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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How Do You Calculate Molar Masses from Diffusion Rates and Density?
- Canuck156
- · Replies 3 ·
Work and acceleration of rescue team
- ViewtifulBeau
- · Replies 5 ·
What is the Simplified Expression for 6n^5+15n^4+10n^3-n?
- rover
- · Replies 8 ·
Understanding Bounded Intervals to Suprema and Infima
- Icebreaker
- · Replies 1 ·
Mastering Rational Expressions: Simple Tips and Tricks for Advanced Math Classes
- mlbmaniaco
- · Replies 14 ·
Finding Multiplicative Inverse of 23 in Z_31
- Benny
- · Replies 5 ·
Simple Mechanics confusing me:S
- brandon26
- · Replies 4 ·
Where does the crate permanently come to rest?
- Doppler
- · Replies 3 ·
Lorentz transform for acceleration
- mntb
- · Replies 1 ·
What is the Limit of 1/x sin(1/x) as x Approaches 0+?
- mr_coffee
- · Replies 13 ·
How Do I Solve These Complex Newton's Laws Problems?
- chipsdeluxe
- · Replies 3 ·
Collision between a steel plate and meterstick in frame S?
- mntb
- · Replies 2 ·
How Can We Prove that a Curve with Perpendicular Derivative Lies on a Sphere?
- sharpstones
- · Replies 2 ·
Time Dilation: Showing Relation b/w Intervals
- mntb
- · Replies 1 ·
Ideas as to how I should start to integrate this one?
- LocationX
- · Replies 4 ·
Solving Ball Hitting Ramp Physics Problem
- DrKn
- · Replies 2 ·
Where Do I Start with First-Order Linear ODEs?
- decemberdays86
- · Replies 8 ·
Find the number of diagonals that can be drawn in an n-side polygon
- fork
- · Replies 3 ·
Length of Curve (Calc 2) question
- twiztidmxcn
- · Replies 2 ·
Trigonometric Identities: Simplifying and Proving
- brandon26
- · Replies 2 ·
Is the Secant Method's Convergence to -1 Provable?
- pinodk
- · Replies 1 ·
Solving ODE: Integrating Factor for Problem 4d
- roryhand
- · Replies 2 ·
What Happens to ln[(x+2)/(x-1)] as x Approaches -2 from the Left?
- gillgill
- · Replies 3 ·
Horizontal force kinematics help
- frozen7
- · Replies 9 ·
Why does the slope of a graph representing Ohm's Law equal the resistance value?
- jsalazar
- · Replies 2 ·
Capacitance Across Not-So-Parallel Plates
- ^eMpTy^
- · Replies 2 ·
Did I accurately determine the forces on the stick figure athlete?
- NotaPhysicsMan
- · Replies 6 ·
How Far Will a Box Slide with a Coefficient of Kinetic Friction of 0.23?
- jshaner858
- · Replies 9 ·
Is There a Difference Between Sin and Cos in Traveling Wave Equations?
- hotmail590
- · Replies 3 ·
What Are the Electric Field Components at the Center of a Charged Square?
- mousesgr
- · Replies 1 ·
Electric Field Projectile Motion
- physicsss
- · Replies 2 ·
Power and focal length of human eye
- 123Sub-Zero
- · Replies 1 ·
Why Does the Cardboard Stick to the Inverted Water-Filled Cup?
- [AFT]
- · Replies 1 ·
Quantum Question and Binding Energy Question
- vg19
- · Replies 3 ·
Evaluating Tricky Integral: \int \sqrt{1+4\cos^2 2x}
- FluxCapacitator
- · Replies 14 ·
Finding Roots and Continuity of Functions
- dekoi
- · Replies 4 ·
How to prove stuff about linear algebra?
- *melinda*
- · Replies 3 ·
Step PN Junction - Energy Band Diagram
- metroplex
- · Replies 1 ·
Solve Integral Problem: Step by Step Guide
- Azael
- · Replies 2 ·
Derivating a from v (lorentz transform)
- mntb
- · Replies 1 ·
Need help with satellites and Kepler's Laws
- fiestytig
- · Replies 6 ·
A Couple of Conceptual Questions Need help
- Karma
- · Replies 3 ·
Finding the Value of C and Solving for Roots in a Quadratic Equation
- discombobulated
- · Replies 2 ·
The Work - Energy Theorem in a pulley?
- erik-the-red
- · Replies 1 ·
Graph the weight gain and loss during the pregnancy
- gillgill
- · Replies 3 ·
Some questions about math factor proves
- furtivefelon
- · Replies 2 ·
Can Varying Concentration, Surface Area, and Temperature Prevent a Reaction?
- Intr3pid
- · Replies 1 ·
Help Solving SHC & SLH Question w/ Ice Mass 2.0kg & 200w Heater
- omarshaffi
- · Replies 1 ·
Help with Physics Problems: Elevator Acceleration & Gravity
- chipsdeluxe
- · Replies 1 ·
Projectile Motion Problem. Very HARD
- M1st3rmarbl3s
- · Replies 5 ·
Time dilation(correct/not correct)
- mntb
- · Replies 1 ·
Solving √ x + 4/3 y with p = 3.4 e3 Kg m-³
- stepha
- · Replies 3 ·
Problem : Metrics and Induced Topologies
- AKG
- · Replies 2 ·
Solving Natural Log: Round and Round I Go...
- member38644
- · Replies 2 ·
Vector V1 and V2 Components: Solving for x and y | Help with Vector Problem
- confusedaboutphysics
- · Replies 2 ·
How High Was the Elevator When the Nut Fell?
- SS2006
- · Replies 5 ·
Is f(x) = 2x Onto, One-to-One, or a Bijection for Different Domains?
- raross
- · Replies 4 ·
Plotting Graph & Writing Equation: Force vs Acceleration
- Kandy
- · Replies 12 ·
Find the Integral of (-39240)(9-x^2)^(1/2) with Easy Step-by-Step Guide
- n05tr4d4177u5
- · Replies 2 ·
What factors affect the calculation of the third cosmic velocity?
- sapta
- · Replies 6 ·
Help with Thermodynamics Problem: Proving Energy & Calculating Heat Input
- Perses
- · Replies 4 ·
Calculating Angle Ratios in Electrostatic Systems
- physicsss
- · Replies 5 ·
10 men to build 120 houses in 60 hrs
- latyph
- · Replies 1 ·
Estimating & Calculating Leaf Temperature in Sunlight
- frozen7
- · Replies 13 ·
Solving Vector Calculus Problems in r1(t) and r2(t)
- Electro
- · Replies 2 ·
Derive u from v with Lorentz Transform
- mntb
- · Replies 1 ·
Why Did I Calculate the Cliff's Height Incorrectly?
- confusedaboutphysics
- · Replies 2 ·
Rearrange the Projectile Motion equation
- mlbmaniaco
- · Replies 2 ·
How to write this logarithmic equation as a power
- brandon26
- · Replies 7 ·
How Do I Use Taylor Polynomials for Approximation and Error Estimation?
- Benny
- · Replies 1 ·
What is the derivative of x.(rootx) from first principles
- NewScientist
- · Replies 9 ·
Confirm Calculation of Bullet Velocity to Hit Skeet
- AaronL
- · Replies 4 ·
Calculating Velocity of Water Stream for Archer Fish Target Practice
- Janani
- · Replies 1 ·
Optimizing Center of Gravity for Inclined Driving: Solving a Friction Problem
- SheldonG
- · Replies 10 ·
Electromag Potential difference
- lektor
- · Replies 6 ·
Why is ~(P v Q) equivalent to (~P & ~Q)?
- Coldie
- · Replies 3 ·
What is the maximum upward acceleration of the ball?
- Effitol840
- · Replies 2 ·
Elevator falls when I am inside
- djeipa
- · Replies 10 ·
I am stuck with vector problems
- Katrina
- · Replies 7 ·
High-Altitude Research Balloon Design: Questions Answered
- physicsCU
- · Replies 1 ·
Should be easy but I'm so confused (Kinetic Friction)
- confusedbyphysics
- · Replies 8 ·
Angular Separation Between Two Stars
- ps2983
- · Replies 1 ·
Understanding Absolute Values: Tips and Tricks to Mastering the Concept
- JasonRox
- · Replies 3 ·
Solving Bernoulli Equation - Can't Get Correct Answer
- amcavoy
- · Replies 3 ·
How can I rearrange the Projectile Motion equation to solve for t?
- mlbmaniaco
- · Replies 4 ·
Lagrange and Hamiltonian question
- yukcream
- · Replies 6 ·
Is Hydrogen a Metal or Nonmetal?
- tin llenaresas
- · Replies 3 ·
A hand on this one will be great i=1/L∫Vdt|| V=(6t+26)/(t^2+10t+21).
- cunhasb
- · Replies 2 ·
How to Find Potential Difference on a Conical Surface with Uniform Charge?
- bigplanet401
- · Replies 1 ·
To what depth does the bullet penetrate the block in this case?
- Pseudo Statistic
- · Replies 4 ·
Tension and centripital motion help
- erogers4
- · Replies 7 ·
Pixel Density & Component Accuracy: Does Width Matter?
- royshh
- · Replies 1 ·
Reduced a big matrix, now the parametric form is not right, :\
- mr_coffee
- · Replies 7 ·
Dot product, i don't see what they want from me
- mr_coffee
- · Replies 5 ·
How Do You Calculate the Separation Between Two Charged Balls in Equilibrium?
- Rashedbhai007
- · Replies 2 ·
Kirchhoff's Voltage Law in a Battery
- jena
- · Replies 9 ·
Finding a and b to satisfy somthing, matrices problem
- mr_coffee
- · Replies 1 ·
How Do You Calculate Gravitational Forces and Friction in Physics Problems?
- Morokana
- · Replies 3 ·
How Do You Solve These Two Uniform Motion Problems?
- DB
- · Replies 3 ·
Creating Objects with Conservation of Energy: A SciFi Short Story
- Yossarian Lives
- · Replies 7 ·