Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
The way the circuit is drawn is super confusing to me
  • Mdhiggenz
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Application of Maxwell-Ampere's law
  • careman
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8
Help a chair leaning 60 degrees against a wall
  • Science4ver
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13
Analyzing Tank Breakage at 10m: Calculating Pressure and Tension | Forum Post
  • Forensic-guy
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Spring Energy (Finding Velocity)
  • Sam Fred
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5
Compass deflection by overhead transmission lines
  • SQUIDDO
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2
Headon inelastic collsion between small car and big truck
  • bkraabel
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Calculate resistance with a silver plate in circuit
  • lelon
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5
Counting microstates in Boltzmanns principle
  • erm
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Separate variables schrodinger equation
  • Cogswell
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4
Understanding phase relationships for AC capacitor/inductor circuits
  • JustStudying
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4
Probability of energy measurement in an infinite square well
  • Cogswell
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9
Quantum Harmonic oscillator, <T>/<V> ratio
  • Cogswell
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5
Solving Circuits Problem: Find Current Through R1 & R2
  • thercias
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1
Movable pulley and two connected particles on horizontal tables
  • Woolyabyss
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5
Desperately need introductory CIRCUIT/RESISTOR help
  • martinlematre
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7
Largest mass for Ultimate Tensile Strength
  • AJKing
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4
Understanding the Work-Energy Theorem for an Electron in a Circular Orbit
  • Jaymo3141
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4
Where is the intertial frame of reference applicable?
  • readingforev
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3
Series or parallel wired capacitors for max power storage
  • Birdnals
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7
Calculating Resistivity and Resistance: Solving for Unknowns
  • Jaymo3141
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2
Electromagnetism, finding potential difference
  • physics604
  • · Replies 7 ·
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7
Work Done/Power/Efficiency on an inclined plane
  • Dongorgon
  • · Replies 11 ·
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11
Question about momentum (elastic collision)
  • RuthlessTB
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3
Sum of Forces in X and Y Directions - axis set up normally
  • cdornz
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7
Discrepancy between my work and book's [Static Fluid/Pressure]
  • jeff.berhow
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6
Can You Give Examples of Industrial Processes That Depend on Gas Pressure?
  • dee 123
  • · Replies 14 ·
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14
Uniform Circular Motion
  • Nugso
  • · Replies 8 ·
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8
Faraday's law on rotating disk
  • gralla55
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4
Describe results of performing young's experiment with x-rays .
  • dannie
  • · Replies 1 ·
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1
Conservation of energy (Finding Velocity)
  • Sam Fred
  • · Replies 8 ·
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8
Confusing Question: How Long Does it Take for a Racer to Travel 2(3.70)m?
  • unstoppy
  • · Replies 5 ·
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5
Max Angle of Projectile for Increasing Position Vector
  • rattanjot14
  • · Replies 21 ·
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21
Can Sound Travel Through Clay?
  • Knightycloud
  • · Replies 9 ·
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9
How Do You Calculate Distance When Accelerating from Rest?
  • astroboy397
  • · Replies 8 ·
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8
Electrostatic potential energy - dielectric between concentric spheres
  • Saitama
  • · Replies 25 ·
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25
Determining Range of Values of P for Taut Cables
  • yaro99
  • · Replies 13 ·
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13
Calculate the electric potential of a charged bar
  • ShizukaSm
  • · Replies 18 ·
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18
Compressive/Tensive Force at joint
  • cdornz
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1
What is the velocity of the hydrogen atom after absorbing the photon?
  • dannie
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1
Electric Flux Units: Understanding the Confusion | Explanation Included
  • Miike012
  • · Replies 6 ·
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6
Calculating Torque for F1: 50N at d1-d3
  • cdornz
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5
Vector Help: Breaking Down x and y Coordinates
  • cdornz
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2
The History of the Grounded Electron - Help please
  • tg22542
  • · Replies 16 ·
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16
Why is Wool Used in the Resonance Tube to Calculate the Speed of Sound?
  • Knightycloud
  • · Replies 6 ·
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6
Surface tension - liquid rising in capillary tube
  • Saitama
  • · Replies 15 ·
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15
Calculating Charge on Metallic Plates with Open and Closed Switches
  • Saitama
  • · Replies 20 ·
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20
What quantity shows the wave particle duality of light?
  • dannie
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Photoelectric effect and Compton Scattering statements.
  • dannie
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1
How Does Roller Coaster Design Affect Cart Speeds at Loop Apex?
  • stunner5000pt
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Does a roller coaster have both kinetic and potential energy at every point?
  • njuice8
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Describe the pattern of intensity vs wavelength .
  • dannie
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How Do Charges Affect Net Force Calculation?
  • aChordate
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Orbital frequency and frequency of emitted radiation.
  • dannie
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What would happen to the frequency of emitted radiation
  • dannie
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At what frequency does the rotating mirror need to turn?
  • dannie
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6
Projectile Motion in 2d with Drag
  • nathanthegreat
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4
How to Calculate the forces when carrying a gurney
  • Science4ver
  • · Replies 7 ·
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7
What is the Velocity of the Last Piece of a Chain Falling on a Quarter Circle?
  • member 428835
  • · Replies 8 ·
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8
Why Short the 4kΩ Resistor in Source Transformation?
  • Mdhiggenz
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Coefficient of static friction for tongs.
  • jonjacson
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Why do welders use filters to block out UV light?
  • dannie
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What is the displacement of a wave on a string at a given instant of time?
  • ZanyCat
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5
What is the Definition of 1 Joule and How Does it Relate to Lifting Objects?
  • TSN79
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Capacitance of capacitor with unevenly charged plates
  • PedroB
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6
How Does a Flywheel Store and Transfer Energy?
  • wslukman
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8
Can someone explain the confusion with these basic motion equations?
  • FlamingAero
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Calculating quality factor in a series LCR circuit?
  • CrimsonFlash
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Irodov Equilateral Triangle Problem
  • hello95
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Two Blocks and a Pulley with Friction
  • . Arctic.
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Please help me as soon as you can this is due tommorow
  • candflhal
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5
How Do You Calculate Angular Velocity of a Merry-Go-Round Powered by a Dirtbike?
  • MeghanPfeif
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1
High school physics computer programs or big collections of tasks with
  • Reacto
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How Do I Perform Error Analysis in a Pendulum Experiment?
  • MassivePhysics
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Surface tension - thread in soap solution
  • Saitama
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2
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Calculating Work to Push a Charge from Infinity
  • anhnha
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Calculating Total Current in a Parallel RL Circuit
  • Nikitin
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10
What Are the Steps to Find Thevenin and Norton Equivalents?
  • xlu2
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What Are the Directions of Impulse and Momentum in Collisions?
  • whitehorsey
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3
Why is the electric field inside an ideal inductor zero?
  • anhnha
  • · Replies 12 ·
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Gas consumption to overcome drag force
  • warfreak131
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3
Why won't my mousetrap car move when the trap is set off?
  • xdzumux
  • · Replies 12 ·
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Classical mechanics, a puck and an incline
  • Cogswell
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4
Multiple Slit Interference and Driffraction Grating
  • Godcanthelp
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Magnetic force per unit charge and work done on a proton
  • physninj
  • · Replies 5 ·
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5
Why is Friction in the Direction of Velocity in this Problem?
  • whitehorsey
  • · Replies 6 ·
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Electroscope Problem: Why the Foil Leaves were Unaffected by a Neutral Balloon
  • shadowfalcon
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Electron in Constant B-Field (Cylindrical Coordinates)
  • Opus_723
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Potential due to induced charges
  • Saitama
  • · Replies 17 ·
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17
Monkey Gun/Shoot the Monkey Equations Question
  • nathanthegreat
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Calculating Maximum Voltage of a Plate for electron movement
  • QuickSkope
  • · Replies 13 ·
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13
What Was the Initial Speed of the Rock Kicked Off a Cliff?
  • 375551
  • · Replies 9 ·
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9
Finding Angles in Projectile Motion
  • rakeru
  • · Replies 20 ·
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Simple Harmonic Motion in an Elevator
  • Willjeezy
  • · Replies 6 ·
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6
Force related to distance question
  • member 428835
  • · Replies 1 ·
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1
Series-Parallel Circuit problem, afraid I'm tripping over my work
  • Brolomon
  • · Replies 5 ·
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5
Thermal Conductivity of Air: Pressure and Insulation
  • emiree
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Wavelength Diagram: Difference in Intensity Blueshift vs Redshift
  • Grove1996
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Time required to build enough charge for an electric arc
  • 12emerta
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Confused about vectors into rectangular components
  • alkaspeltzar
  • · Replies 22 ·
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