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.
Can Someone Review My Lab's Theory Section?
  • Bashyboy
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Exercise combining Wave and Hydrostatic: Pulley and Submerged Ball
  • ricmacas
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Proving the Motion of Point P: Vertical or Elliptical?
  • nohkie
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EV vs V, Cutoff Potential Question
  • uberclay
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Kinematics questions. (Linear & projectile)
  • coconut62
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How Long Does It Take for a Father to Catch His Son if He Accelerates from Rest?
  • kencamarador
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Kinetic energy of a block sliding down a ramp
  • GoGoGadget
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Optimizing Physical Pendulum Oscillation: Finding d for Shortest Period
  • oreosama
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Calculating Area Density of Steel Discs
  • bpinto
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Why Does the Textbook Solution Use Average Pressure for Piston Work Calculation?
  • theBEAST
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Force Of Gas In Liquid And Gravity
  • hotdogski
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Electrical charge problem (need assurance on an answer)
  • AyooNisto
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Mountain climber 2d forces question.
  • boognish
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Clarification about a conductor as an equipotential
  • anban
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Basic formula for diffraction grating
  • Outrageous
  • · Replies 6 ·
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6
What is the Acceleration of a Couch Being Pushed at an Angle with Friction?
  • gullyb
  • · Replies 11 ·
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Comparison of direction of forces
  • gullyb
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How Much Fluid Was Injected Into the Capillary?
  • nayanm
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2
Thermal Expansion of a metal ring
  • SiriusAboutAstronomy
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5
Terminal Velocity: Solving for D
  • student34
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2
How Do You Solve a Frictionless Pulley System Problem?
  • Yosty22
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3
Newton's law to find acceleration
  • Mangoes
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2
Where is the particle most likely to be found?
  • Levi Tate
  • · Replies 25 ·
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Rearranging formulas. Accelerations
  • kencamarador
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Optics question - coin at the bottom of a swimming pool
  • Genericcoder
  • · Replies 1 ·
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1
Static Friction Coefficient Problems
  • jklops686
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5
Conducting Spheres and Their Charge
  • Nathew
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Where in a wineglass does the standing wave forms?
  • 06mangro
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How to find Qmax of a capacitor in parallel RC circuit?
  • woaname
  • · Replies 38 ·
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(GRADE 9 SCIENCE) Equilibrium Tension Force Help Me PLease
  • RunningBack
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3
Calculating Electric Field and Potential of a Charged Ring Segment
  • Octavius1287
  • · Replies 9 ·
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9
Work Done by Incline Plane & Gravity on Block?
  • TheNotoriousWM
  • · Replies 3 ·
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Young's fringes experiment, interference fringes
  • question dude
  • · Replies 9 ·
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9
K is the proportionality constant (Hooke's law)
  • InvalidID
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Capacitator Circuit and determining unknown charges voltages
  • liliacam
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Velocity and Acceleration together problem?
  • kencamarador
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5
How Do You Calculate the Moment of Inertia?
  • abcde149149
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Train Question? Uniform acceleration
  • kencamarador
  • · Replies 10 ·
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Solving distance in this problem. Easy
  • kencamarador
  • · Replies 7 ·
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Solve Supernova Problem: Apparent Magnitude at Max Luminosity
  • Froddo
  • · Replies 7 ·
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A strange electrical circuit - resistance calculation
  • KayEl9
  • · Replies 16 ·
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Physics question involving vectors and force (from Calc II)
  • Sooneroo
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Analyzing the Harmonic Oscillator: Maximal Velocity and Turning Points
  • CAF123
  • · Replies 34 ·
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Time between sound wave displacements
  • PhizKid
  • · Replies 10 ·
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10
Statics, beam attached to a wall, reaction forces
  • jonjacson
  • · Replies 10 ·
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10
Electric Dipole as x l, how do I simplify this correctly?
  • Yapper
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Relative velocity/Boat & River Question
  • Dalkiel
  • · Replies 18 ·
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Bouncing ball exercise with time of contact with the surface given
  • KayEl9
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Bernoulli's equation does not always work?
  • theBEAST
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Find Distance from Screen to Slits in Double Slit Experiment
  • rocapp
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How Does Adiabatic Compression Affect Steam and Water Mixtures?
  • zircons
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Intro to Physics problem dealing with speed and distance
  • Voltrical
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How Do You Calculate Force from Acceleration and Change in Direction?
  • RobinsoKo
  • · Replies 11 ·
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Find Moment About Point A Due to Distributed Load
  • United
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Two blocks touching on a table, one with friction and the other w/out
  • codytanner16
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Question regarding Rutherford's atomic model
  • daselocution
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What is the value of the dampening constant?
  • HiggsBrozon
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What Is the Correct Banking Angle for a Road Curve with No Friction?
  • x86
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When input voltage is high, capacitor is charging
  • lavindev
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KVL Solution for Loop A: V1-R1*I1-R2*(I1-I2)=0 vs. V1=R1*I1+R2*(I1-I2)
  • charlies1902
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Kinetic energy of ball sliding down slope with electric field?
  • asdf12312
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Intro to circuit analysis, Solve all the loops in this current? help
  • nchin
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Why Does Gravity Affect Work Done in a Simple Pulley System?
  • leehufford
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Average and instantaneous velocity
  • physicsernaw
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How to find force of a spring given force constant and length
  • Sneakatone
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Why Does My Circuit Calculation Not Match the Given Solution?
  • pyroknife
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How Does a Ball's Velocity and Acceleration Change on a Circular Path?
  • x86
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Calculating the magnetic field inside a field coil
  • newageanubis
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Woman standing on a rope problem.
  • itchy
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How to find distance using sound waves
  • PhizKid
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Mechanical Energy of a system: Conceptual Problem
  • Yosty22
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Help Isolate Time in this equation.
  • kencamarador
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Acceleration, a kid, a sled and frictionless surface
  • Trigulus
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Finding max force at bottom of a 2.8m decline swinging on a vine?
  • rockchalk1312
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Plummer Sphere, Density from Potential
  • SHISHKABOB
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Voltage on a point charge from a stick of charge
  • Colts
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How Is Work Calculated When Moving a Charge in an Electric Field?
  • smartdesk
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How to derive pv^gamma=constant
  • milan talaviya
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Solving for the Height of a Toy Car on an Inclined Loop-the-Loop
  • Joshb60796
  • · Replies 18 ·
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Projectile Motion 2.0- Drag in RL
  • ultrapowerpie
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Force to break one, two and three white pine boards
  • Howlin
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How Do Ultrasonic Transducers Calculate Maximum Amplitude and Speed in SHM?
  • wayveon
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Calculating Total Internal Energy of a System in Thermal Equilibrium
  • CAF123
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Why Doesn't the Centering Ring Shift Immediately When Angles Change?
  • swm06
  • · Replies 8 ·
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Calculate the voltage at a point
  • Colts
  • · Replies 3 ·
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How Far Does the Second Fragment Travel from Point A After Explosion?
  • Toranc3
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Does Tarzan's Vine Hold During His Daring Swing?
  • matt57017
  • · Replies 3 ·
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Catching Football (Projectile Motion)
  • Toranc3
  • · Replies 6 ·
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Finding angle of billiard ball after collision
  • luffy3san
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Momentum of ball bouncing off crossbar
  • luffy3san
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Find the reactions the pin A and roller D exert on the truss
  • pb23me
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Calculating Changes in Earth-Sun Distance with Varying Sun Mass
  • Numeriprimi
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How is the Refracting Angle of a Prism Calculated Using θ and θ/2?
  • Outrageous
  • · Replies 15 ·
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Monkey Bullet Proof: Analyzing Wrong Move
  • MattWakes
  • · Replies 12 ·
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Question about Terminal Velocity Lab- without motion sensor
  • Jaimie
  • · Replies 1 ·
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Is My Redrawn Resistor Circuit Correct?
  • moto30
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What is the Torque on a Crane Bar in a Fatal Accident Investigation?
  • GoGoGadget
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Sinusoidial waves: Frequency is not dependant on speed?
  • Willjeezy
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How Do You Derive Particle Distributions Using the Boltzmann Factor?
  • ferret123
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Velocity-time & displacement time graphs
  • CivilSigma
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