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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Suvat - Two cars approach each other on a straight road
- monkfishkev
- · Replies 11 ·
Projectile Motion of football receiver
- emilytm
- · Replies 9 ·
Acceleration of a block on a moving wedge
- fontseeker
- · Replies 6 ·
How to find internal energy with constant temperature?
- EastWindBreaks
- · Replies 3 ·
Image Magnification: Find Height of Image with f=42
- Noreturn
- · Replies 5 ·
Magnetism: magnetic feild strength of a wire
- physicsStudent00
- · Replies 3 ·
Dew Point -- will we be able to see our breath?
- il27
- · Replies 27 ·
Percentage of Block Energy Dissipated
- Masrat_A
- · Replies 1 ·
Slope of Force vs Frequency^2 and Radius vs Period^2 Graphs
- Stormblessed
- · Replies 6 ·
Dimensional Analysis involving power
- d97
- · Replies 7 ·
Deriving position y(t) for projectile with gravity and air resistance
- Cooojan
- · Replies 7 ·
Dynamics and Circular Motion Problem
- Joseph Hotto
- · Replies 3 ·
Effective cross-section of catching a comet with the Sun
- Oomph!
- · Replies 19 ·
What is the Temperature of a Thermistor at 300K in Celsius?
- Mishal666
- · Replies 18 ·
Is e^(ikx)/(x^2+a^2) Integrateable over All Reals?
- Ashley1nOnly
- · Replies 2 ·
Electric field model using a cylindrical capacitor
- kesaluj
- · Replies 17 ·
Acceleration of a downhill skier
- aron silvester
- · Replies 2 ·
Acceleration along a pulley with a ledge
- fontseeker
- · Replies 16 ·
How Do Friction and Spring Constants Affect Block Velocities?
- chahud42
- · Replies 16 ·
Show that the entropy is non-negative
- patrickmoloney
- · Replies 4 ·
Molar Gibbs Energy: 25{\circ} C Expansion Calculation
- patrickmoloney
- · Replies 1 ·
Electron accelerated through a potential and magnetic field
- doggydan42
- · Replies 3 ·
Calculating Changes in Internal Energy for a Rising Air Parcel
- il27
- · Replies 9 ·
Ammeter and Voltmeter in Series
- Devs
- · Replies 11 ·
How Fast Must a Superhero Accelerate to Catch a Free-Falling Person?
- Ritchie
- · Replies 4 ·
How to calculate the moment of inertia of a system with multiple bodies?
- CollinsArg
- · Replies 1 ·
Force at the Bottom of a Circular Amusement Park Ride
- artireiter
- · Replies 3 ·
What is the Cartesian sign convention for microscope and telescope distances?
- Suyash Singh
- · Replies 1 ·
Water Filling a Cylindrical Container with a Scale Under It
- yellowcakepie
- · Replies 12 ·
Motor lowers a mass over a pulley, find acceleration of mass
- Nicoleeeeeee
- · Replies 3 ·
Calculating Torque for Spinning a 250g Plastic Disk on an Electric Motor in 4.6s
- logan
- · Replies 33 ·
Magnetic field of off center triangle - Biot Savart Law
- asadpasat
- · Replies 1 ·
Find the tension in the cable and the force the ramp exerts on the tires
- mirs08
- · Replies 8 ·
Finding tension at rope ends on a circular pipe
- Poetria
- · Replies 4 ·
How do i choose the Surface area vector in different cases?
- Neolight
- · Replies 11 ·
Determining Coefficient of Friction for Two Boxes with Applied Force
- Dave27
- · Replies 14 ·
Find the simple harmonic equation
- martinbandung
- · Replies 4 ·
When should I use internal energy U or enthalpy H?
- yecko
- · Replies 6 ·
Minimum time to travel 1 km with given acceleration and deceleration limits
- Bestfrog
- · Replies 1 ·
Hockey Puck Collision--momentum problem
- mtruong1999
- · Replies 2 ·
Why Does Enthalpy Change Differ from Heat Change at Constant Pressure?
- yecko
- · Replies 1 ·
Projectile Motion - is this solvable?
- Jrslager
- · Replies 29 ·
Fire Hose Power Output, Given Height and Radius of Hose
- yellowcakepie
- · Replies 8 ·
How to get the internal energy?
- yecko
- · Replies 2 ·
Electric Potential Energy - Final Velocity
- Glendon Koss
- · Replies 2 ·
Kinematic Equation Rearrangement
- EthanG02
- · Replies 1 ·
What should be the work done here?
- Asad Raza
- · Replies 9 ·
Forces and Free-Body Diagrams in Real-World Scenarios
- mirs08
- · Replies 5 ·
Calculating B:I for Helmholtz coils
- Ryaners
- · Replies 2 ·
Can I write -5m/s to the right?
- abc612008
- · Replies 3 ·
Error on slope using LSQ method
- Matt21
- · Replies 5 ·
The Wicked King and the Beautiful Princess - Tension
- Talha Temuri
- · Replies 12 ·
Expressing x(t) of a particle (air resistance)
- Cooojan
- · Replies 2 ·
Gravitational force acting between objects
- Abu
- · Replies 6 ·
Throwing a pen and measuring gravity
- Hawksteinman
- · Replies 10 ·
Completely stumped on this one -- Kinematic Conceptual problem
- ruskointhehizzy
- · Replies 34 ·
Is Angular Momentum Conserved During the Changing of the String Length?
- AlexanderIV
- · Replies 3 ·
EMF between an axis and the surface of long wire
- PumpkinCougar95
- · Replies 7 ·
Uniform Circular Motion - distance
- AlexanderIV
- · Replies 2 ·
S.H.M of the midpoint of a guitar string
- DuoASM
- · Replies 3 ·
Mean thermal energy of a system with given potential energy
- Pushoam
- · Replies 3 ·
Beats calculation/Doppler Effect
- Dilman Sidhu
- · Replies 1 ·
Determining the equivalent resistence of a circuit
- Eman 5
- · Replies 4 ·
Calculating Free Energy in Nuclear Fuel Reactions
- jtk4012002
- · Replies 2 ·
Kinetic Friction Between Block and Surface (HW Check)
- Masrat_A
- · Replies 1 ·
How to Solve Tension Problems in Physics?
- Wanting to Learn
- · Replies 32 ·
Normalizing wavefunction Ψ = Ae^(-λ|x|)e^(-iωt)
- says
- · Replies 8 ·
Why isolate n in the x-component for finding speed on a banked turn?
- aron silvester
- · Replies 1 ·
How to calculate projectile off cliff when angle is below th
- Abcdefghijk
- · Replies 3 ·
Newton's 3rd Law Dynamics Problem
- Abu
- · Replies 12 ·
Radius of largest possible loop of an Airplane.
- HRubss
- · Replies 4 ·
A package of mass m is placed inside a drum
- Alexanddros81
- · Replies 1 ·
Oscillation of a point charge perpendicular to field lines
- CrazyNeutrino
- · Replies 3 ·
Ampere's Law and Choosing a Loop for Integration
- Marcin H
- · Replies 3 ·
Calculating Liquid Pressure: Water and Mercury
- guan721
- · Replies 1 ·
Thin film interference on water
- Taniaz
- · Replies 3 ·
Must There Be Net Zero Force and Torque on a Massless Rod?
- timetraveller123
- · Replies 16 ·
Force needed for a pushup using torque calculations
- Dave27
- · Replies 12 ·
Equivalent resistance of 2015 points
- timetraveller123
- · Replies 31 ·
Quick Significant Figures Problem
- Lori
- · Replies 2 ·
Finding the period of an object moving in horizontal circle
- fontseeker
- · Replies 3 ·
Photon Energy that can Produce an Electronic Transition
- MathIsFun
- · Replies 3 ·
Finding Minimum Force Needed to Hold Object In Place
- Oannes
- · Replies 5 ·
Right-Hand Rule: Finding Induced Direction in a One Loop Wire on the Page
- Noreturn
- · Replies 5 ·
How Do You Sketch the Correct Motion of a Parachute on a Velocity-Time Graph?
- Jimmy87
- · Replies 7 ·
How long does it take to heat a vessel?
- Modrisco89
- · Replies 41 ·
Two cars driving toward each other (non-uniform speed)
- Stormblessed
- · Replies 5 ·
Tension problem with several ropes and a mass
- Andy1234
- · Replies 7 ·
A block placed in a horizontal hollow cylinder
- SciencyBoi
- · Replies 4 ·
Conservation of Power in the armature circuit of a DC motor
- Cocoleia
- · Replies 3 ·
Question regarding phase shift between two signals
- Mohamed Abdul
- · Replies 3 ·
2D equation for projectile with linear drag force
- vsd50
- · Replies 9 ·
How do I find acceleration and tension on an inclined plane
- ivan ripalda
- · Replies 1 ·
Compressing gas in insulated cylinder with adiabatic vs isothermal processes
- fabianprewett
- · Replies 12 ·
How to calculate the efficiency of a fuel engine
- Imolopa
- · Replies 2 ·
I with finding a voltage across a Capacitor
- anonx12
- · Replies 6 ·
Converting relativistic acceleration from coordinate time to proper time
- timetraveller123
- · Replies 13 ·
Circular motion comparisons question
- jakeinater
- · Replies 1 ·
Conservation of energy -- Two charges separated by a spring
- Roxas ross
- · Replies 4 ·
Calculating Losses for a Blackbody Heater and Infrared Sensor Geometry
- Natalie Johnson
- · Replies 6 ·