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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Finding amplitude of a circular wavefront without wavelength
- randyrandy
- · Replies 22 ·
Magnetic field Cancellation in AC wires (How?)
- HAgdn
- · Replies 5 ·
Understanding Average Speed in Graph Analysis
- lioric
- · Replies 25 ·
Throwing a baseball while standing on an Asteroid
- takelgith
- · Replies 5 ·
Projectile question — Cannonball fired over a hill
- dyn
- · Replies 5 ·
Maximum speed of mass released on a spring: energy balance vs SHM
- Naraliya
- · Replies 21 ·
What are the correct conditions for Simple Harmonic Motion?
- Bolter
- · Replies 2 ·
How much force does a moving car exert on to the road?
- MustafaTekinay
- · Replies 13 ·
5 charges placed at 5 vertices of a regular hexagon
- Apashanka
- · Replies 7 ·
Using a rope to pull a box across a floor (problem with friction)
- studentgrade12
- · Replies 2 ·
Will the induced electric field be circumferential?
- Adesh
- · Replies 25 ·
Interpreting pie and bar charts
- BlueKaiza
- · Replies 1 ·
Maximum Distance a Projectile Moves Up an Inclined Plane
- EnricoHendro
- · Replies 7 ·
Forces on spheres in a cylinder
- emmettfoner
- · Replies 4 ·
What other information is needed to solve this equation involving b?
- leomarrg
- · Replies 13 ·
Work-energy principle for a block fired up a vertical track
- Andrew1234
- · Replies 7 ·
Thermodynamics energy balance for control volume
- Andrew1234
- · Replies 1 ·
Electrostatics question (Work and Potential)
- Irishdoug
- · Replies 9 ·
Is 51 micro joules the maximum kinetic energy of this pendulum?
- Bolter
- · Replies 4 ·
Time period of a mass spring system
- Bolter
- · Replies 5 ·
Transfer characteristic of this circuit
- Flying_Dutchman
- · Replies 3 ·
Work, power and energy assignment marked wrong somehow?
- jordanbeaton
- · Replies 2 ·
Net force and moment on a wooden bar fixed at one end
- brotherbobby
- · Replies 16 ·
Working out velocity of particle moving in SHM
- Bolter
- · Replies 1 ·
Ridiculously difficult Newtonian physics problem
- Mason Pulinthanathu
- · Replies 12 ·
How can we solve for both T₂ and m in a system with multiple unknowns?
- rtareen
- · Replies 7 ·
[Equation Validity] - Current Characterization (AC) in Sockets
- HAgdn
- · Replies 4 ·
Work done by a force along the path
- MyoPhilosopher
- · Replies 21 ·
Why Does Calculating Tension in Multiple Blocks Require Different Forces?
- arianemati
- · Replies 2 ·
Why Does Projectile Motion Involve Zero X-Component Acceleration?
- jamiebean
- · Replies 9 ·
Is Gravitational Acceleration Positive or Negative in Upward Motion Problems?
- jamiebean
- · Replies 2 ·
Projectile Motion — How far from the gun does the bullet land?
- Tinkylo
- · Replies 5 ·
Pressures in a U Tube along a line - different liquids
- brotherbobby
- · Replies 22 ·
Drum and Cable Problem - Formula and Workings
- perfexa
- · Replies 3 ·
Calculating Moment: Addition of Torque Components
- Saptarshi Sarkar
- · Replies 3 ·
Resistivity equation relating to equations for resistors
- lpettigrew
- · Replies 23 ·
Why does a truck stop shorter when a crate slides on it?
- Andrew1234
- · Replies 19 ·
Poisson's equation: Calculating the Laplacian of an electric potential
- threeonefouronethree
- · Replies 3 ·
Behavior of Current in an AC mains wire
- HAgdn
- · Replies 1 ·
Evaluate the electric field for two slabs of charge
- zelscore
- · Replies 2 ·
A derivation of the Vdc in a fullwave rectifier with smoothing?
- patric44
- · Replies 3 ·
Why does the heavier cart get greater velocity than the lighter one?
- VitaminK
- · Replies 11 ·
Tension forces of two wires in comparison to the gravitational force
- volcore
- · Replies 23 ·
Electric field from a charge q1
- happyparticle
- · Replies 10 ·
Meter Stick Lab Systematic Error
- andacbaba123
- · Replies 1 ·
Static friction — Experiment pulling different blocks across a surface
- Kolika28
- · Replies 18 ·
What is the frequency of the second harmonic on the A-string in guitar tuning?
- RicoY65
- · Replies 3 ·
Young's modulus calculation for a steel bar
- chriscarson
- · Replies 9 ·
How do you find the initial velocity of a projectile given angle/distance?
- iamcgettigan
- · Replies 3 ·
Did I apply Faraday's law correctly to find 0.73V EMF?
- Bolter
- · Replies 9 ·
Finding the height of a focus point via ray tracing @ Snell's Law
- peeballs
- · Replies 9 ·
Slip stick motion and a glass harp (singing glasses)
- fizzyfiz
- · Replies 1 ·
The closest approach of two ships
- gnits
- · Replies 4 ·
Revolving disc in a magnetic field
- Bolter
- · Replies 2 ·
Calculating force from stress and Young's modulus
- chriscarson
- · Replies 9 ·
A critically damped simple harmonic oscillator - Find Friction
- muskaanhamad
- · Replies 1 ·
Why does 2Δx = Δy in a pulley problem?
- UniqUnicJohni
- · Replies 4 ·
Flux due to a charge located at the corner of a cube
- SmartAries
- · Replies 6 ·
Calculate the charge flowing in the coil if the field is removed
- Bolter
- · Replies 14 ·
Irodov problem 1.12 — A 3-body gravitational attraction problem
- John10086
- · Replies 14 ·
Where Will Earth's Magnetic Field Cancel a Wire's B-Field?
- Bolter
- · Replies 5 ·
When to use the Lumped Capacitance method in Heat Transfer problems?
- Sabra_a
- · Replies 1 ·
Calculate the Pressure that Shrink film exerts on a cylinder
- Sjaak
- · Replies 1 ·
How do atoms emit different photon energies?
- Jeff97
- · Replies 6 ·
How can I draw a motion diagram?
- bri_garcia11
- · Replies 1 ·
If the projectiles follow the parabolic paths shown, who is hit first?
- fer Mnaj
- · Replies 16 ·
Identity involving the vectors for position, velocity and aceleration
- fer Mnaj
- · Replies 26 ·
Balancing torques with weights hung from a 1 meter rod on a fulcrum
- Quix270
- · Replies 27 ·
Calculating Power and Force in Cycling: Solving for Force in the Equation P=Fv
- oisdas
- · Replies 4 ·
Uncertainties in a set of measurements
- KDPhysics
- · Replies 5 ·
What Determines the Maximum Slope Before a Cylinder on an Incline Moves?
- fedecolo
- · Replies 23 ·
Three Charges inside a Metal Sphere
- student49
- · Replies 4 ·
How to calculate the Resultant force due to a Lever arm?
- JPakt
- · Replies 5 ·
Group velocity and the dispersion relation
- Kaguro
- · Replies 9 ·
Determining speed at an angle using an energy balance
- BiggestAfrica
- · Replies 5 ·
Finding final velocity in uniform acceleration motion
- ebuwsu
- · Replies 8 ·
Dimensional Analysis for Multi-Layer Flow Equations
- Ben_Walker1978
- · Replies 24 ·
New full scale deflection of an ammeter
- Bolter
- · Replies 2 ·
Finding the value of this load resistor
- Bolter
- · Replies 2 ·
Calculate the multiplier resistance
- Bolter
- · Replies 1 ·
What is the Correct Value of Multiplier Resistance?
- Bolter
- · Replies 1 ·
Optics: Destructive Interference
- SHAWN JAMES
- · Replies 1 ·
Tips for Successful Online Learning
- Ras12
- · Replies 2 ·
Olympiad Mechanics problem (torque)
- Ceva
- · Replies 46 ·
Isothermal pressure change in a U-shaped tube
- obstinatus
- · Replies 4 ·
Finding the final velocity with quadratic drag
- CrosisBH
- · Replies 6 ·
What is the relationship between wave speed and frequency?
- Fra Ser Mur Chie
- · Replies 3 ·
Entropy change for two masses of water mixed adiabatically
- LancsPhys14
- · Replies 1 ·
Projectile motion on an inclined plane: finding time and velocity conditions
- songoku
- · Replies 7 ·
Equation for the propagation of the crest of a wave
- songoku
- · Replies 6 ·
'A' Level question on capacitors
- jezza10181
- · Replies 6 ·
Potential difference between the surface of a sphere and a point far away
- songoku
- · Replies 13 ·
Force on current-carrying wire in magnetic field
- Jimmy87
- · Replies 3 ·
A question involving the Uncertainty Principle
- V Sri
- · Replies 21 ·
Two pendula connected by a spring - normal modes
- physconomics
- · Replies 1 ·
The Q factor of the nuclear reaction problem?
- patric44
- · Replies 2 ·
Calculate the equilibrium concentration of CO2 in beer in grams/liter
- sci0x
- · Replies 12 ·
What is the toll for an electron to escape a metal surface?
- Jeff97
- · Replies 9 ·
Ring attached to elastic and inextensible strings
- songoku
- · Replies 8 ·
Wavelength of the red colour of this helium discharge tube
- songoku
- · Replies 4 ·