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.
Calculating Vertical Velocity of Propagating Waves in a String
  • susdu
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Electrical Circuit Question - Integrating Amplifier
  • GreenPrint
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4
Friction Force Calculation: 1500 kg Car on 4 Degree Incline
  • julestux
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8
Understanding Bernoulli's Principle in Fluid Dynamics: Quick Question Answered
  • fobbz
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Mechanics Problem: Sliding Ring and Hoops on a Rough Surface
  • BBAI BBAI
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How to find angle from angular velocity?
  • Sneakatone
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An interferometer with two arms is constructed above
  • fobbz
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Frequencies of standing wave in pipe
  • susdu
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How Does a Fly Navigate Between Capacitor Plates?
  • Saitama
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Kinimatics: Find a & b for Projected Particle
  • Taylor_1989
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Velocity of bungy jumper, very confusing?
  • x86
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How Fast is the Motorcycle in This Doppler Effect Scenario?
  • TheRedDevil18
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Physics - transformer / resistance question
  • deedsy
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1D kinematics - finding g from time traveled
  • swevener
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Disk on a Motion: Find the Coordinates of Point A at t= 4piR/v
  • BBAI BBAI
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How Do You Calculate Buoyant Force on Submerged Ice?
  • Jbreezy
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Electric circuit analysis problem help?
  • Questions999
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3
How to Apply Kirchhoff's Laws to Find i and v in a Circuit?
  • Questions999
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A Pretty Basic Work/Energy Question
  • student34
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2
Computer science student needing help in solving an exercise
  • erkant
  • · Replies 16 ·
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What is the focal length of the lens? given magnification and distance
  • RedLego
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Interference and wave nature of light
  • lovelyrwwr
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Cross product in cylindrical coordinates
  • fishingspree2
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Given charge of uniform density. What is the electrical potential @?
  • RedLego
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Moment of Inertia of a Changing System
  • jcd2012
  • · Replies 5 ·
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What is the change in the proton's electric potential energy?
  • RedLego
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2
Find watts from rotational kinetic energy
  • Sneakatone
  • · Replies 28 ·
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28
Bernoulli/Continuity, Water flowing at different heights/radii
  • mknob001
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Need help finding the buoyant force in this problem
  • TheKShaugh
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3
How to Determine Velocity and Maximum Compression of a Pendulum-Spring System
  • silentcoder
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Calculating dA/dB ratio for horizontal log?
  • rockchalk1312
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Cam Follower Reaction Forces in Accelerating Roller Cart
  • DynamicDude
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Motor Torque required for 4 wheel drive electric car
  • Sandesh_10
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3
How to find angular acceleration
  • Sneakatone
  • · Replies 14 ·
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Rolling without slipping down a hill
  • IWuvTeTwis
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9
Projectiles colliding on a horizontal plane
  • Woolyabyss
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2
Force of gravity on one object caused by four objects
  • drdude24
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3
Moment of Inertia of a Rod with Two Uniform Masses Attached
  • jcd2012
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State what will happen when a positive particle has an initial velocit
  • dannie
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Finding Vector potential due to an infinite cylinder?
  • BeerScience
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Conservation of energy of object rolling down incline
  • Raziel2701
  • · Replies 13 ·
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Very very very short question circuit analysis please?
  • Questions999
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Graphene, why is it so strong, electrically conductive and flexible ?
  • JakeEToth
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What is the relation of sinθ and time in projectile motion with angle
  • xunok123
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Two springs one trolley, find velocity
  • coconut62
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Work done when kicking a soccer ball
  • alingy1
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3
How Do You Calculate the Intensity of an Electromagnetic Wave?
  • RRiley99
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Does equal electric field imply equal potential?
  • fishingspree2
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Calculating stress, strain and Young's modulus?
  • rockchalk1312
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Minimum velocity at bottom of pendulum
  • deep838
  • · Replies 10 ·
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Coasting up a driveway with snow - cons. of energy
  • totallyclone
  • · Replies 10 ·
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Probably a simple Maple syntax error(hopefully). Help?
  • mxotoni
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Space physics, is this correct?
  • x86
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Magnetic field. I on understanding this problem.
  • physics=world
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Finding parallel resistance of an RLC circuit at resonance from V
  • MeMoses
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How to find the coefficient of Friction?
  • luxford
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E field for an semi-infinite sheet of charge
  • fishingspree2
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Time taken to travel to the andromeda galaxy, oserved from earth
  • romanawgarlic
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Capacitor charged then Connected to another Capacitor.
  • Jonnyto
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What is the correct moment of inertia for part a using I=m*r^2?
  • Sneakatone
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How Does Pendulum Angle Affect Velocity?
  • CollegeStudent
  • · Replies 12 ·
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Angular velocity concept question
  • idllotsaroms
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Determining smallest possible diameter of a cable
  • kaffekjele
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4 sides of the wire can produce a B-field
  • clovergogo
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How Does a Dielectric Affect Energy Stored in a Capacitor?
  • Roodles01
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Determining the Handedness of Circular Polarized Waves
  • mrshappy0
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How Does Elevator Acceleration Affect Spring Extension?
  • nubshat
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Does the load on a transformer affect its efficiency?
  • Quadratic64
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What is the mystery value in finding force from momentum?
  • coconut62
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Problem on photoelectric effect
  • issacnewton
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How Can Momentum and Simple Machines Crush a Juice Box?
  • begginner
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Long straight wire: Ampere/Biot Savart
  • Roodles01
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Determine the total force on a dam
  • Firben
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Calculating Magnetic Field for a Circular Wire with Given Parameters
  • riken9
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Maximum velocity of object dropped from cliff
  • Jigen
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Time it takes for a RC circuit to fully charge
  • mathnoobie
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Magnetic Forces on Moving Charges True or False
  • devilaudy
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Change In Gravitational Energy Percent Error
  • Plutonium88
  • · Replies 10 ·
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3 Equal Charges in Equilateral Triangle - Find KE @ Inf
  • trixxstyle
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Low altitude satellites orbiting around planet with twice radius
  • totallyclone
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What Is the Minimum Diameter for a 600kV DC Transmission Line with 2% Loss?
  • colink96
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Calculating total energy carried by a ripple
  • sluo
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Classical Probability with a falling ball problem
  • dweeegs
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Find distance when slipping down the roof of a sky dome stadium
  • totallyclone
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Conservation of Angular Momentum of Bug Problem
  • tylertwh
  • · Replies 11 ·
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Resolution for a lens from a diffraction standpoint
  • rm_girl
  • · Replies 7 ·
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Possible to find the direction of magnetic force if angle isn't 90?
  • Arooj
  • · Replies 1 ·
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Get the Best Physics Final Exam Help with Comprehensive Study Guides"
  • laneybaney
  • · Replies 2 ·
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When a bird flies into a bar; solving for angular velocity
  • tylertwh
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A bullet hits a rod; find the angular velocity
  • tylertwh
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Find the current flowing through resistor
  • dinospamoni
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Electromagnetism direction rule
  • Jabababa
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Bug Jumps off a rod; what is the angular velocity of the rod
  • tylertwh
  • · Replies 11 ·
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How Does Electric Potential Affect Proton Movement?
  • CheetoFang
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Do Braking Distances Prevent a Collision in This Scenario?
  • limonade
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Finding angular acceleration from deceleration
  • Sneakatone
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How Do You Calculate the Spring Constant in a Frictionless System?
  • CollegeStudent
  • · Replies 13 ·
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Height of a fluid in a small tube
  • Ampere
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What is the maximum force exerted on a bullet lodged in a block?
  • kminkel
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No problem! Glad I could help. :)
  • booooo
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