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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Conduction and displacement current density
- tiagobt
- · Replies 1 ·
Standing Waves (tension vs. wavelength)
- furiouspoodle
- · Replies 6 ·
Thompson's Jumping Ring with the ring in the centre of the solenoid
- catkin
- · Replies 1 ·
Solving a Student's Experiment on an Ideal Gas: Molar Specific Heat Capacity
- Maori_Rights
- · Replies 1 ·
Acceleration vs. mass (kg) graph
- L²Cc
- · Replies 2 ·
Can Quantum Physics Calculations Be Troublesome?
- lily15
- · Replies 1 ·
Gravitational field due to a cylinder
- asrodan
- · Replies 2 ·
Magnetic field in coaxial cables
- A_B
- · Replies 1 ·
Electric field inside the bulb
- luckyducky
- · Replies 1 ·
What Are the Energy Levels of a Quantum Object with Three Bound States?
- clutch12
- · Replies 1 ·
To Find The Height Of a Room by an Experiment using Simple Pendulum
- srijit92
- · Replies 1 ·
Density of a solid and Clapeyron equation
- LCSphysicist
- · Replies 7 ·
Popsicle stick bridge with 4cm thickness limit
- DefyPhysics
- · Replies 1 ·
Problems on engineering mechanics
- sage
- · Replies 1 ·
Series circuit problem - am I correct?
- bcjochim07
- · Replies 3 ·
Dirac delta function (DE problem) solved
- ESPCerpinTaxt
- · Replies 1 ·
How Do You Measure Thermal Conductivity and Dimensions of a Boiling Tube?
- ivylim88
- · Replies 1 ·
Distance between atoms based on density
- farleyknight
- · Replies 1 ·
Why does the steel ball projectile launcher give different speeds at different angles?
- realslow
- · Replies 1 ·
Why are certain procedures necessary in a potentiometer experiment?
- hunter
- · Replies 1 ·
Calculating the direction and magnitude of the magnetic field in a 3D plane
- mike115
- · Replies 2 ·
Best way to measure period of a pendulum.
- TripleB
- · Replies 1 ·
Finding the velocity for a given centripetal acceleration
- sh86
- · Replies 1 ·
Determine the change in the kinetic energy
- pcandrepair
- · Replies 1 ·
How Does Frictionless Pulley Affect Acceleration in a Modified Atwood's Machine?
- Vixenbergen
- · Replies 3 ·
Why is copper diamagnetic without a prefix?
- schrodingerscat11
- · Replies 1 ·
Magnetic field at a point due to current carrying wires
- bilals
- · Replies 1 ·
Electromagnetic waves [simple one]
- cupcake
- · Replies 1 ·
Find the charge of 2 point charges, given Uelec and total charge
- kitters
- · Replies 1 ·
Speed of Tsunamis: 650 km in 4.9 hrs = m/s
- sheri1987
- · Replies 1 ·
Precautions for Accurate Temperature Measurement in Cooling Experiment
- exec
- · Replies 1 ·
How Does Centripetal Force Relate to Frequency, Speed, Mass, and Radius?
- Karma
- · Replies 1 ·
Rotational analysis of chain and sprockets system
- spaghetti3451
- · Replies 1 ·
Air Conditioner: Refrigerator or Heat Pump?
- xinlan
- · Replies 1 ·
Using Kinematic equations to describe a falling object
- 4.19mile
- · Replies 1 ·
Archimedes' Principle - Submerged object in a fluid
- somemonkey
- · Replies 1 ·
Calculating Atomic Bomb Shockwave and Blast Radius Formula
- armandop
- · Replies 1 ·
Calculating Tension in a Two Pulley Atwood Machine
- rossel
- · Replies 1 ·
Car decelerating to avoid hitting an obstacle
- shuumi
- · Replies 57 ·
How long does it take the sun to melt a block of ice?
- angelbluw15
- · Replies 1 ·
Electric field and electric forces
- Olgapoollamas
- · Replies 5 ·
Electric Field Vector for point charge
- hteezy
- · Replies 1 ·
Solving Two Speaker Intensity Problem: f1, f2, f3
- amatol
- · Replies 1 ·
What is the relationship between tension and number of loops in a standing wave?
- rvhockey
- · Replies 1 ·
Ray diagram for a small bulb with a convex lens
- marla1
- · Replies 1 ·
Charge-to-mass ratio of electron/proton
- jdc22
- · Replies 1 ·
Single phase transformer equivalent circuit referred to primary side
- ns01
- · Replies 1 ·
Evaluating Magnetic Field Measurements on a Cylinder
- smahapatra3
- · Replies 1 ·
Potential Energy and Conservation Energy.
- rock_star
- · Replies 1 ·
A few faraday law questions and emf,
- Pepsi24chevy
- · Replies 1 ·
Resistor, capacitor, and inductor in series
- goWlfpack
- · Replies 1 ·
Electric Field Strength Inside Concentric Uniformly Charged Spheres
- forestmine
- · Replies 1 ·
Relationship between wavelength and voltage?
- maiae
- · Replies 1 ·
Estimating breaths per lifetime and global resource use by order of magnitude
- kphys
- · Replies 1 ·
How Does Kinetic Energy Change in a Partially Inelastic Collision?
- rolodexx
- · Replies 1 ·
Snell's Law Question: Fish in a Fish Tank
- JamesEarl
- · Replies 1 ·
Optical path length through glass, water, and polystyrene
- istinkatphysics
- · Replies 1 ·
Theoretical Resistance Vs Experimental
- multiix
- · Replies 2 ·
How Do You Find Frequency in an RC Circuit?
- argent
- · Replies 1 ·
Kinetic friction, pulley, inclined plane
- llewis3
- · Replies 1 ·
Derivation of torsion equations
- ckeep
- · Replies 1 ·
Collision, spring and impulse
- Cade
- · Replies 1 ·
Change in density of water with depth
- dvolpe
- · Replies 1 ·
Calculating Mass of Helium in a Balloon
- titanium90
- · Replies 1 ·
The Mouse Trap Car Thread Again
- Fishercat
- · Replies 1 ·
Minimum mirror height to see full body and photograph yourself
- saritche
- · Replies 1 ·
What Minimum Radius Prevents Cars from Leaving the Road on a Steep Hill?
- bfr
- · Replies 1 ·
Building a threaded rod brake for a Science Olympiad vehicle
- michellex
- · Replies 1 ·
Wire & Compass Homework: Effects of Distance & Series Batteries
- cse63146
- · Replies 1 ·
A weight supported by two ropes
- chudd88
- · Replies 1 ·
Thermodynamic Cycle -- Work done as a function of Heat absorbed
- Tesla In Person
- · Replies 3 ·
Electric field strength at a point due to 3 charges
- Tesla In Person
- · Replies 3 ·
Fluid velocity and pipe diameter using the continuity equation
- Bolter
- · Replies 8 ·
When do these two moving particles come together?
- Yigitu17
- · Replies 7 ·
Image position and magnification for underwater spherical lens
- lorenz0
- · Replies 7 ·
Maximum charge on the plates of a capacitor
- lorenz0
- · Replies 2 ·
Motion under gravity
- GFREY
- · Replies 21 ·
How to read velocity from a position-time graph
- knapklara
- · Replies 16 ·
How does the accuracy of the clock change when the spring stretches?
- tomceka
- · Replies 23 ·
Potential energy of a sphere in the field of itself
- Delta2
- · Replies 43 ·
Projectile motion when kicking a ball that lands on an upward slope
- gjh
- · Replies 13 ·
Knowing when to decompose weight vector vs. normal vector
- TRB8985
- · Replies 6 ·
(Introductory SR) Light sent from a spaceship received by Earth
- malawi_glenn
- · Replies 6 ·
Electric Field Inside a Conducting Sphere: Is it Always Zero?
- Tesla In Person
- · Replies 1 ·
Flux of Electric field through sphere
- Tesla In Person
- · Replies 2 ·
Interference of light in thin films
- jerry222
- · Replies 6 ·
Lens Calculations using Refractive Index
- nao113
- · Replies 6 ·
The relationship between physical and perceptual quantities
- nao113
- · Replies 2 ·
Internal Energy of Gas and Work done
- Tesla In Person
- · Replies 10 ·
Electric Potential Field Calculation
- nownow
- · Replies 9 ·
Why backing material matters in colorimeter reflectance mode
- xp2334
- · Replies 1 ·
Solving Heat Transfer Equations for Rtot: Understanding Units and Formulas
- stunner5000pt
- · Replies 2 ·
How Is Delta_h Calculated in Physics Problems?
- annamal
- · Replies 20 ·
Finding total distance from velocity-time graph with trapezium method
- Eobardrush
- · Replies 7 ·
Given two Earth satellites, A and B, find the potential energy/kinetic energy
- MiSTSiM
- · Replies 13 ·
Deviation of Plumb Bob In Uniform Circular Motion
- mopit_011
- · Replies 11 ·
Virtual Work and Static Equilibrium
- NovatoOfPhysica
- · Replies 3 ·
Leg suspended in a traction system
- annamal
- · Replies 18 ·
EMF induced in a wire loop rotating in a magnetic field
- LCSphysicist
- · Replies 4 ·
Degree of freedom for a rotor and particle system
- LCSphysicist
- · Replies 11 ·