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.
Deriving the Formula for Banked Roads: No Friction
  • Brute
  • · Replies 11 ·
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11
What is the magnetic flux through the desk?
  • monnapomona
  • · Replies 2 ·
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2
Momentum physics using vectors.
  • logan 1234343
  • · Replies 4 ·
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4
Coulomb's Law involving triangle
  • Benny851
  • · Replies 5 ·
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5
Finding V(out) of Operational Amplifier
  • anol1258
  • · Replies 1 ·
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1
Quadratic functions: [Diagram Included] Football game scenario
  • Swan
  • · Replies 3 ·
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3
SETI Binary Message Decoding Question
  • adamwest
  • · Replies 3 ·
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3
Colliding hydrogen atoms find velocity to raise to N=2
  • Bill Headrick
  • · Replies 3 ·
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3
Thermo, heat transfer rate, power plant
  • Confusedby
  • · Replies 3 ·
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3
Finding Terminal Velocity given Mass and magnitude
  • Matt_h
  • · Replies 7 ·
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7
Δt and Limit of Δx/Δt as Δt -> 0 at t=3?
  • ACSC
  • · Replies 9 ·
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9
How Does Physics Ensure a Safe Water Skier Stunt Over a Shark Tank?
  • Bostonpancake0
  • · Replies 3 ·
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3
F=BIL Relationship with coils Explanation?
  • Kognito
  • · Replies 1 ·
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1
Magnetic Fields from Two Infinite Sheets of Current Problem
  • Gee Wiz
  • · Replies 12 ·
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12
Electric potential at the center of a insulating sphere
  • SpringWater
  • · Replies 10 ·
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10
Issue with an aspect of moments and reactionary force
  • Dongorgon
  • · Replies 1 ·
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1
Electrostatics problem with pith balls hung using threads
  • Sunil Simha
  • · Replies 5 ·
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5
Voltage Across Resistors In Parallel
  • Bashyboy
  • · Replies 3 ·
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3
Find the distance at which the peacock will catch the snake
  • gnrlies00
  • · Replies 10 ·
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10
Motion - Overtaking Vehicles question
  • Dreaam
  • · Replies 1 ·
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1
Finding mass of Moon with Pendulum Bob
  • Carterr
  • · Replies 6 ·
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6
Two Batteries In Series-Total EMF and Internal Resistance
  • Bashyboy
  • · Replies 4 ·
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4
What does it mean if something is rated as 40W?
  • CivilSigma
  • · Replies 3 ·
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3
Netforce Graph Help: Understanding Zero Netforce and Constant Velocity
  • revults
  • · Replies 2 ·
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2
Understanding head and NPSH in pumps
  • theBEAST
  • · Replies 3 ·
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3
A flat, square surface with side length
  • Mdhiggenz
  • · Replies 5 ·
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5
A bushranger hanging out of a hotel window
  • PG222
  • · Replies 1 ·
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1
Water Rocket Parachute Deployment Ideas
  • AlaskanPow
  • · Replies 1 ·
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1
Photon with negative energy, Compton Scattering
  • zellwwf
  • · Replies 2 ·
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2
Also, what is your question? What do you want to know?
  • stephanieC
  • · Replies 1 ·
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1
Max Wavelength of Sodium Ionization
  • CFXMSC
  • · Replies 3 ·
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3
Two battery hooked up in series, energy conversion
  • Helmholtz
  • · Replies 3 ·
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3
How many electrons would transfer 1 J of energy to a screen?
  • CivilSigma
  • · Replies 2 ·
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2
Rotational motion inelastic collision
  • kirafreedom
  • · Replies 3 ·
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3
RLC Circuit Second Order Differential Equation
  • SALAAH_BEDDIAF
  • · Replies 7 ·
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7
How to find displacement in vector diagram?
  • karis scherer
  • · Replies 2 ·
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2
Electromagnetic waves, doppler effect
  • lovelyrwwr
  • · Replies 2 ·
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2
Incomplete Momentum bar chart for collision
  • chicagobears34
  • · Replies 2 ·
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2
Confusion Regarding Most Probable Kinetic Energy of an Ideal gas
  • Sunil Simha
  • · Replies 1 ·
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1
Magnetic field at (z) axis of square loop
  • Siune
  • · Replies 1 ·
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1
Why Does the Painter Only Need to Pull Down with 400N to Accelerate Upwards?
  • ZanyCat
  • · Replies 3 ·
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3
Problem related to Newton's Laws
  • RuthlessTB
  • · Replies 3 ·
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3
Electricity & magnetism, circuit with capacitors
  • devilaudy
  • · Replies 1 ·
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1
Understanding centrifugal pumps
  • theBEAST
  • · Replies 1 ·
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1
Young modulus (deriving formula)
  • coconut62
  • · Replies 7 ·
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7
What is the moment of inertia of the yo-yo?
  • kirafreedom
  • · Replies 14 ·
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14
How Do I Solve This Inelastic Collision Equation?
  • karis scherer
  • · Replies 1 ·
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1
Solve for aa = 3.38 m/s^2Pulley Quesiton Homework: Tension in Massless String
  • oneshot
  • · Replies 1 ·
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1
Interpreting and converting an acceleration-time graph
  • ACSC
  • · Replies 3 ·
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3
By non-physicist: weight at 2 ends of 45°
  • DynV
  • · Replies 12 ·
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12
Continuity and measuring resistance.
  • pyroknife
  • · Replies 1 ·
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1
Forces, marble on side of spinning bowl
  • bang
  • · Replies 4 ·
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4
Effects of Dielectric on capacitors
  • Donnyboy
  • · Replies 9 ·
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9
Slip condition for a pulled cylinder
  • Helmholtz
  • · Replies 3 ·
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3
Electric Flux Through a Face of a Cube
  • Helmholtz
  • · Replies 1 ·
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1
Circular conductor with changing T effecting power and magnetic field
  • Helmholtz
  • · Replies 2 ·
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2
Conceptual question on floating
  • kevinnn
  • · Replies 23 ·
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23
Why Does the Shuttle-Ball Experiment Graph Show Only Straight Lines?
  • superconduct
  • · Replies 8 ·
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8
How is Frequency related to Energy in a Wine Glass?
  • 06mangro
  • · Replies 4 ·
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4
Why do all wine glass have four nodes (4th harmonic)?
  • 06mangro
  • · Replies 6 ·
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6
Solving Radioactive Decay Mix-Up & Calculating Half-Life
  • FaraDazed
  • · Replies 5 ·
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5
Relative Velocity with plane and wind
  • Woolyabyss
  • · Replies 4 ·
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4
Moving a loop of wire away from a current carrying wire
  • warfreak131
  • · Replies 3 ·
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3
Three Charges Problem: Sketching the Motion of Charges Released from Rest
  • superconduct
  • · Replies 1 ·
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1
How thick is the atmosphere in the rest frame of a high-energy muon?
  • nn542
  • · Replies 1 ·
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Projectile motion of car hitting the ground
  • Abdeln
  • · Replies 19 ·
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19
Calculating Emission Frequency for F-centre in a 3D Well | λ = 6.74x10^49 Hz
  • Roodles01
  • · Replies 8 ·
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8
Simple parallel circuit question
  • jgv115
  • · Replies 5 ·
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5
A Penny Falling of a Staionary/Fixed Position Sphere
  • . Arctic.
  • · Replies 4 ·
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4
Why Does the Exponential Calculation in My RC Circuit Equation Return 1?
  • physics=world
  • · Replies 4 ·
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4
How Is the Moment Calculated for a Tensioned Cable on a Telephone Pole?
  • wilson11
  • · Replies 9 ·
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9
Bungee Jumping Spring Constat/Work-Energy
  • bang
  • · Replies 9 ·
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9
Discrepancy in force of friction in a problem
  • fredrogers3
  • · Replies 17 ·
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17
Spring Constants, Work, and Force
  • NyghtLyght
  • · Replies 3 ·
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3
How Do Electrostatic Speakers Use Voltage to Create Pressure?
  • Number2Pencil
  • · Replies 4 ·
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4
Lagrangian and lagrange equations of a system of two masses
  • Dixanadu
  • · Replies 10 ·
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10
Creating Circuits with equivalent resistances
  • ragsz
  • · Replies 8 ·
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8
What is the force of contact between the two blocks?
  • boupidou
  • · Replies 1 ·
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1
Calculating Initial Acceleration
  • kencamarador
  • · Replies 2 ·
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2
Rotational motion problem, half solved, can't figure out other half.
  • Vagabond7
  • · Replies 1 ·
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1
Work on a plane with angles forces
  • Zsmitty3
  • · Replies 7 ·
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7
How do I calculate arc length using the arc length equation?
  • eXmag
  • · Replies 5 ·
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5
Question Involving Fluid Speed.
  • kevinnn
  • · Replies 2 ·
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2
Solving Torque on a Pulley: 0.5Nm, 4kg Block, 12cm Diameter
  • cjavier
  • · Replies 1 ·
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1
Physics Coursework: Oblique Collisions. Tips needed
  • Ajrt
  • · Replies 1 ·
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1
Thermal Expansion-how much has the ocean expanded
  • endurance12
  • · Replies 3 ·
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3
Using energy concepts and possibly work bunjee jump problem
  • SChiO
  • · Replies 2 ·
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2
Unraveling the Physics Behind Evaporating Earth's Oceans
  • Numeriprimi
  • · Replies 3 ·
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3
Double Pendulum (One pendulum hanging from the other)
  • CAF123
  • · Replies 37 ·
2
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Essay on what materials are best at shielding electromagnetic pulses
  • ArenasField
  • · Replies 1 ·
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1
How High Must a Rod Fall to Hit a Table Elastically at Both Ends?
  • sergiokapone
  • · Replies 24 ·
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24
Centre-of-mass Energy of Colliding protons
  • joakley
  • · Replies 1 ·
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1
Energy dissipated in RC circuits
  • meg29
  • · Replies 2 ·
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2
Binary Star Systems: Radial Velocities, Observations & Unresolved Eclipses
  • shyguy79
  • · Replies 1 ·
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1
Calculating Activity of proton beam
  • wormhole228
  • · Replies 1 ·
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1
Analyzing Parallel RC Circuits with Time Constant Variation
  • VHAHAHA
  • · Replies 2 ·
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2
Sources of error in thermal expansion
  • endurance12
  • · Replies 1 ·
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1
Impact of rolling sphere with vertical rod
  • sergiokapone
  • · Replies 10 ·
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10
Average acceleration and average force
  • tooperoo
  • · Replies 4 ·
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4
Find Pressure at Point A in the Manometer
  • Northbysouth
  • · Replies 1 ·
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1