Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
What is the moment of inertia of a disc and rectangular plate system?
- dreamz25
- · Replies 12 ·
Electric Field inside a nonconducting sheet
- forestmine
- · Replies 3 ·
Calculating Young's Modulus of Elasticity for 0.1% Carbon Steel
- MMCS
- · Replies 2 ·
Special Relativity (1-dimensional Lorentz Transformation)
- Harrisonized
- · Replies 5 ·
Linearising compound pendulum equation
- seboastien
- · Replies 8 ·
Constant potential inside spherical shell
- physicsjock
- · Replies 3 ·
What is the Length of a Tensioned String?
- BOYLANATOR
- · Replies 4 ·
Find the size of Driving couple, if given the power?
- alec433lawrid
- · Replies 2 ·
Vectors angle: arctan(4/0) = error?
- LearninDaMath
- · Replies 9 ·
Does a balloon's temperature increase when a balloon is popped?
- Elizabeth Lil
- · Replies 4 ·
What is the torque if the rope is attached
- chaotiiic
- · Replies 3 ·
Comparing the Heights of Water and Gasoline Columns in an Open U-Tube
- CherryXBOMB
- · Replies 1 ·
How Is Induced Current Calculated in a Moving Bar Near a Wire?
- Lizziecupcake
- · Replies 2 ·
Kinetic Theory and Elastic Collisions
- Opus_723
- · Replies 5 ·
Help with lens selection and arrangement for maginification
- bradg
- · Replies 1 ·
Calculating Number of Electrons in a Copper Wire | Electric Field HW Help
- try2be12
- · Replies 1 ·
Differentiating Vector Products
- Identify
- · Replies 2 ·
Momentum of spring between two objects
- moonbase
- · Replies 4 ·
Motion questions and a mass one.
- joshptyltd
- · Replies 1 ·
Moments and the line of action of the resultant force
- nonyabus
- · Replies 4 ·
Calculating Electric Flux Through a Cone
- forestmine
- · Replies 6 ·
Waves Unit- Angle of Incidence
- epik high
- · Replies 1 ·
Electrostatics - point charges and work
- HenryHH
- · Replies 1 ·
Center of Mass Rowboat Question
- sweetpete28
- · Replies 4 ·
Kinematics: acceleration and speed
- mrsshakes
- · Replies 1 ·
Center of Mass bounded by Equations
- nat1
- · Replies 5 ·
Understanding Algebra: The Mystery of the Middle Term Explained
- Rob D
- · Replies 9 ·
Elliptical motion about the origin
- Identify
- · Replies 5 ·
Induced emf in a loop from time-dependent current in a wire
- kjlchem
- · Replies 3 ·
Schrodinger equation, normalizing
- SoggyBottoms
- · Replies 3 ·
AC circuit steady state expression
- pyroknife
- · Replies 1 ·
Average Force using Newton's Laws of Motion
- AshNotKetchum
- · Replies 5 ·
Angle between B-Field and X-axis
- hanagasumi
- · Replies 8 ·
Optical Path Length Problem in Astrophysics & Interstellar Medium
- Joeseye
- · Replies 1 ·
Object placed in a fluid, both fluid and object are different densities
- mbkau00
- · Replies 15 ·
Circular motion: Car driving along a circular hill
- Acid92
- · Replies 2 ·
Differential Equation - Springs
- τheory
- · Replies 1 ·
Planck constant V in E=qV question
- Paul37
- · Replies 3 ·
Detemining the mass of water vapour in air (Ideal gas law)
- Zewz
- · Replies 1 ·
Orientation of Receiver Antennas given orientation of transmitter
- monke
- · Replies 1 ·
Special Relativity and Decaying Particles
- Rapier
- · Replies 3 ·
Special Relativity and Time Dilation: A Physics Problem in Frames of Reference
- Rapier
- · Replies 11 ·
Coefficient of friction of a Skateboard on a ramp
- Dielere
- · Replies 11 ·
Electron Motion in a Long Solenoid
- jehan60188
- · Replies 2 ·
Calculating E Field Magnitude: Contributions from + and - Charges 5cm Above Axis
- sasuke07
- · Replies 14 ·
Center of Mass, Man, Woman, and Frictionless Ice
- PeachBanana
- · Replies 3 ·
Magnetic field in asymmetric hollow cylinder
- bobred
- · Replies 1 ·
How Fast Must a Plane Fly to Overcome Wind from London to Rome?
- katiefornald
- · Replies 1 ·
Rocket Fuel Problem: Calculating Minimum Fuel Fraction for Rocket Broom Flight
- Bugeye
- · Replies 1 ·
Understanding the Effects of Dielectrics on Capacitors
- maiad
- · Replies 1 ·
Change in potential energy/work formula for electric charges.
- theBEAST
- · Replies 1 ·
Electromagnetic Induction Lab. Magnet through a coil
- Serendipitydo
- · Replies 1 ·
Impact of Adding Resistor on DC Circuit Current
- maiad
- · Replies 3 ·
Center of Mass of an Object A After Breaking
- lowqiumei
- · Replies 1 ·
Is this right?, conservation of energy
- sg001
- · Replies 53 ·
Lifetime of CO2 in Mars atmosphere
- frozenguy
- · Replies 3 ·
What is the ratio of oxygen in the atmosphere at different heights?
- SoggyBottoms
- · Replies 8 ·
Magnetic field along a current-carrying wire (conceptual question)?
- lillybeans
- · Replies 4 ·
What is the Energy Ratio of Two Photons with Different Wavelengths?
- busa428
- · Replies 2 ·
Does a stationary charge experience force from a moving magnetic field?
- Sefrez
- · Replies 2 ·
Combination Problem: Work and Conservation of Momentum
- PeachBanana
- · Replies 9 ·
Determine the unknown property of a perfect gas
- thermo15378
- · Replies 1 ·
Differentiation tricks/shortcuts
- Leb
- · Replies 1 ·
A Mechanics tries to remove an engine from a car by attaching a chain
- teddyayalew
- · Replies 1 ·
How Do You Calculate Angle and Velocity in Particle Motion Analysis?
- Daretodaredar
- · Replies 1 ·
How Do You Calculate Tire Contact Area Using Pascal's Law?
- joe98
- · Replies 3 ·
What is the electric potential derivative when x=2 and y=1?
- IslandHead
- · Replies 1 ·
What is the charge of a point at the center of a ring
- nateja
- · Replies 1 ·
Simple Harmonic Motion with Spring
- getty102
- · Replies 3 ·
Conservation of Momentum in an Elastic Collision
- mrhingle
- · Replies 1 ·
Linear drag in a liquid and terminal velocity
- maxrof
- · Replies 1 ·
Calculate Speed of Hawk's Shadow on Ground
- madinsane
- · Replies 5 ·
Momentums, Ladder against a wall force
- Mukilab
- · Replies 1 ·
Specific Heat Capacity and Energy
- Mukilab
- · Replies 1 ·
Help finding minimum Tension that a rope can withstand without breaking
- mathnoobie
- · Replies 6 ·
How Do I Calculate Air Resistance Force with Vertical Acceleration?
- paperdoll
- · Replies 1 ·
A block is pulled with constant tension up an incline, find the distance?
- clesling
- · Replies 1 ·
Vertical Circular Motion involving centripetal force
- Ammar SH
- · Replies 1 ·
Why Does My Power Calculation Yield Half the Expected Result?
- MMCS
- · Replies 4 ·
Is there a word for the Group with metals, metalloids and non-metals
- GingerNinja
- · Replies 7 ·
How Do You Calculate Display Readings from Pressure in a Cream-Filled Silo?
- joe98
- · Replies 1 ·
Dielectric Influence on Series and Parallel Capacitors
- cellphone
- · Replies 11 ·
Gravity on Moon: How Much Weight Can a Person Lift?
- MoniMini
- · Replies 1 ·
How Does the Electric Field of a Quadrupole Decrease with Distance?
- xaer04
- · Replies 4 ·
How Does a Hollow Conducting Sphere Affect Internal and External Charges?
- IWantToLearn
- · Replies 4 ·
Finding temperature of 270g argon at 160kPa and 1.3m³
- thermo15378
- · Replies 3 ·
Kirchoff Rules: Solving Current for Two Batteries in Parallel
- Alouette
- · Replies 13 ·
Calculus based physics - Energy
- XodoX
- · Replies 1 ·
Speed of EM waves in a baseball park setting
- monke
- · Replies 4 ·
Elastic Collision with a Softball
- PeachBanana
- · Replies 2 ·
Nodal analysis with parallel resistors
- eurekameh
- · Replies 1 ·
Resistive ladder of infinite height
- hopkinmn
- · Replies 10 ·
How Does Power Balance in a Driven RLC Circuit?
- thelonious
- · Replies 1 ·
Velocity required to increase friction?
- aJaguarinRed
- · Replies 5 ·
Acceleration and Friction of a Rolling Cylinder
- hm8
- · Replies 2 ·
How Fast Did My Friend Travel to Alpha Centauri and Back?
- ADCooper
- · Replies 1 ·
Special Relativity. How to use the Lorentz Transformation?
- AlonsoMcLaren
- · Replies 1 ·
Calculating gradient with distance and speed
- Mukilab
- · Replies 5 ·
Weight on a Scale Down an Incline vs. True Weight
- Error
- · Replies 1 ·
Compare centripetal acceleration of Mars and Earth
- shnigglefratz
- · Replies 10 ·