inside solenoid as a result of iron rod
- CAF123
- · Replies 1 ·
AP Physics C E&M: Struggling with Homework Before Exam
- sarvesh0303
- · Replies 6 ·
FBD of Hot Air Balloon and Buoyancy
- zeralda21
- · Replies 4 ·
Finding the current and the voltage across each resistor
- Lopez
- · Replies 3 ·
How Do You Calculate the Electric Field from the Electric Potential V=4x²?
- Kartik.
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Multi-loop RC circuit, 2 batteries, 7 resistors, 1 capacitor
- physninj
- · Replies 11 ·
Elastic collision between two moving objects
- captainmustard
- · Replies 3 ·
AP Physics E&M: electric field, induction, and LC circuit problems
- pietastesgood
- · Replies 17 ·
Young's Two Slit Experiment Question
- Von Neumann
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How Is Maximum Kinetic Energy Calculated for an Electric Bicycle with a Rider?
- Dongorgon
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Current Carrying Wire in Magnetic Field
- DeChance
- · Replies 1 ·
Displacement of a Pendulum to find Work done by Force
- shinify
- · Replies 3 ·