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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Understanding Transitivity in Relations: Why R on A={0,1,2,3} is Not Transitive
- physicsuser
- · Replies 2 ·
Stopping a rotating disk with an axe
- jaymode
- · Replies 2 ·
Finding Sin r from 1.52 and 20 Degrees
- Novus Dakota
- · Replies 10 ·
What is the trick to solving this baffling circuit problem?
- sys.fail
- · Replies 3 ·
Calculating Velocity for Burn Patients on a Rotating Space Station
- IamatWork
- · Replies 8 ·
The Length of a Curve: Calculating Using a Non-Traditional Approach
- ProBasket
- · Replies 5 ·
Projectile motion and power problems from homework
- IamatWork
- · Replies 4 ·
Package dropped from plane at 500 m/s from 2000 m altitude
- panpanthepirate
- · Replies 5 ·
Rotating rod conservation of energy
- Spinny
- · Replies 2 ·
Integral of √(25+x²) without arcsinh
- andrew410
- · Replies 2 ·
How does the wavelength of a wave affect diffraction and why is it important?
- primarygun
- · Replies 7 ·
Kick tush magnetic field/Ampere Problem
- Elbhi
- · Replies 2 ·
Minimum position uncertainty for a 50g ball using Heisenberg principle
- jaidon
- · Replies 7 ·
Centre of Mass of a Truncated Sphere
- Offside
- · Replies 11 ·
How do I use integral notation and matrices on this site?
- binarybob0001
- · Replies 3 ·
Did I do this coversion to Standard correctly?
- trigger352
- · Replies 3 ·
Mastering Waves & Sound: 2004 AP Physics Problem Help | CollegeBoard
- hackeract
- · Replies 2 ·
Measuring Speed of Light with Glass Plate
- figs
- · Replies 4 ·
Decrease a substance's temp by stirring
- misskitty
- · Replies 9 ·
Lottery prize options: annuity vs lump sum with 7% return
- aisha
- · Replies 23 ·
Simple center of mass problem but i cant figure it out
- huk
- · Replies 2 ·
What do signs of area mean on velocity and acceleration graphs?
- bigbasherboy
- · Replies 3 ·
Orbital period and speed ratios for planet X's two satellites
- dearborne
- · Replies 2 ·
What is the wavelength of the sound wave?
- Physically Impaired
- · Replies 2 ·
Finding power factor in RL circuit with inductor and resistor
- andrew410
- · Replies 2 ·
What is the RMS Voltage Across a Body Near a Transformer?
- andrew410
- · Replies 2 ·
Energy dissipation during free fall into a viscous fluid
- joselyn
- · Replies 2 ·
Finding the coordinates of endpoints
- trigger352
- · Replies 4 ·
Local Extrema: Endpoint Included?
- blue_soda025
- · Replies 2 ·
Line loss with step-up transformer: 5 MW over 400 miles
- andrew410
- · Replies 2 ·
Finding the Mass of a Suspended Necklace Using the Center of Mass Method
- vworange
- · Replies 4 ·
Tension Calculation for Spinning Rope
- Sesj
- · Replies 4 ·
Coefficient of static friction for a backpack pulled by a spring
- stealth2k4
- · Replies 3 ·
Finding final temperature when copper is added to water
- tandoorichicken
- · Replies 2 ·
Does F=ma apply in all situations and does temperature affect mass?
- kiwikiwi79
- · Replies 1 ·
Angular Acceleration of game show wheel
- tsdemers
- · Replies 3 ·
Understanding E=mc^2: How Heat Affects Mass in Einstein's Theory of Relativity
- pinkie
- · Replies 2 ·
Weekly annuity due: why find present value instead of future value?
- aisha
- · Replies 8 ·
QUICKIE FV or PV? FUTURE OR PRESENT
- aisha
- · Replies 4 ·
Are These Astrophysics Calculations Correct?
- Rob Hal
- · Replies 2 ·
What Is the Acceleration of a Rolling Sphere Down an Inclined Plane?
- UrbanXrisis
- · Replies 2 ·
Solving a Resistance Question Problem: Nichrome Heating Element
- ToxicBug
- · Replies 2 ·
A ball thrown over a house(Projectile Motion)
- cde42003
- · Replies 4 ·
Solving for k in e^10k = 0.75
- ziddy83
- · Replies 2 ·
Calculating Velocity to Match Earth's Gravity on a 200m Circle
- LHS Students
- · Replies 4 ·
Find the length of the Transverse axis. What did I do wrong?
- trigger352
- · Replies 2 ·
Solving Review Problem on Dance Floor
- Maximus24
- · Replies 2 ·
Voltage from three charges on y-axis using binomial expansion
- rei
- · Replies 2 ·
Opthalmoscope - retinal image formation
- StonieJ
- · Replies 2 ·
The Integration problem that's still giving me a headache (a week later)
- Sombra
- · Replies 2 ·
What Values of x Make Matrix B Singular?
- carltonblues
- · Replies 5 ·
Dehumidifying a Room: Solve the Physics Problem
- gday56
- · Replies 5 ·
Electriccal charges and vectors
- Rave Grrl
- · Replies 3 ·
Solving air resistance differential equation d²s/dt² + R ds/dt = g
- $id
- · Replies 11 ·
How Do You Calculate Slit Width Using Wavelength and Diffraction Angle?
- airkapp
- · Replies 5 ·
Largest distance for destructive interference from two speakers
- Rachel C
- · Replies 2 ·
What Is the Initial Velocity Formula for Projectile Motion in Game Development?
- bmf59
- · Replies 2 ·
Can alternating series be grouped as geometric series for convergence?
- kdinser
- · Replies 4 ·
Monkey Climbing Rope: Finding the Torque and Angular Momentum
- UrbanXrisis
- · Replies 10 ·
Maximum instantaneous power and current for a 3.0-hp pump at 240 V
- Soaring Crane
- · Replies 2 ·
Work needed to remove Keel-Aid from water
- ProBasket
- · Replies 4 ·
Calculating Coefficient of Kinetic Friction for Inclined Plane Problem
- SanityMan
- · Replies 2 ·
What are some types of electromagnetic forces?
- jen333
- · Replies 3 ·
How Do You Express a P-State Lightwave Propagating at an Angle in the XY-Plane?
- paul11273
- · Replies 2 ·
Calculating Forces and Work on a Sliding Piano
- VoxFox
- · Replies 2 ·
Calculating Angular Width of Central Maximum in Wave Diffraction
- Physicsisfun2005
- · Replies 2 ·
How Do You Solve a Nonhomogeneous Second-Order Differential Equation?
- Stu165
- · Replies 2 ·
Finding the inverse of y=sqrt(x³+x²+x+1)
- yoyo
- · Replies 2 ·
Work done stretching a spring 13 cm—how to find the spring constant?
- ProBasket
- · Replies 6 ·
Is F = m × a when mass is in Newtons?
- mushhhy
- · Replies 3 ·
Injecting a particle in space (question, not math)
- Jacob87411
- · Replies 2 ·
A Complex Three Loop Circuit with Resistors and two batterys only.
- zeronem
- · Replies 3 ·
Prove that closed balls scale and translate in inner product spaces
- Oxymoron
- · Replies 21 ·
Heat of Formation Propanol: ΔHf°
- a_ng116
- · Replies 3 ·
Calculating Distance Deflected by Earth's Magnetic Field for 3.4g Bullet
- TickleMeElma
- · Replies 2 ·
How to Create an Amortization Table for a Mortgage Loan with Blended Payments
- aisha
- · Replies 8 ·
What is the limit of (2/3)^n as x approaches infinity?
- gillgill
- · Replies 12 ·
Solving 5(2)^t=5000 with TI calculator graphing
- mathzeroh
- · Replies 4 ·
Evaluating the integral of 1/|r1-r2| over two spheres in spherical coordinates
- vincentchan
- · Replies 7 ·
Exponential growth/decay question
- mathzeroh
- · Replies 10 ·
Solve Diophantine Equation using Continued Fractions
- Zurtex
- · Replies 3 ·
Equation of a Circle Passing Through Given Points
- furtivefelon
- · Replies 5 ·
Electrostatics surface charge Problems
- AKG
- · Replies 8 ·
Determining restrictions on an ellipse
- trigger352
- · Replies 2 ·
What is Billie's speed after pushing off Joannie in the parking lot?~~
- jatwood1977
- · Replies 2 ·
Resistance + Mechanics problems
- thermodynamicaldude
- · Replies 2 ·
Finding the Sum of an Alternating Series
- shan
- · Replies 15 ·
Solving Kepler's 3rd Law with 4π²/G
- tony873004
- · Replies 10 ·
Fictituous forces and apparent weight
- mugzieee
- · Replies 2 ·
Find the time required to to cover the length of the tunnel.
- npgreat
- · Replies 2 ·
Converting from General to Standard
- trigger352
- · Replies 5 ·
Speed difference between top and bottom of equatorial tower
- mugzieee
- · Replies 4 ·
Converting angle in degrees to revolutions per minute
- mugzieee
- · Replies 6 ·
TheoMech - rolling a ball down a curve
- K.J.Healey
- · Replies 2 ·
What Happens to Surface Charges When a Grounded Wire Connects to a Metal Shell?
- Pietjuh
- · Replies 3 ·
Time Dependent Torque/Merry Go Round
- twiztidmxcn
- · Replies 2 ·
B inside a cylinder of radius R
- Murr14
- · Replies 4 ·
What is the relationship between radius and period for centripetal acceleration?
- harhar
- · Replies 6 ·
B-field produced by a spiral coil
- gd
- · Replies 22 ·