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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Physics discoveries and events from 2005
- adver
- · Replies 1 ·
How Many Moles of Ions Are in These Aqueous Solutions?
- courtrigrad
- · Replies 6 ·
Why Does Implicit Differentiation Give Contradictory Results for u_z?
- Icebreaker
- · Replies 1 ·
Solve Time Delay Equations: Derive (6) and (7) from Mackey-Glass
- bor0000
- · Replies 4 ·
Calculating Outward Normal Vector on Frictionless Ramp Inclined θ Degrees
- amcavoy
- · Replies 2 ·
How to Find Limits Without Using L'Hopital's Rule?
- vbplaya
- · Replies 8 ·
Speed of Electron in Two-Charge System
- Tcat
- · Replies 1 ·
Determine maximum value of this solution for t>0
- NINHARDCOREFAN
- · Replies 1 ·
Groups containing no proper subgroup
- hgj
- · Replies 6 ·
What Are Limits and Derivatives and How Do You Solve Them?
- MercuryRising
- · Replies 8 ·
Proofs with propositional logic formulas
- _E_
- · Replies 10 ·
Boundary conditions for charged cylinder
- bigplanet401
- · Replies 1 ·
Linked list with random numbers, counting occurrences and removing duplicates
- heavyc
- · Replies 1 ·
Electric flux and enclosed charge in a cube with non-uniform field
- stunner5000pt
- · Replies 5 ·
Third Taylor polynomial for √(x+1) and error at x=0.5
- stunner5000pt
- · Replies 3 ·
How Is the Centripetal Acceleration Formula Derived?
- amcavoy
- · Replies 1 ·
How do you calculate the area of a parallelogram using a determinant matrix?
- niteshadw
- · Replies 3 ·
Geiger Counter and Potential Difference
- LostinPhysics
- · Replies 1 ·
Some problems no clue what to do
- kevinlikesphysics
- · Replies 13 ·
Matrices trouble, making a,b,c no sol, a unique, and infin solutions
- mr_coffee
- · Replies 1 ·
Constant acceleration (rotation)
- wisdominican
- · Replies 1 ·
Conservation of momentum in two dimensions?
- twofish
- · Replies 3 ·
What is the Derivative of a Trigonometric Function?
- Aresius
- · Replies 14 ·
Mortgage borrowing with continuous compounding and payments
- amcavoy
- · Replies 3 ·
DIFFEQ - Method of Undetermined Coefficients
- FrogPad
- · Replies 6 ·
What is the electric potential at the sphere's surface? having troubles
- mr_coffee
- · Replies 5 ·
From limit to an infinate series.
- possum
- · Replies 3 ·
Why Does an Object Travel in an Elliptical Orbit Due to Gravitational Force?
- xailer
- · Replies 2 ·
Constant of gravitation-what is that?
- xailer
- · Replies 12 ·
Can someone check my answers on these kinematics questions?
- dnt
- · Replies 4 ·
Induced EMF in a Wooden Ring with Time Varying Magnetic Field
- gaganpreetsingh
- · Replies 4 ·
Understanding Cylindrical Vector Fields: Can They Be Electrostatic?
- taishar
- · Replies 3 ·
Q3Ball Trajectory Calculations and Analysis
- ouse
- · Replies 15 ·
Tension and acceleration in pulley and rope systems
- Atomos
- · Replies 6 ·
Minimizing Total Area: Optimal Dimensions for Triangles and Squares
- mattxr250
- · Replies 11 ·
Calculating Percentage Error: What to Do and How to Do It
- Kandy
- · Replies 2 ·
General solution for given y'(x) = 2/(7-4y)
- seen
- · Replies 2 ·
Projectile motion on an incline
- sigma
- · Replies 2 ·
When does a car accelerating from rest pass a truck at constant velocity?
- Washable_Marker
- · Replies 4 ·
Proving That a Group of Order 5 is Abelian
- murshid_islam
- · Replies 8 ·
Equation for vertical spring motion with given equilibrium conditions
- frozen7
- · Replies 9 ·
Classifcation of irreducible polynomials
- gazzo
- · Replies 1 ·
Integral of cos(Ax)e^(-Bx²) from 0 to infinity
- quasar987
- · Replies 6 ·
Help with Golf Ball Question: Initial Velocity & Angle
- Vivek
- · Replies 2 ·
Solving the Puzzle: Acceleration of a 50kg Block
- phizuks
- · Replies 2 ·
Solving for Relative Velocity: Helicopter and Ejected Package Collision
- mcjohnst
- · Replies 2 ·
Solving Trig Equations: (1.84, 5.06)?
- SS2006
- · Replies 1 ·
Trolley pushed by compressed spring on frictionless track
- charikaar
- · Replies 5 ·
Calculating electron charge from Milliken oil drop data
- shikagami
- · Replies 1 ·
Calculate Charge on Electron from Milliken Oil Drop Data
- shikagami
- · Replies 1 ·
What Mistakes Are in the Elevator Problem Calculation?
- jtm
- · Replies 1 ·
How Far Does a Projectile Travel When Fired from a Cliff?
- roe
- · Replies 4 ·
How Do You Integrate sin^6(x) Using Trigonometric Identities?
- Stevecgz
- · Replies 4 ·
Solving Max of x^2+y^2 w/ Lagrange Multipliers
- thenewbosco
- · Replies 5 ·
N's 2nd law: an eq'n for acceleration 'a'
- ms. confused
- · Replies 1 ·
What Is the Stopping Distance of a Car Given Mass, Speed, and Friction?
- jtm
- · Replies 5 ·
Evaluate the following integral
- quasar987
- · Replies 10 ·
Integration of 1/(x^2+4)^2 with trigonometric substitution
- badtwistoffate
- · Replies 2 ·
How Do You Calculate Mass Flow Rate on an Inclined Plane?
- n05tr4d4177u5
- · Replies 1 ·
Car driven 150 km west then 30 km southwest
- confusedaboutphysics
- · Replies 6 ·
Proof of the equality of men through induction.
- Physicist7
- · Replies 5 ·
Proving the Laplace Operator in Polar Coordinates
- thenewbosco
- · Replies 6 ·
What is the Resultant Force on a Car with Two Differently Angled Forces?
- mike98020205
- · Replies 1 ·
Projectile motion golf ball question
- 11thgradephysics
- · Replies 3 ·
Trouble Solving an Integral: 2tan(u) Substitution
- badtwistoffate
- · Replies 3 ·
How to start a projectile motion problem
- SS2006
- · Replies 1 ·
Determining the Graph, Domain, and Range of ln(arctan(x))
- dekoi
- · Replies 3 ·
Ok, a little shoe experiment
- Winner
- · Replies 15 ·
What Determines the Characteristics and Dynamics of a Wave?
- hotmail590
- · Replies 3 ·
Can You Solve These Physics Problems Before My Test?
- ouse
- · Replies 12 ·
What are some hints for solving Geometrical Optics problems?
- Perses
- · Replies 2 ·
How to convert km/h to m/s squared
- mike98020205
- · Replies 2 ·
What is the tension in the rope at this point?
- bcarter
- · Replies 1 ·
How Do You Calculate Initial Speed in Projectile Motion Problems?
- heeling23
- · Replies 1 ·
Time for freight train to accelerate from rest to 85 km/h
- mike98020205
- · Replies 7 ·
A function f[x] and a point x=a. If f'[a]>0, is it possible f[a]<=f[x]
- CAG
- · Replies 3 ·
2 Problems: 1 friction 1 uniform acceleration
- Weather Freak
- · Replies 2 ·
What Are the Physical and Chemical Changes in the Iron and Sulfur Experiment?
- jennifer.
- · Replies 1 ·
Does an object with velocity expression stop as time approaches infinity?
- ytsejam
- · Replies 6 ·
How Far Does the Shell Land Beyond the Cliff Edge?
- ledhead86
- · Replies 3 ·
Get me going in the right direction on this and I'll give you a hug
- schattenjaeger
- · Replies 3 ·
Proving System Decay Time: A Detailed Explanation
- SteveDB
- · Replies 2 ·
[DiffEq] First order Modeling Applications
- metiscus
- · Replies 1 ·
How Do You Determine Linear and Non-Linear Graphs from Graphical Linearization?
- scorpa
- · Replies 4 ·
Solve Velocity Problem: Boat w/ 2 Boys Jumping
- alex engler
- · Replies 3 ·
A question and no idea what to do
- ouse
- · Replies 13 ·
Proof of Tan (theta) = 1 + (2M / m)
- daniel123
- · Replies 5 ·
I don't understand the rank of a matrix
- mr_coffee
- · Replies 4 ·
Proving Suprema Product Property for Bounded Sets A and B
- Icebreaker
- · Replies 1 ·
If a gas is at STP, is atm pressure 1?
- tomrh3
- · Replies 1 ·
What Is the Second Solution to the Given Differential Equation?
- schattenjaeger
- · Replies 7 ·
Why divide by 2 when finding probability of exactly 2 values on 5 dice
- rad0786
- · Replies 1 ·
Electric Potenital engery trouble
- mr_coffee
- · Replies 5 ·
Magnetic Force: Halving the Distance
- mystry4
- · Replies 1 ·
Solving Friction Problems: Why Only Static Friction Applies?
- grief
- · Replies 5 ·
What is the work done on the block by the worker and weight forces?
- ViewtifulBeau
- · Replies 2 ·
How to determine if basic trigonometric functions are continuous
- vitaly
- · Replies 1 ·
Finding net electric potential, i got it set up right, but somthing is f'ed up
- mr_coffee
- · Replies 1 ·
Domain of f(x) from -9 to 10 - Pre-calc Function
- litz
- · Replies 1 ·