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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What is the Net Force on a Helium Nucleus Due to Proton and Electron Charges?
- Whatupdoc
- · Replies 3 ·
Help with depreciation, asymptotes, normal lines, and average rate of change
- jai6638
- · Replies 35 ·
Is It Beneficial to Take Geometry and Algebra 2 Simultaneously?
- njkid
- · Replies 6 ·
Solving the differential equation d(xy)/dx = a^xy
- Rosnet
- · Replies 9 ·
What Determines Rebound Height in a Physics Lab Experiment?
- ludi_srbin
- · Replies 3 ·
Finding the magnitude of vectors in statics problems
- mrpburke
- · Replies 20 ·
Calculating Electric Field Between Charged Particles
- jena
- · Replies 3 ·
How to Determine Final Temperature and Enthalpy Change During Vaporization?
- physicsCU
- · Replies 3 ·
Finding impact speeds when two trains collide while braking
- hb1
- · Replies 2 ·
Volume of solid when rotating about x=2
- ~angel~
- · Replies 12 ·
Simple Harmonic Motion-Finding the distance traveled by the vibrating object?
- insertnamehere
- · Replies 3 ·
Electrons transferred when perspex rod rubbed with silk
- TheoehT
- · Replies 2 ·
Can You Solve This Challenging IITJEE Physics Problem in Under 30 Minutes?
- Nirav Chavda
- · Replies 2 ·
How Far Does the Bird Travel Between Two Trains?
- ViewtifulBeau
- · Replies 5 ·
Very basic physics (mechanics) question
- itzela
- · Replies 3 ·
Can Geometrical Optics Queries Be Shared More Effectively Than in ZIP Files?
- Sanosuke Sagara
- · Replies 1 ·
Calculus Limits: Verifying the Solution for (x+∆x)^2 - x^2 / x
- kendal12
- · Replies 3 ·
Is the Radius of Curvature of a Concave Mirror Always Positive?
- Sanosuke Sagara
- · Replies 1 ·
Can the Free Particle Wave Equation Be Solved for Periodic Boundary Conditions?
- sniffer
- · Replies 1 ·
Antelope with constant acceleration: finding initial speed and acceleration
- NutriGrainKiller
- · Replies 3 ·
Can You Find an Irrational Number Between Two Rational Fractions?
- sitedesigner
- · Replies 3 ·
What is the pressure inside a submerged tube?
- mrjeffy321
- · Replies 2 ·
Force needed to lift a crate and force to lift a book
- brandon1
- · Replies 13 ·
Can the logarithm of a prime number be rational?
- mattmns
- · Replies 4 ·
Total mechanical energy of a system
- erinbrattin
- · Replies 3 ·
Proton Vertical Displacement in Electric Field
- srhly
- · Replies 2 ·
Where Can I Find a Free Download of QuickBASIC 4.5?
- mewhoexactlywhat
- · Replies 5 ·
Separation Vector: Showing $\nabla(\frac{1}{||\vec{r}||})$
- Yeldar
- · Replies 3 ·
Stargate Atlantis/ pressure and fluids
- chris_p_2005
- · Replies 12 ·
Help with physics assignment due in an hour
- erinbrattin
- · Replies 1 ·
Converting 249 degrees to radians
- tenchick19
- · Replies 9 ·
Proving Convergence of an Infinite Series
- broegger
- · Replies 10 ·
Write f as piecewise defined function
- ludi_srbin
- · Replies 10 ·
Dimensional analysis universal gravitation
- suetonius
- · Replies 4 ·
What is the ratio V2/V1 of the volumes?
- tenchick19
- · Replies 1 ·
What is the Torque on a Hinged Door with a 30 N Force at 1.5 m Distance?
- erinbrattin
- · Replies 2 ·
Velocity of 50g Putty+50g Mass After Collision
- erinbrattin
- · Replies 2 ·
Feather drop on moon, bike acceleration, and horse gallop problems
- 4everYOURS
- · Replies 2 ·
Calculating 7^402 mod 1000 with Euler's Theorem
- pivoxa15
- · Replies 5 ·
Why is the Region of Convergence Important?
- EvLer
- · Replies 2 ·
Finding Height of Mountain Using Direction Cosines
- Uninspired
- · Replies 7 ·
Magnetic field intensity questions
- Steven-
- · Replies 5 ·
How many electrons are involved in a lightning flash
- Whatupdoc
- · Replies 3 ·
How do I find the integral of ln x?
- lsim16
- · Replies 7 ·
Problem in graph of Quadratic Equation
- Neha Sanghvi
- · Replies 1 ·
Integrating a second derivative-involving solution for Simple Harmonic Motion
- insertnamehere
- · Replies 3 ·
Vector Area Integration: Proving Properties
- Reshma
- · Replies 5 ·
How far did the car travel in that time?
- thschica
- · Replies 2 ·
Car slowing from given speed to rest in given time.
- thschica
- · Replies 1 ·
Conditional probability - Random number of dice
- Alexsandro
- · Replies 4 ·
How to Calculate Acceleration for a Stopping Sports Car
- thschica
- · Replies 8 ·
Calculating Cliff Height Using Acceleration Due to Gravity
- thschica
- · Replies 6 ·
Integrals and dirac delta function
- EvLer
- · Replies 4 ·
Does a point on a CD's outer edge move faster than one on the inner edge?
- Donna
- · Replies 3 ·
Build a Spaghetti Bridge - Holds 10-15kgs!
- liv
- · Replies 1 ·
What Do M and C Represent in Einstein's Equation E=MC^2?
- whatzzupboy
- · Replies 19 ·
Solving a Quadratic Equation: Find Real Values of 'p
- Solidmozza
- · Replies 3 ·
Questions about error treatment
- Freedom
- · Replies 4 ·
Solving y' + 4xy - y² = 4x² - 7 with substitution v = y/x
- FeynmanIsMyHero
- · Replies 3 ·
Volume of solid within sphere and cone using polar coordinates
- amcavoy
- · Replies 1 ·
Identifying Inconsistent Systems of Linear Equations with Gaussian Elimination
- Muzly
- · Replies 4 ·
Is This Airplane in Equilibrium During Horizontal Flight?
- lilkrazyrae
- · Replies 6 ·
How is power proportional to acceleration?
- hola
- · Replies 5 ·
How Do You Calculate the Direction of a Child Walking on a Moving Ship?
- Whatupdoc
- · Replies 1 ·
How Fast Is the Car Traveling When It Overtakes the Truck?
- courtrigrad
- · Replies 12 ·
Find the equation of the sphere
- Whatupdoc
- · Replies 2 ·
Solving Integral Trouble: \int ln(2x+1)dx
- laker88116
- · Replies 5 ·
Finding net force and acceleration of a 10 m diameter helium balloon
- physicsCU
- · Replies 2 ·
Laplace transform with abs value in exponential
- EvLer
- · Replies 3 ·
Calculating Position and Distance in Simple Harmonic Motion: A Case Study
- insertnamehere
- · Replies 4 ·
Vector analysis notation question
- Brad Barker
- · Replies 14 ·
At what distance is Earth's gravitational pull equal to the Moon's?
- lilkrazyrae
- · Replies 9 ·
Application of non conventional energy
- aniket
- · Replies 2 ·
Graphing a parabola for a calculus problem
- hotrocks007
- · Replies 3 ·
How Do You Derive the Cartesian Equation from a Vector Function?
- gordda
- · Replies 4 ·
Loci Conics Parabola eqn in standard form
- aisha
- · Replies 11 ·
Limit of t divided by sqrt(4+t) minus sqrt(4-t) as t approaches 0
- sony
- · Replies 9 ·
Integration of dy/(1+0.01y²)=dx
- asdf1
- · Replies 3 ·
Proving Linear Independence of Non-Zero Rows in Row-Echelon Form
- Benny
- · Replies 3 ·
Solving ODE Confusion: x>0, y≠0
- Benny
- · Replies 2 ·
Why doesn't the edge of a spinning CD move faster than the center?
- Donna
- · Replies 6 ·
Eagle flying between two approaching trains at 100 km apart
- Salman
- · Replies 11 ·
Thermometer measures the amount of infra-red radiation only
- primarygun
- · Replies 5 ·
Solving Exploding Question with Relativity
- asdf1
- · Replies 4 ·
How Many kN Are Equivalent to a Kg?
- lilkrazyrae
- · Replies 3 ·
What are the basics of physics regarding displacement, velocity, and time?
- roger
- · Replies 6 ·
Estimating Diameter of an Oil Slick with One Liter of Spilled Oil on a Lake
- mlowery
- · Replies 2 ·
Projectile motion via a spring (well, actually, rubber bands )
- caddyguy109
- · Replies 12 ·
Where on the X-axis is the Net Force Zero for Charges -5q and +3q?
- echau
- · Replies 11 ·
Elecric charge and electric field
- jena
- · Replies 6 ·
Definition of a Continuous Functions
- Oxymoron
- · Replies 5 ·
Twin paradox: signals sent during space voyage at 0.8c
- asdf1
- · Replies 3 ·
Acceleration and relativity question
- asdf1
- · Replies 3 ·
Finding complex numbers b and d for rectangle ABCD in Argand diagram
- coffeebeans
- · Replies 6 ·
Is There a Dirac Delta Function in the Curl of \( r^n \hat{r} \)?
- Reshma
- · Replies 6 ·
Solve 99^99 congruent to (mod 47) using Fermat's Theorem
- pivoxa15
- · Replies 5 ·
Converting 6x² + 3xy + 6y² = -3 to polar form
- TonyC
- · Replies 2 ·
Does a light bulb brighten while a series capacitor charges then dim when fully charged?
- forevermoreOC
- · Replies 7 ·
Brightness of Mars as observed from earth.
- teh_game
- · Replies 7 ·
What is the significance of the conjugate eigenvalues in a quantum Hamiltonian?
- eljose
- · Replies 5 ·