Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Magnitude and direction of magnetic field
- Biosyn
- · Replies 6 ·
Best material to minimize Impulse?
- mhz
- · Replies 2 ·
Pulley Problem Dealing with Torque
- PeachBanana
- · Replies 7 ·
Why Is the Pendulum's Center of Mass Calculation Confusing?
- CNS92
- · Replies 7 ·
Induced current in a two-loop circuit
- OtherWindow
- · Replies 7 ·
Simple Harmonic Motion - basic question
- oakk
- · Replies 2 ·
Calculating Density: A Challenge for Aviation Maintenance Students
- AMTSOUTH
- · Replies 23 ·
Statics Mechanics: Looking for the flaw in my logic
- Femme_physics
- · Replies 19 ·
Solve Darryl's 2-D Vector Problem: Distance & Displacement
- stephmaep
- · Replies 6 ·
Schrodinger and Infinite Square Well hell
- shyguy79
- · Replies 2 ·
Submarine Sinking: Calculate Volume Needed to Flood
- p.mcnamara
- · Replies 1 ·
Calculating the wavelength of a laser? (Diffraction grating)
- Modrisco
- · Replies 6 ·
Optics-Critical Angle in Different Mediums
- physgrl
- · Replies 11 ·
Finding the Center of Mass for Stacked Cubes of Different Masses
- PeachBanana
- · Replies 2 ·
Constructing an Egg Drop Contraption
- voutetesbelle
- · Replies 15 ·
Electric field = 0 at what point on x axis?
- connor02
- · Replies 15 ·
Find the direction of the induced current
- bsmm11
- · Replies 1 ·
What Is the Magnetic Force on a Single Electron?
- jsmith613
- · Replies 4 ·
Energy Problem involving Spring
- testme
- · Replies 1 ·
Solving Emergency Problem Involving Rod Rotating Around Z Axis
- ShayanJ
- · Replies 3 ·
Free fall of straight wire in a homogeneous magnetic field
- alkmini
- · Replies 2 ·
Kinematics of Rigid Bodies in 3D
- yoft
- · Replies 1 ·
How Does a Vernier Caliper Work?
- babita
- · Replies 2 ·
The back EMF of a DC motor spinning at full speed
- OmegaFury
- · Replies 13 ·
Elastic Potential Energy of a Sprin
- testme
- · Replies 4 ·
Two planets of equal density, what do they share?
- 1MileCrash
- · Replies 7 ·
Ball rolling down a surface - where is the axis of rotation?
- lillybeans
- · Replies 2 ·
How can I prove the inequality A(B-A) <= (B/2)^2 for 0 <= A <= B?
- ausdreamer
- · Replies 3 ·
Why Does the Compass Turn Right? Solve the Mystery!
- superjose
- · Replies 2 ·
Kinetic energy of space probe launched from planet
- 1MileCrash
- · Replies 3 ·
Solve Kinematics Problem: Find Distance Traveled Till t=5
- babita
- · Replies 2 ·
Magnetic Field involving solenoids
- McAfee
- · Replies 5 ·
Magnetic fields - which direction
- jsmith613
- · Replies 4 ·
Very confused: why is the path difference in double slit interference dsinθ?
- lillybeans
- · Replies 4 ·
Moment of Inertia of Spheres/Discs: Adding & Dependency
- kushan
- · Replies 3 ·
Amount of energy rerquired to raise temperature
- chaotiiic
- · Replies 4 ·
Power rating of a heater in the same outlet as a hair dryer
- OmegaFury
- · Replies 4 ·
How to calculate power from angular frequency of LRC circuit
- MeMoses
- · Replies 8 ·
Is this the Wavelength? (Diffraction)
- Modrisco
- · Replies 1 ·
Pivoted rod - impulse applied so no horizontal force on pivot
- Aaron7
- · Replies 1 ·
Skater. Angular Momentum. Velocity.
- PeachBanana
- · Replies 11 ·
What is the equation switched capacitors
- dddd12349999
- · Replies 3 ·
How can I find the number of turns in a solenoid winding?
- kdawg4
- · Replies 3 ·
Calculate Delta T expected from E transferred to internal heat of H2O
- CrPhys
- · Replies 1 ·
Messed up joules and Newtons in an exam
- valmancer
- · Replies 9 ·
A problem on time taken by relativistic particles
- visharad
- · Replies 2 ·
Z Center of mass of an ice cream cone
- Trish1234
- · Replies 9 ·
Charging and discharging capacitors - current time graph
- jsmith613
- · Replies 23 ·
Very quick insulating sphere electric field question
- binbagsss
- · Replies 1 ·
What is the Total Impulse Applied to the Box?
- yesiammanu
- · Replies 2 ·
Torque required to stop wheel in 41.2s?
- 03sto
- · Replies 2 ·
Trying to derive the time dilation formula
- Mark
- · Replies 9 ·
Angular frequency of a mass between two springs.
- Aesteus
- · Replies 5 ·
Finding angular frequency about the equilibrium position.
- Aesteus
- · Replies 6 ·
Frequency of girl bobbing in swimming pool
- kevlar94
- · Replies 3 ·
Calculating velocity at a certain time
- phyyy
- · Replies 2 ·
Special relativity - A problem on velocity addition (several increments)
- visharad
- · Replies 1 ·
Increasing the efficiency of a simple electric motor?
- CosB
- · Replies 11 ·
Position of particle in infinite potential well
- Froskoy
- · Replies 2 ·
Covariant and contravariant vecotr questions
- drlang
- · Replies 3 ·
How Do You Determine the Frequency of a Mass Connected to Four Springs?
- Aaron7
- · Replies 5 ·
Two Physics problems (angular velocity/acc) and Force by a stopper
- Kalookakoo
- · Replies 1 ·
Tricky Magnetic Field Question (Proton Enters Magnetic Field )
- Plutonium88
- · Replies 8 ·
Vectors- gradient and normal unit vector- is this correct?
- tomanator
- · Replies 12 ·
Phase Difference for Light Passing Through Two Slabs
- Rome_Leader
- · Replies 1 ·
Max Harge on a Capacitor in LC Circuits
- DODGEVIPER13
- · Replies 3 ·
Finding displacement from PE and KE?
- Fei Long
- · Replies 2 ·
LR Circuit with resistors in parallel
- OtherWindow
- · Replies 3 ·
Misunderstood Thermodynamic question
- Abdlellah
- · Replies 12 ·
Centrifugal Force Homework: Relationship to Radius?
- nobleman
- · Replies 4 ·
How Does Wheel Radius Affect Rotational Kinetic Energy?
- truho
- · Replies 4 ·
What temperature does Cl2 need to escape Earth?
- Sherman91
- · Replies 3 ·
Center of mass with one object moving
- DrummingAtom
- · Replies 5 ·
Connect a Battery to a Solenoid - Current through a rectangular coil
- LordessCass
- · Replies 20 ·
Adiabatic Gas Expansion: What are the Final Pressure and Internal Energy?
- fluidistic
- · Replies 20 ·
U-tube filled with water and inmiscible liquid
- xannaxiero
- · Replies 9 ·
Car going up the slope, Power of Engine
- CroSinus
- · Replies 8 ·
Mastering Physics 10.85 - Dynamics of Rotational Motion
- youvecaughtme
- · Replies 7 ·
Finding the tipping point (height at which metacentre = center of gravity?)
- lilphys
- · Replies 1 ·
Kinetic Energy/Linear Momentum
- shaggyace
- · Replies 1 ·
Kinematics, finding the displacement and comparing
- stephmaep
- · Replies 2 ·
Linear Momentum Block and Spring Problem
- shaggyace
- · Replies 1 ·
Dynamics question-answer (classic)
- pymn_nzr
- · Replies 4 ·
Direction of magnetic field - moving charge
- jsmith613
- · Replies 3 ·
What is the period of oscillation of the mass on the spring?
- ScienceGeek24
- · Replies 6 ·
Solving the Eletrodynamics Basic Homework Statement
- vivekrai
- · Replies 7 ·
Deriving formula for final intensity of light through three polarizers.
- t_physics
- · Replies 1 ·
Forces and getting acceleration of two objects
- madinsane
- · Replies 2 ·
Forces, I want to get the magnitude of the acceleration for the following problem ple
- madinsane
- · Replies 2 ·
Why Must Velocities Remain Constant in a Momentum Conservation Demonstration?
- jsmith613
- · Replies 3 ·
Question involving resistivity using the formula?
- einstein101
- · Replies 6 ·
Calculating Size of Star Image with Converging Lens
- Emilyjoint
- · Replies 8 ·
Force on an electron between two parallel plates
- bsmm11
- · Replies 1 ·
Finding potential difference across capacitor plates?
- cheap_noob
- · Replies 5 ·
Calculating drift velocity of electrons in a conductor
- michellewong
- · Replies 1 ·
Box being pulled across horizontal floor with friction
- rocapp
- · Replies 1 ·
Weight of an object sliding on an incline
- Ekleziastike
- · Replies 3 ·
Conservation of momentum with unknown angles
- Chrismiss
- · Replies 1 ·
Phase of current and voltage in LCR network
- Froskoy
- · Replies 2 ·
Hydrostatic pressure in the Bernoulli Equation
- JJBladester
- · Replies 1 ·