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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Electric field inside and outside a uniformly charged sphere using Gauss's law
- liliphys
- · Replies 2 ·
Saturn V thrust and momentum of sand in railway truck
- Auron87
- · Replies 3 ·
What does it mean to find a formula as a function of temperature
- jlmac2001
- · Replies 4 ·
Entropy change as ice melts from 0°C to 25°C
- jlmac2001
- · Replies 2 ·
How Does Changing Plate Separation Affect Energy Stored in a Capacitor?
- eku_girl83
- · Replies 2 ·
Calculating Inductance of a Tightly Wound Solenoid
- karbear
- · Replies 4 ·
What are some ideas for building a car powered by Newton's third law?
- PaoMian
- · Replies 2 ·
Graphing the derivative of a graph
- ACLerok
- · Replies 2 ·
Damped mass-spring oscillation: is the differential equation correct?
- formulajoe
- · Replies 3 ·
Physics Problem: Drawing Vector Diagrams
- BobbieN
- · Replies 2 ·
What Are the Latest Innovations in Superglue Materials?
- decibel
- · Replies 3 ·
Why isn't the force 1N times the gravitational constant?
- holly
- · Replies 7 ·
Initial conditions for normal modes of gas in a tube
- Sol_Solved
- · Replies 2 ·
Completing the square with a coefficient on x²
- Math Is Hard
- · Replies 2 ·
Calculating Resistance of Aluminum Cylinder
- Roary
- · Replies 2 ·
Work done by a rope pulling a cart at 28.5°
- bossalinie786
- · Replies 3 ·
Is the force field central for a spiral orbit r = aθ³?
- mark9696
- · Replies 11 ·
Graphing the derivative of a function with a cusp
- ACLerok
- · Replies 3 ·
Finding the integrating factor for (1-xy)y' + y² + 3xy³
- discoverer02
- · Replies 2 ·
Rearranging a differential equation solution from implicit to explicit form
- discoverer02
- · Replies 3 ·
Find the solid angle subtended at the orgin
- jlmac2001
- · Replies 2 ·
Is the Triangular Lamina Stable When Suspended from Point C?
- BLUE_CHIP
- · Replies 2 ·
How Far Does a Bus Travel After Accelerating and Decelerating?
- exemplarysam
- · Replies 2 ·
What is the angle of the electric field near a charged rod and two balloons?
- SparkimusPrime
- · Replies 8 ·
Is the Orbital Energy of a Comet Elliptic, Parabolic, or Hyperbolic?
- student1938
- · Replies 12 ·
Calculating induced emf and transformer turns ratios
- mustang
- · Replies 2 ·
Calculating Forces on Boy Sledging Down Slope
- raging_hippo
- · Replies 2 ·
Finding the Polar Equation of a Circular Orbit in a Central Force Field
- mark9696
- · Replies 7 ·
Air Resistance: Solve Your Questions Here
- SsUeSbIaEs
- · Replies 2 ·
Tension Pull problem w/friction
- cocomoj
- · Replies 6 ·
How far does a projectile travel in a given time?
- holly
- · Replies 6 ·
Solve a Simple Kinematic Question: Space Shuttle Landing Acceleration
- b_rudi
- · Replies 2 ·
Finding the Speed of a Point on a Rotating Grinding Wheel
- SsUeSbIaEs
- · Replies 5 ·
How do I integrate arcsin x by parts?
- agro
- · Replies 4 ·
Calculating Cutoff Frequency with Oscilloscope and Coaxial Cable
- Reason
- · Replies 4 ·
Solving Standing Waves/Nodes: 230 Hz, Harmonic Order, Fundamental Freq
- tandoorichicken
- · Replies 2 ·
Electric Field w/ Continuous Charge Dist.
- oooride
- · Replies 8 ·
Constant acceleration with initial and final position and velocity
- Beretta
- · Replies 2 ·
How can I solve equations without graphing?
- repugno
- · Replies 5 ·
Finite Rotations: Prove D^(1/2)[R]
- Norman
- · Replies 2 ·
Why Is It Hard to Find Images of Mobius Syndrome Online?
- Dagenais
- · Replies 3 ·
Finding charge Q2 when electric field is zero at point P
- Zeus
- · Replies 13 ·
Calculating Work Done by a Spring with Initial Compression
- AngelofMusic
- · Replies 3 ·
Moment of inertia of a rectangle and disk
- jlmac2001
- · Replies 3 ·
Magnitude of acceleration of electron in electric field
- Spectre32
- · Replies 3 ·
What Distinguishes Internal Forces from External Forces?
- Canuck156
- · Replies 2 ·
Finding Values for Theta in Vertical Plane Rotation Problem
- AngelofMusic
- · Replies 3 ·
Electricity, Conducting Plates and Magnetic Fields
- Zeus
- · Replies 3 ·
Air kinetic energy and Vrms of N2 and O2 at 293K
- cowgiljl
- · Replies 2 ·
Inductors i think it'll make an harmonic type of move
- ismael18
- · Replies 2 ·
How Much Energy Is Needed to Freeze Water and Melt Ice Through Friction?
- tbwtki
- · Replies 2 ·
How to Find Vector Magnetic Potential A from Magnetic Flux Density B?
- jezse
- · Replies 2 ·
Ice thickness in a pond with temperature gradient
- Rockdog
- · Replies 2 ·
Annoyinlgy easy problem with thermodynamics that I can't get my head around
- Claire84
- · Replies 2 ·
Diagram & Calculations for Pulley System with Masses 8kg, 2kg, and 4kg
- mcintyre_ie
- · Replies 2 ·
Are My Physics Problem Answers Correct?
- cowgiljl
- · Replies 2 ·
Can't solve any kinematics or forces problems on my own?
- Maxwell
- · Replies 6 ·
How Is Magnetic Field Generated by a Stream of Protons?
- PhysicsChick
- · Replies 2 ·
Can I show my solution? Linear Algebra
- franz32
- · Replies 4 ·
Solving the Group O(n) Generator Problem
- Norman
- · Replies 9 ·
Checking 7 rotational motion homework answers
- pedestrian
- · Replies 2 ·
Different colored light on solar panels?
- algilaera
- · Replies 5 ·
Acceleration Questions: Answers to Solve Equations
- xyxaprilxyx
- · Replies 2 ·
How Do Sound Waves Measure Water Depth in Physics Coursework?
- Jay_102
- · Replies 4 ·
First-year physics formulas and when to use them
- holly
- · Replies 41 ·
Ferry Velocity and Passenger Motion: Solving for Direction and Magnitude
- tgoot84
- · Replies 3 ·
Calculate the magnitude of the tension force in the rope
- psruler
- · Replies 5 ·
Finding the Angle of Release for a Pellet on Top of a Cylinder
- Bling
- · Replies 4 ·
What is the equivalent resistance when diagonal resistors are present?
- Roary
- · Replies 8 ·
Find the vertical component and friction
- DaveSauce
- · Replies 2 ·
Calculating Minimum Speed for a Bicycle Jump Across a Creek
- Beretta
- · Replies 2 ·
Kinetic Energy and Work and Power
- nemzy
- · Replies 6 ·
Work done by stretched hose on balloon when released
- nemzy
- · Replies 7 ·
High Voltage line with a resistance problem
- Spectre32
- · Replies 2 ·
What is the magnetic field produced 2.0 m from a stream of 10 E9 protons/second?
- PhysicsChick
- · Replies 2 ·
Acceleration, speed, distance problem
- Raffi
- · Replies 6 ·
How Do You Calculate Time and Speed in These Physics Problems?
- hyen84
- · Replies 2 ·
Truck collision with spring bumpers: momentum and energy
- Arfrce8729
- · Replies 2 ·
Triple integral of div F over a sphere: volume or surface integral?
- jlmac2001
- · Replies 2 ·
How Do Oceans Function as Buffers?
- Astrophysics
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How Do You Apply the kT>>hw Approximation in Van der Waals Interactions?
- demonslayer79
- · Replies 2 ·
Proving Transitivity of Sets with No Foundation
- yxgao
- · Replies 2 ·
Forces, Torques, and Acceleration
- Arfrce8729
- · Replies 3 ·
My Physics Teacher didn't tell me how to do this
- Earth_kissed
- · Replies 7 ·
UBC Physics Olympics: The Descrambler Event
- guerrilla7
- · Replies 1 ·
Total charge and max current for a 250Ah car battery
- Magna1
- · Replies 7 ·
Calculating the Threshold Mass for Static Friction in a String System
- London Kngiths
- · Replies 3 ·
Circuit with a capacitor problem
- broegger
- · Replies 3 ·
How do I solve for coefficient of friction?
- Sarbear777
- · Replies 2 ·
Lorentz force and magnetic force on current-carrying wire
- mustang
- · Replies 2 ·
Solving Kinetic Friction: Min Force Needed to Prevent Sliding
- devnull
- · Replies 2 ·
Finding tangent line to 8x³y² + x²y⁵ + 6 = 4y⁴ - 3x⁴ at (1,3)
- Cod
- · Replies 8 ·
How do I find electric force on a charge without its coordinates?
- NINHARDCOREFAN
- · Replies 2 ·
Can I Calculate the Momentum of Two Colliding Cars?
- Addison
- · Replies 2 ·
Difference between mass, force, newtons, slugs and gravity in pounds and kilograms
- Hollywood Dave
- · Replies 2 ·
Fundamental Wavelength of Vibration of Steel Wire 1m Apart
- tandoorichicken
- · Replies 4 ·
How Does Changing a Gaussian Surface's Shape Affect Net Flux?
- pringless
- · Replies 2 ·
Surface charge density of spherical conductor with given potential
- NINHARDCOREFAN
- · Replies 14 ·
Football Punter's Force: 0.55kg at 8m/s in .25s
- DeBbIeFrIcKeNrAy
- · Replies 2 ·
Possible arrangements for a deck of 52 playing cards?
- jlmac2001
- · Replies 2 ·