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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Identifying the Valence of Common Elements
- LakeMountD
- · Replies 2 ·
Calculating the Apparent Angle of the Moon's Diameter from Earth
- onetroubledguy
- · Replies 7 ·
What Does the Graph of y=(x+1)/(x-1) Look Like?
- brandon26
- · Replies 5 ·
What is the fraction of the total power wasted in the leads?
- Link
- · Replies 2 ·
How Does Fertilizer Affect Plant Growth in Controlled Experiments?
- sora4ever1
- · Replies 1 ·
Show the commutative property with dot product
- mr_coffee
- · Replies 5 ·
Finding the coordinates and distance of this drawing
- mr_coffee
- · Replies 4 ·
Verify Divergence Theorem for Q with G(x,y,z) in $\Re^3$
- Tony11235
- · Replies 6 ·
Find Charge on Ball in Electric Field: Solve Problem
- U154756
- · Replies 2 ·
How Do You Find a Plane Orthogonal to a Given Line?
- Whatupdoc
- · Replies 3 ·
Understanding Trig Functions: Solving for Sin and Cos in Radian Measure
- erok81
- · Replies 5 ·
Find the sum of the vectors u and v if theta is the angle between them
- DevilTemptations
- · Replies 3 ·
Verifying Arc Length of Vector: <2e^t, e^-t, 2t>
- Giuseppe
- · Replies 1 ·
What is the Energy Transfer in a Copper-Water System?
- love_joyously
- · Replies 2 ·
Calculating Acceleration and Displacement in 1D Motion
- SarahV
- · Replies 4 ·
Finding where a line intersects the coordinate planes
- Whatupdoc
- · Replies 3 ·
Maximum height reached by package dropped from ascending helicopter
- Lucretius
- · Replies 6 ·
Showing Symmetry in Real Invertible Matrices and Non-Invertible Cases
- Benny
- · Replies 5 ·
Complex analysis- Oscillation/vibration class
- SteveDB
- · Replies 5 ·
Jill's Sprint After Shopping Cart: Physics Kinematics
- oldunion
- · Replies 3 ·
Fermi Style Estimation Question
- Spitfire-Adam
- · Replies 8 ·
Factoring a(b⁴−c⁴)+b(a⁴−c⁴)+c(a⁴−b⁴)
- mlowery
- · Replies 2 ·
Two objects travelling on a parallel plane
- AaronL
- · Replies 13 ·
How to approach the two trains and bird problem
- xxQueenie47xx
- · Replies 12 ·
Calculate Resultant Force on Positive Charge in Rectangle with 4 Charges
- confused1
- · Replies 1 ·
How heavy would you be on neuron star
- Neutrino00
- · Replies 1 ·
How Does Mercury Affect the Air Column Length in a Sealed Cylinder?
- shaiqbashir
- · Replies 7 ·
Unit Conversion ad Significant Figures
- Soaring Crane
- · Replies 1 ·
E-K Diagrams, valence band, conduction band
- metroplex
- · Replies 14 ·
Acceleration (short question, but not so simple)
- Erik_at_DTU
- · Replies 12 ·
What is the angle of a circle with radius 5 metres?
- golith
- · Replies 12 ·
Prove the Square Root of 2 is irrational
- njkid
- · Replies 4 ·
Endomorphism Ring: Proving f(R) = E
- Pietjuh
- · Replies 1 ·
Calculating Resultant Force Vectors in a 2D System
- ranger
- · Replies 5 ·
Thermodynamics question i dont get
- ice87
- · Replies 3 ·
How Can You Calculate Daily Water Loss in a Heated Indoor Spa?
- Dan Shenk
- · Replies 1 ·
Product Notation: Expressing Prod_{n=1}^k a_i
- 1+1=1
- · Replies 2 ·
Griffitsh electrostatics problem
- Brad Barker
- · Replies 13 ·
Proving Euler's formula using the exponential series
- teclo
- · Replies 5 ·
Proof by Induction: Understanding D/dx Formula
- sony
- · Replies 4 ·
How Do Earth's Poles Affect Electron and Proton Distribution Forces?
- gmuniz
- · Replies 2 ·
How Do You Solve the Differential Equation for Particle Motion with F=kvx?
- infraray
- · Replies 4 ·
Oscillations of a Piston in a cylinder containing a trapped gas
- Varak
- · Replies 1 ·
My son is having difficulty with a problem.
- Thermal
- · Replies 4 ·
Organic Chemistry: PhenylEthene Solidifies when Exposed to Air
- Oerg
- · Replies 3 ·
Proof of Uncountable Domain for f:A-->B
- happyg1
- · Replies 9 ·
Proving Divisibility by 3 for $\mathbb{Z}^{+}$ Sets
- bomba923
- · Replies 5 ·
Solving Relative Position Problem: Velocity of Boat w.r.t Water
- brad sue
- · Replies 1 ·
Adiabatic expansion of ideal gas from 500K to 6.5x volume
- physicsss
- · Replies 3 ·
What would be the energy eigenvalues of this particle?
- FUNKER
- · Replies 2 ·
How do mass and density relate in iron blocks when volume changes?
- jaan
- · Replies 3 ·
Simple Elevator Ball Physics Problem
- Grandmas
- · Replies 2 ·
Conservation of Energy: Proving the Relation ((mdx^2)/(dt^2))=F(x)
- belleamie
- · Replies 1 ·
Cab accelerating and decelerating over 2 km distance
- dparent
- · Replies 9 ·
Work-Energy Theorem: Find Final Speed of Ship
- PhysicsDud
- · Replies 3 ·
Three daughters with ages that multiply to 72
- njkid
- · Replies 7 ·
Determine the empirical formula of the compound
- Atomos
- · Replies 2 ·
Maximum velocity direction in spring oscillation with x(t) = A cos(ωt + φ)
- insertnamehere
- · Replies 1 ·
Just want to understant(Diff EQ)
- karen03grae
- · Replies 4 ·
Totally Lost (Free Fall Distance)
- physicsvirgin
- · Replies 2 ·
Understanding Conventional vs Electron Flow in Node Voltage Analysis
- LocationX
- · Replies 7 ·
Using logarithms to solve y=kx^n for the exponent
- DB
- · Replies 14 ·
Finding vector magnitude and point coordinates from diagram
- mr_coffee
- · Replies 1 ·
Finding the maximum of V(a,R) = -(qp/R) - [qt/(R-a)]
- the-rocketman
- · Replies 6 ·
Trouble with Two Physics Problems: Speed of Sound and Acceleration
- cscott
- · Replies 5 ·
Resolution of Components Problem
- caddyguy109
- · Replies 15 ·
Points of maximum curvature on y=e^x and xy=1
- Giuseppe
- · Replies 2 ·
Work done on a bubble and power of heart pumping
- mprm86
- · Replies 1 ·
How Do Physics Formulas Apply to Airplane Acceleration and Projectile Motion?
- shortie
- · Replies 1 ·
Simplifying Surds: Adding and Subtracting
- V-Tec
- · Replies 1 ·
How is making ice cream similar to evolution?
- maxpayne_lhp
- · Replies 1 ·
Questions concerning cross products, dot products, and polar coordinates
- don_anon25
- · Replies 1 ·
Car rolling off cliff and rocket projectile motion problems
- kbbate9850
- · Replies 2 ·
[calculus] Continuity of partial derivatives
- Ahmes
- · Replies 3 ·
How Much Does a Plumb Bob Deviate at 40 Degrees North Latitude?
- tubworld
- · Replies 3 ·
Does M/2 satisfy probability measure axioms, and counterexample for M^2?
- Alexsandro
- · Replies 4 ·
Determine the power per unit area arriving at the Earth
- physicsss
- · Replies 4 ·
Integrating Trig: Solving Definite Integrals with Sin and Cos
- MathGnome
- · Replies 3 ·
2 Problems regarding Gauss's Law
- echau
- · Replies 6 ·
Combining Probability Measures: A Concrete Illustration and Proof"
- Alexsandro
- · Replies 4 ·
Solve Seebeck Voltage Conversion to Temperature Issues in Colorado
- physicsCU
- · Replies 9 ·
Prerequisites for studying Peskin and Schroeder
- Neitrino
- · Replies 4 ·
Commutator [H_D,L_k] for the Dirac Hamiltonian
- Spinny
- · Replies 5 ·
How do I Calculate Derived Dimensions from Fundamental Units?
- Noxman
- · Replies 5 ·
How Does Causality Emerge in Quantum Field Theory Expressions?
- Neitrino
- · Replies 2 ·
Proving the Intersection of Subspaces is a Subspace: A Vector Space Proof
- Benny
- · Replies 4 ·
Discover the First 10 Terms of 3 Different Sequences | Easy Sequence Question
- Whatupdoc
- · Replies 1 ·
Multiplying algebraic fractions with 6x^2+5x-6
- aricho
- · Replies 11 ·
How do rationalise {(plusminus)2(sqrt)2/(sqrt)3}
- aricho
- · Replies 8 ·
Surface area of a sphere problem
- devildog6289
- · Replies 3 ·
What is the indefinate integral
- sora4ever1
- · Replies 5 ·
What is the electric field above a uniformly charged cylinder?
- matpo39
- · Replies 4 ·
Simple harmonic movement problem
- Cyannaca
- · Replies 5 ·
Calculating Velocity in Free Fall from a Given Height
- kevinlikesphysics
- · Replies 2 ·
Find the thickness of Aluminium Foil
- Turvey
- · Replies 6 ·
Physics multiple choice: acceleration, velocity, and inertia
- allstar1
- · Replies 8 ·
How Do You Calculate Friction and Normal Force on an Incline?
- Naeem
- · Replies 8 ·
Fun hw question I can't seem to get
- rocketboy
- · Replies 1 ·
Average acceleration of tennis ball bouncing off wall
- febreze
- · Replies 1 ·