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.
Electric field on surface of earthed conductor
  • CAF123
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Calculate the equivalent capacitance in the network
  • Bishop556
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Calculating Original Speed from Time and Velocity Changes on a Freeway
  • OUstudent
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8
Vectors using the component method
  • farhana21
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Calculating ln in radioactive decay
  • kjevans
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Find Thevenin equivalent circuit
  • leroyjenkens
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3
Electric Fields-Calculating the total force on a charge
  • rico22
  • · Replies 12 ·
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12
Helicopter, travelling horizontally, is 82 m above the ground. The pil
  • cmkc109
  • · Replies 14 ·
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14
Angular acceleration, density question
  • letsfailsafe
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7
How Do You Solve a Complex Capacitor Problem with a Metal Block Insertion?
  • Hercuflea
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3
Euler's equations for constant torque?
  • Luftwaff1e
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1
Conservation of energy water turbine problem
  • TheRedDevil18
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3
Calculating peak voltage in a center-tapped transformer
  • JJBladester
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2
Generating Expressions For Electric Flux
  • Bashyboy
  • · Replies 23 ·
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23
Dimensions of Velocity Equation
  • OUstudent
  • · Replies 2 ·
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2
Force between perpendicular wires in the same plane
  • megaspazz
  • · Replies 8 ·
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8
Particle Kinematics with Friction
  • aaronfue
  • · Replies 9 ·
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9
Problem regarding determining mass of neutrino
  • dilloncyh
  • · Replies 7 ·
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7
Fluid mechanics - Conservation of mass problem
  • theBEAST
  • · Replies 2 ·
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2
Two Loops, Two Batteries: Find the Currents
  • JP4Fun
  • · Replies 8 ·
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8
How do I calculate the equivalence capacitance of this circuit?
  • Bishop556
  • · Replies 4 ·
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4
Understanding Charge Density in Spherical Distributions: ρ=dQ(r)/dV(r)
  • Nikitin
  • · Replies 5 ·
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5
Calculating Energy in Helium Ion Ground State via Bohr Model
  • steve233
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An optics problem - elliptical lens and plane waves
  • pergradus
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2
Which freezes faster Hot or cold water?
  • ShelbyMcD
  • · Replies 3 ·
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3
Calculate the charge in a hollow spherical conductor
  • Renaldo
  • · Replies 10 ·
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10
Problems about statics. Force and Moment calculations.
  • jonjacson
  • · Replies 6 ·
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6
Projectile Motion velocity and direction
  • aaronfue
  • · Replies 3 ·
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3
Need Help With Calculating Forces (Circular Motion)
  • kgianqu2
  • · Replies 3 ·
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3
Special relativity relating S S' and S''
  • Eats Dirt
  • · Replies 1 ·
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1
Electric field generated by a charged wire
  • Renaldo
  • · Replies 10 ·
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10
Buoyancy and Archimedes Principle, volume ratio/density question
  • phoebz
  • · Replies 5 ·
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5
Two tanks(Projecctile Motion and Relatve Velocity)
  • Toranc3
  • · Replies 3 ·
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3
Finding the charge on two beads?
  • janetxo
  • · Replies 8 ·
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8
Reflection and refraction of light
  • skierface
  • · Replies 3 ·
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3
Find Force to Lift Chain of Length L and Mass ρ Up
  • Saitama
  • · Replies 77 ·
3
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Find the final Celsius temperature of the aluminum and water
  • gamobigz
  • · Replies 2 ·
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2
Electron in magnetic field and center of circumference
  • bznm
  • · Replies 7 ·
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7
Ferris Wheel question (Motion in 2d)
  • jmedina94
  • · Replies 8 ·
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8
Electric Dipole Moment question
  • ilovetswift
  • · Replies 2 ·
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2
Frictional force in a free-body diagram
  • zeralda21
  • · Replies 5 ·
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5
Standing Waves: Linear Mass Density of a String?
  • InvalidID
  • · Replies 1 ·
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Potential difference between the parallel metal plates
  • jamesjenson
  • · Replies 7 ·
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7
Torque on a coil of wire in a magnetic field.
  • SherlockOhms
  • · Replies 5 ·
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5
Rope pulling cylinder - final velocity?
  • Silversonic
  • · Replies 10 ·
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10
Microwaves through an ice sphere: Which scattering solution is best?
  • DarkLightA
  • · Replies 2 ·
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2
Calculate Kinetic Friction Coefficient for Hockey Puck on Ice
  • kopinator
  • · Replies 1 ·
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1
The electric field of a charged semicircle from its electric potential
  • sergioro
  • · Replies 3 ·
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3
Electron in uniform field caused by two plates
  • Fluxthroughme
  • · Replies 2 ·
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2
Heat liberated after connecting two plates
  • Saitama
  • · Replies 30 ·
2
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RMS error in volume of a cylinder
  • OONeo01
  • · Replies 4 ·
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4
How can I solve this Work Energy Theorem problem for finding height?
  • TheRedDevil18
  • · Replies 14 ·
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14
Charge on a particle to balance its weight
  • Fluxthroughme
  • · Replies 4 ·
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4
Gr.12 Physics 30 TextBook *Curling(sport)* question
  • elmosworld403
  • · Replies 3 ·
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3
Some one me with the derivation
  • lioric
  • · Replies 12 ·
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12
Finding position vectors of x y z in meters
  • Sneakatone
  • · Replies 5 ·
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5
Equivalent Resistance (Prep for Lab on DC circuits)
  • TheOculus
  • · Replies 2 ·
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2
Where Is the Zero Potential Point Between Two Unequal Charges?
  • phunphysics2
  • · Replies 10 ·
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Calculating Superman's Average Force (due in 4 days)
  • riggi91
  • · Replies 4 ·
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Resultant vector given initial velocity and acceleration
  • idllotsaroms
  • · Replies 4 ·
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4
Questions on 3d displacement vectors
  • Sneakatone
  • · Replies 5 ·
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Which Frequencies Will a Listener Not Hear from Two Variable-Frequency Speakers?
  • Von Neumann
  • · Replies 8 ·
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8
SIN contest Tension and Acceleration question
  • fchen720
  • · Replies 7 ·
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7
Circuits Question - Thevein & Norton Equivalents
  • GreenPrint
  • · Replies 18 ·
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18
Understanding the Pendulum Dynamics Equation for a Cart
  • zoom1
  • · Replies 3 ·
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3
Electric Field Due to Dipole Problem
  • Renaldo
  • · Replies 4 ·
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4
Calculating Power in a Force Problem with Changing Angle and Time
  • jaumzaum
  • · Replies 6 ·
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Question on velocity at T1 and T2 problem
  • njt84572
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Is this the correct approach? (finding frequency of oscillation)
  • Sefrez
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Calculating Time for Sliding Chain through Hole
  • derravaragh
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Calculating Maximum Bending Stress of a Beam
  • MMCS
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2
How High Does a Rocket Go If Its Engine Cuts Off at 500 Meters?
  • CollegeStudent
  • · Replies 4 ·
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Why Do Time Intervals Differ in Motion Analysis Problems?
  • cattalion
  • · Replies 5 ·
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5
Tension in the rope of tug of war
  • deblimp
  • · Replies 1 ·
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1
Calculating Tension For A Massless String
  • Yosty22
  • · Replies 3 ·
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Calculating the force in a crane
  • Joren
  • · Replies 1 ·
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1
Why Pure Nitrogen System Evacuates Faster in 500 Microns Vacuum
  • smb360rewind
  • · Replies 1 ·
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1
Electric Field at Surface of Earthed Sphere (using image charges)
  • Mute_button
  • · Replies 1 ·
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1
Uniformly charged rod(exam in 3 hours, )
  • sushi362
  • · Replies 1 ·
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Particles undergo no disturbance at an antinode?
  • Originaltitle
  • · Replies 1 ·
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1
How Is the Momentum of a 140eV Photon Calculated?
  • quicksilver123
  • · Replies 9 ·
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9
Finding the Electric field given a time varying magnetic field
  • OONeo01
  • · Replies 7 ·
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7
Post Lab on Tension: Qs 1 & 2 Answered, Need Help with Q3
  • Habibrobert
  • · Replies 1 ·
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1
QM approximation (electron within nucleus, Griffiths 4.45b
  • Saraphim
  • · Replies 6 ·
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6
Equivalence between 2 solutions
  • CAF123
  • · Replies 13 ·
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Circular Motion: angle that the airplane makes with horizon?
  • captinkareem1
  • · Replies 1 ·
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1
Finding Acceleration of Gravity for Springs Without a Given K
  • Luna413
  • · Replies 1 ·
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1
Whats the best way to set up a table so it is more stable?
  • Jordi1986
  • · Replies 1 ·
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Optics Problem: Solving for Refraction on a Spherical Surface
  • thunderhadron
  • · Replies 2 ·
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2
Solving an Optics Problem: Convex Lens, Plane Mirror, and Virtual Image
  • thunderhadron
  • · Replies 2 ·
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What is the Half-Life of a Discharged Capacitor?
  • MegaDeth
  • · Replies 1 ·
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Ramp Function in MATLAB? also window adjustments (MATLAB Help)
  • Luongo
  • · Replies 2 ·
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Statics Question: Finding resultant force and orientation
  • Chandasouk
  • · Replies 1 ·
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Mass of object (wave nature of matter)
  • quicksilver123
  • · Replies 4 ·
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Magnetic fields from 3 current carrying wires
  • vagabond260
  • · Replies 5 ·
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Electric Potential and Wave Nature of Matter
  • quicksilver123
  • · Replies 2 ·
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Finding Horizontal Momentum of Cannonball
  • elmosworld403
  • · Replies 8 ·
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8
Magnitude of Initial velocity of Spacecraft
  • dragon18
  • · Replies 5 ·
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Estimating the vibrational frequency of Hydrogen molecule
  • stevenytc
  • · Replies 2 ·
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2
Electric Field of a Spherical Insulator
  • Stealth849
  • · Replies 5 ·
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5