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.
Why the speed of sound does not depend upon Pressure?
  • kashan123999
  • · Replies 6 ·
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6
Torque and Angular Acceleration for a Rigid Body Problem
  • Yosty22
  • · Replies 3 ·
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3
Extremely confusing dynamics question
  • SecretSnow
  • · Replies 2 ·
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2
Inertia and Angular Acceleration
  • CollegeStudent
  • · Replies 3 ·
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3
Kirchoff's Loop Rule-Direction of Current?
  • al_famky
  • · Replies 11 ·
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11
Velocity of end points of rectangular frames
  • Saitama
  • · Replies 21 ·
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21
Diffraction Problem, Calculate Slit Width
  • TheRedDevil18
  • · Replies 1 ·
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1
Rotational motion problems involving radians
  • lorkp
  • · Replies 1 ·
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1
Calculating Velocity Magnitude for Projectile Motion
  • Suprin
  • · Replies 7 ·
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7
Rotational Motion Question with Work Energy Theorem
  • Yosty22
  • · Replies 2 ·
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2
Electric potential at the center of two concentric shells
  • judas_priest
  • · Replies 5 ·
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5
Angle of deviation general relativity, trigo
  • Unicorn.
  • · Replies 8 ·
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8
Finding initial velocity given angle and horizontal displacement
  • Suprin
  • · Replies 6 ·
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6
Equivalent Mutual Inductor Circuits
  • anol1258
  • · Replies 20 ·
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20
Polarization by reflection and Brewsters Angle
  • Sswift
  • · Replies 1 ·
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1
Simple Harmonic Motion on a Uniform Meter Stick
  • NathanLeduc1
  • · Replies 3 ·
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3
Refractive index experiment/finding error on graphs
  • peanut111
  • · Replies 5 ·
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5
Equilibrium of systems in acccelerating frame
  • serverxeon
  • · Replies 1 ·
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1
Ball from the ground lands on top of a building
  • chris61986
  • · Replies 6 ·
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6
Does this horsepower for this car seem like the right value?
  • rockchalk1312
  • · Replies 1 ·
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1
What is the Definition of Current?
  • al_famky
  • · Replies 5 ·
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5
Help with the work done problem
  • jeevankasin
  • · Replies 3 ·
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3
Analyzing Kinetic Energy Changes in a Rolling Ball on an Incline
  • freshcoast
  • · Replies 23 ·
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23
Biot Savart Law Calculation problems
  • cherry_cat
  • · Replies 1 ·
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1
Position of proton and electron to create electric field
  • cherry_cat
  • · Replies 2 ·
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2
Calculating the mass of the wheel on a pendulum on a watch
  • NathanLeduc1
  • · Replies 5 ·
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5
Calculating Work Done by Force: Vectors & Joules
  • Jbreezy
  • · Replies 3 ·
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3
What Am I Missing About the Centroid Equation for a Circular Segment?
  • snurblet
  • · Replies 2 ·
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2
Finding the charges on capacitors in a circuit
  • nameless912
  • · Replies 7 ·
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7
Calculating Resultant Force at a Pivoted Rod | Uniform Rod in Vertical Plane
  • fkf
  • · Replies 2 ·
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2
Velocity Vector of Object After 4.1 s of Accel.
  • Robertoalva
  • · Replies 3 ·
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3
A ball hanging by a string while I'm accelerating.
  • aziiri
  • · Replies 12 ·
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12
Motion of a charged particle in an electric field
  • Nemo's
  • · Replies 11 ·
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11
How Is Kinetic Energy Calculated After an Electron Crosses Parallel Plates?
  • x86
  • · Replies 3 ·
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3
Mechanics - Acceleration on an elliptical path
  • Kaevan807
  • · Replies 13 ·
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13
Relativistic Kinematics conservation of energy
  • zhillyz
  • · Replies 11 ·
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11
Finding x for a spring using energy equations
  • cbasst
  • · Replies 2 ·
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2
Work done by electrostatic force
  • x86
  • · Replies 2 ·
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2
Kinetic Energy after a Collision
  • student34
  • · Replies 11 ·
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11
Smoothing of fullwave rectifying circuits
  • bubakazouba
  • · Replies 4 ·
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4
Question regarding a double slit experiment
  • Dongorgon
  • · Replies 2 ·
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2
Value of parallel capacitance necessary to achieve a Power F. of unity
  • anol1258
  • · Replies 6 ·
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6
Question about the sign of angular velocity
  • fredrogers3
  • · Replies 1 ·
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1
Gravitational Potential Energy of a rocket
  • mcnealymt
  • · Replies 3 ·
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3
Newton's Theory of Gravity: Calculating the Orbit of Our Solar System
  • mcnealymt
  • · Replies 4 ·
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4
How to calculate the extension of a spring?
  • abruzzi112
  • · Replies 1 ·
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1
Deriving decomposition of transverse acceleration
  • philipfisher
  • · Replies 3 ·
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3
How Much Force Does a Lift Chain Apply to a Roller Coaster?
  • smoothmar
  • · Replies 3 ·
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3
How Do You Analyze a Circuit with a Dependent Voltage Source?
  • Questions999
  • · Replies 2 ·
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2
Can Millikan's Oil Drop Experiment Accurately Measure the Elementary Charge?
  • silentcoder
  • · Replies 4 ·
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4
Two Satellites in Parallel Orbits
  • LovePhys
  • · Replies 7 ·
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7
Radioactive decay of granite -> How many years does it take?
  • Voltman123
  • · Replies 10 ·
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10
Electron in a magnetic field statements
  • Saitama
  • · Replies 3 ·
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3
Kinetic Theory of Gases: Effusion and Collisions
  • xatu
  • · Replies 4 ·
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4
Conservation of Momentum of a bomb shell
  • heycoa
  • · Replies 41 ·
2
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41
Inelastic collision involving pulley
  • issacnewton
  • · Replies 4 ·
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4
Question about an electron confined in an infinite well
  • lilfinger
  • · Replies 10 ·
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10
Uncovering the Unknown Circuit Element: An Exploration
  • hyddro
  • · Replies 12 ·
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12
How far apart were the centres of the two tunnels?
  • Voltman123
  • · Replies 6 ·
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6
Using Maxwell Boltzmann distribution to find number of atoms
  • dinospamoni
  • · Replies 1 ·
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1
Index of Refraction of a lens+mirror
  • Erubus
  • · Replies 2 ·
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2
Why Does RA Count Down During Retrograde Motion?
  • Dustinsfl
  • · Replies 7 ·
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7
Solve Charging RC Circuit: Find Capacitor Charge at t1
  • mrshappy0
  • · Replies 11 ·
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11
Ellipsoid Equation for Object Motion?
  • jclar1701d
  • · Replies 1 ·
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1
Gyroscopic Precession (Relationship with ωspin and ωprecession)
  • ILoveZerg
  • · Replies 1 ·
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1
How to find potential difference between 2 parallel deflection plates
  • firezap
  • · Replies 4 ·
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4
Power needed to overcome friction and gravity
  • bungouk
  • · Replies 5 ·
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5
Electrostatics question, involving mass?
  • hangingwire
  • · Replies 2 ·
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2
Homework Task: Find the power of water
  • besfort
  • · Replies 3 ·
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3
Pulleys and Blocks: Solving Homework Equations
  • Saitama
  • · Replies 21 ·
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21
Why Is the Input Resistance Equation Confusing?
  • s3a
  • · Replies 5 ·
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5
What is the Difference Between Latent Heat and Specific Heat?
  • Jbreezy
  • · Replies 10 ·
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10
Calculating Sphere Velocity on a Frictionless Ramp
  • kotchenski
  • · Replies 4 ·
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4
Entery level Mass-energy equivalence questions
  • letsfailsafe
  • · Replies 5 ·
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5
Help Laws of Motion and question help
  • physicsguru97
  • · Replies 13 ·
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13
Sliding Rings on Rods: Solving for Inextensible String Velocity
  • Saitama
  • · Replies 12 ·
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12
Finding the weight of the planck
  • adjacent
  • · Replies 8 ·
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8
What happens when the angle changes?
  • judas_priest
  • · Replies 2 ·
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2
How much mass will be converted to energy to accelerate the spaceship
  • AyooNisto
  • · Replies 10 ·
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10
Three coupled pendula via springs
  • CAF123
  • · Replies 12 ·
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12
Pulley & Tension: Solving for Acceleration and Tension
  • whitehorsey
  • · Replies 1 ·
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1
Calculating Force and Magnitude of Pulling 400kg Cart up Hill
  • whitehorsey
  • · Replies 4 ·
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4
Spring Constant & Potential Energy
  • Bonana
  • · Replies 2 ·
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2
Finding the coefficient of friction on a ramp
  • Mastevvs
  • · Replies 3 ·
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3
What is the Solution for Finding Velocity and Distance on a Water Slide?
  • Clever_name
  • · Replies 34 ·
2
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Wave speed, freq, and period of wave on a string
  • dinospamoni
  • · Replies 3 ·
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3
How Do You Apply the Parallel Axis Theorem to Calculate Moment of Inertia?
  • freshcoast
  • · Replies 11 ·
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11
The time an object first passes a point in simple harmonic motine
  • cyugsi2
  • · Replies 4 ·
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4
How can I Create a Virtual Slinky with Python or Excel?
  • ultrapowerpie
  • · Replies 7 ·
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7
Reflection of Light ~ Mirror on one side, surveillance on the other.
  • Silverbolt
  • · Replies 1 ·
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Energy generated by proton-proton cycle
  • lovelyrwwr
  • · Replies 3 ·
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3
Difference between a solenoid and a stack of loops
  • warrenchu000
  • · Replies 4 ·
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4
3 capacitors, a switch, and battery:simple configuration
  • mrshappy0
  • · Replies 8 ·
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8
Graphical analysis of angular displace v time
  • freshcoast
  • · Replies 4 ·
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4
Calculate Capacitance with Dielectrics
  • screen1998
  • · Replies 4 ·
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4
Rotating disk dropped onto another rotating disk
  • robertmatthew
  • · Replies 5 ·
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5
Induced current with two solenoids
  • skate_nerd
  • · Replies 6 ·
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6
How Do I Determine Equivalent Resistors in a Circuit?
  • judas_priest
  • · Replies 11 ·
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11
Nuclear physics: critical state and fission
  • lovelyrwwr
  • · Replies 2 ·
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2
Magnetism of a bar magnet - maximum rate of change?
  • Gatsby51
  • · Replies 1 ·
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1