Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Coulomb's law for uniformly charged spheres
- aeromat
- · Replies 3 ·
Gravitational field intensity 300 km above Earth's surface
- aeromat
- · Replies 1 ·
Modern Physics Introduction Photon Energy and Wavelength
- fallen186
- · Replies 1 ·
Calculating the normal force of a roller coaster
- tpopono
- · Replies 1 ·
Modern Physics Introduction Standing Wavelength and Frequency
- fallen186
- · Replies 1 ·
Modern Physics Introduction Question on Electron Speed and Momentum
- fallen186
- · Replies 1 ·
How Does Non-Monatomic Gas Behavior Differ During Expansion?
- awertag
- · Replies 1 ·
Direction of acceleration in projectile motion
- JesnieC
- · Replies 2 ·
How Is the Magnetic Field Calculated at Point P Near a Current-Carrying Wire?
- amb0027
- · Replies 5 ·
Max Height of Rocket A Above Earth's Surface
- eurekameh
- · Replies 2 ·
What is the coefficient of static friction between the crate and the truck bed?
- BiggiesGhost
- · Replies 4 ·
Electric field of a hemispheric vessel with uniform surface charge distribution
- pc2-brazil
- · Replies 8 ·
Kinetic and potential energy and speed
- crpcrpcrp
- · Replies 40 ·
Question on thin film interference
- crosbykins
- · Replies 1 ·
How Is the Capacitance of a Parallel-Plate Air Capacitor Calculated?
- vegamontalvo
- · Replies 3 ·
Law of reflection with a glass slab on the mirror
- sachin123
- · Replies 3 ·
Physics question (mass at rest raised to height by force. What is velocity)?
- bearsa113609
- · Replies 1 ·
Center of Mass and Motion of Objects: A Mechanics Exam Review Question
- jstep
- · Replies 5 ·
Electricity basis resistors/power/current question
- Femme_physics
- · Replies 14 ·
Current carrying wire and induced electric field within the wire
- thepatient
- · Replies 2 ·
Single and Double Slit Diffraction and Interference
- Pride
- · Replies 1 ·
Deriving frequency formula for rotating mass on a spring
- trojsi
- · Replies 4 ·
How does resistance change with temperature in conductors and semiconductors?
- noor.lalu
- · Replies 3 ·
How Does a Potential Step Affect Particle Wave Functions and Traveling Waves?
- blueyellow
- · Replies 1 ·
Calculating Refraction at a Spherical Surface with Multiple Media
- zorro
- · Replies 1 ·
Few questions about nuclear physics
- wg1337
- · Replies 3 ·
Beats from Different String Lengths
- rpp293
- · Replies 1 ·
A two-side 'A' shaped ladder and then tension in the wire that holds it together
- IAmPat
- · Replies 3 ·
How to find eigenvectors of a 3 by 3 matrix
- gboff21
- · Replies 3 ·
How Is Net Work Calculated in a Cyclic Ideal Gas Process?
- eriadoc
- · Replies 2 ·
Wire Suspended By Magnetic Field
- Lancelot59
- · Replies 2 ·
How Do You Calculate the Coefficient of Friction on an Inclined Plane?
- patton_223
- · Replies 2 ·
Detecting gamma rays with cesium and a Geiger counter
- logaliciouz
- · Replies 2 ·
Maxwell's Equations: B-field induced from changing E-field
- Bryon
- · Replies 4 ·
Momentum of a mass spring system >_<
- Titandwedebil
- · Replies 20 ·
Calculating Capacitance for a Rolled Capacitor
- Runaway
- · Replies 4 ·
What is the Final Temperature of Hot Body C in a Thermodynamic Engine Cycle?
- Telemachus
- · Replies 13 ·
Net Electric Force on +q Charge with Two Added Charges
- aeromat
- · Replies 7 ·
Calculating Orbital Speed of a Geosynchronous Satellite around Mars
- sunbunny
- · Replies 18 ·
Molar heat capacity (Thermodynamics)
- Telemachus
- · Replies 6 ·
Gravitional Potential Energy and Elastic Potentional Energy
- y201
- · Replies 8 ·
Elastic collision between identical steel balls at 40 degrees
- eschw54
- · Replies 2 ·
Electric Field Interactions in a Bent Wire Configuration
- elyons
- · Replies 2 ·
Deriving MOI of a Radially-Dependent Density Cylinder on an Incline
- Stickboy10
- · Replies 9 ·
Serious problems understanding which things to do first
- Amaz1ng
- · Replies 5 ·
Calculations associated with a bouncing ball
- annamae
- · Replies 1 ·
Finding Electric Flux of a Disc of Radius r
- prasum
- · Replies 8 ·
Start a Fire with Shaving Mirror?
- Master J
- · Replies 3 ·
Woman standing on ball of foot - torque
- superdave
- · Replies 4 ·
Acceleration of suspended block in pulley-cylinder system
- elsternj
- · Replies 3 ·
Solve Buoyancy Problem: Estimate Balloon Radius for 6 Yr Old Boy
- lavster
- · Replies 1 ·
Temperature of a Conducting Rod
- ObliviousSage
- · Replies 3 ·
Intensity measured from a point and surface intensity
- Chowie
- · Replies 4 ·
Destructive interference of sound
- sparkle123
- · Replies 2 ·
How Does Inserting a Dielectric Affect Electric Field in a Charged Capacitor?
- kliang1234
- · Replies 1 ·
Finding refractive index and critical angle when refraction angle is unknown
- dinhjeffrey
- · Replies 1 ·
Why does pressure stay the same when partition between equal gas volumes is removed?
- Nora314
- · Replies 2 ·
Confined Electron: Min Uncertainty in Momentum/Velocity
- sona1177
- · Replies 1 ·
Temperature for 440 Hz sound wave with 0.82 m wavelength
- leehana10
- · Replies 3 ·
Calculating Tension and Charge Magnitude in Charged Particle Systems
- MrBballa
- · Replies 2 ·
Parallel capacitor, electrostatic energy
- dinhjeffrey
- · Replies 8 ·
Calculating Speed of Block with Dielectric in Capacitor
- 123yt
- · Replies 1 ·
Total force resisting the forward motion of a boat at a speed
- sparkle123
- · Replies 2 ·
Find an expression for linear momentum and torque
- Stickboy10
- · Replies 5 ·
What is the derivation for decrease in g with depth?
- Quantum Mind
- · Replies 10 ·
Calculating Mass and Height of Ideal Gas in a Vertical Tank
- pyroknife
- · Replies 1 ·
How Is Frequency Calculated in the Stern-Gerlach Experiment?
- erok81
- · Replies 1 ·
Power output of a person during a run
- starji
- · Replies 16 ·
What is Faraday's Law of Induction?
- dinhjeffrey
- · Replies 4 ·
Transformer windings and voltage
- sparkle123
- · Replies 2 ·
Right hand rule #2 for current and magnetic force on electron
- dinhjeffrey
- · Replies 4 ·
Polarised light from fresnel's equation
- quietrain
- · Replies 2 ·
Max Height of Ball: Can it be Determined?
- sparkle123
- · Replies 2 ·
Calculating Angular Speed in a Rotating System with Sliding Rings
- lina29
- · Replies 2 ·
Calculating velocity, given mass and force
- dinhjeffrey
- · Replies 12 ·
Can you induce a current in a coil without a magnet?
- gabby_w
- · Replies 3 ·
Can either golfer hit a hole in one with this velocity and angle?
- aywoo401
- · Replies 1 ·
What is the relationship between heat loss and resistivity in a cable?
- dinhjeffrey
- · Replies 1 ·
How Do You Calculate the Impact Speed of an Asteroid?
- Gawdany
- · Replies 3 ·
Distributed load - model bridge project
- aidan.s
- · Replies 1 ·
How to Calculate Angular Speed of a Rotating Turntable with Added Mass
- elsternj
- · Replies 6 ·
Calculating the mass of the moon given radius.
- cruisx
- · Replies 8 ·
Why are magnetic forces not always conservative?
- lookingforhlp
- · Replies 1 ·
Concept of Field Lines, how Electricity vs Gravity
- flyingpig
- · Replies 1 ·
Particles with Spin in a Box - Energy Levels
- erok81
- · Replies 10 ·
Complex impendance in RL circuit
- shakaflaka
- · Replies 2 ·
Spring Energy Problem Conservative forces
- GenericHbomb
- · Replies 4 ·
Efficiency calculations for bouncing ball lab with different masses and surfaces
- annamae
- · Replies 1 ·
Sound Interference - Radio Broadcast
- dvolpe
- · Replies 9 ·
What is the Correct Equation for Calculating the Length of a Spring?
- dinhjeffrey
- · Replies 3 ·
Bead Parabola Accelerometer
- AlexChandler
- · Replies 7 ·
Why is the maximum wavelength 8.00 m, not 4.00 m?
- planauts
- · Replies 7 ·
What will be the image distance when he reverses the mirror ?
- cclement524
- · Replies 2 ·
How Do You Calculate Work and Potential Energy in Physics Problems?
- hassanaw
- · Replies 4 ·
Gas law and finding the pressure
- Scarlet_pat
- · Replies 2 ·
Calculating Heat Capacity for Cage Weight of 1000 kg at 9 m/s
- Scarlet_pat
- · Replies 3 ·
Statics problem - is the mistake mine or the solution manual?
- Femme_physics
- · Replies 6 ·
Calculating the Total Resistance of a Composite Wire
- ninanoorable
- · Replies 4 ·
Magnetic field direction in Helmholtz coils
- MitsuShai
- · Replies 1 ·
What is the relationship between the width of an open organ pipe and its pitch?
- zorro
- · Replies 9 ·