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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Why does sodium lose its electron to water?
- c_d
- · Replies 2 ·
Simplifying tan(x)cos(x) and similar trig products
- Arsonade
- · Replies 7 ·
Programming a robot for a contest
- eax
- · Replies 2 ·
How does a stretched rope vibrate when released from an initial deformation?
- quasar987
- · Replies 13 ·
How does the size of an atom affect its electric field energy?
- jmb741
- · Replies 2 ·
Vectors and the geometry of space problems
- UNIQNESS
- · Replies 14 ·
Maximum range/endurance of an aeroplane
- jdstokes
- · Replies 3 ·
Optimal distance D to minimize time on frictionless track
- Shadowness
- · Replies 2 ·
How close do submarine and battleship traveling to point P get?
- gordda
- · Replies 6 ·
How Long Did It Take to Build Brightvale Castle?
- bblueblob
- · Replies 6 ·
How Is Electric Field Energy Calculated in a Classical Hydrogen Atom Model?
- bertholf07
- · Replies 2 ·
Difference between local and relative maxima/minima
- UrbanXrisis
- · Replies 2 ·
Finding Sr(OH)2 concentration from pH 11
- laker_gurl3
- · Replies 2 ·
How Do Acid Dissociation and Ionization Differ in Water?
- Raza
- · Replies 4 ·
Magnetic Moment of 4-Sided Loop?
- jackdamack10
- · Replies 3 ·
How Can I Build a Stronger Electromagnet for My Physics Project?
- mgiddy911
- · Replies 2 ·
Right hand rule for force when current and field aren't perpendicular
- Josh123
- · Replies 5 ·
Force (Can someone check what I did wrong)
- Josh123
- · Replies 8 ·
Complex Number Proofs: Solving for z and z^-1 in a Cosine Equation
- HenryHallam
- · Replies 4 ·
Is the Speed Calculation for an Artificial Satellite Accurate?
- bullroar_86
- · Replies 2 ·
What does the double bar notation 9||2 mean?
- ness9660
- · Replies 6 ·
Finding final volume in adiabatic expansion of monatomic gas
- espnaddict014
- · Replies 45 ·
Quantum phsics and x-ray physics
- whiteshado
- · Replies 22 ·
Elementary linear algebra questions
- tigerseye
- · Replies 2 ·
How can I solve for the mass of the first car in an elastic collision problem?
- tony873004
- · Replies 2 ·
Finding sample sizes from confidence interval margins of error
- Absolut
- · Replies 2 ·
Is HCl purely covalent or does it have ionic properties in water?
- Yomna
- · Replies 2 ·
Heat needed to warm water and aluminum from -5°C to 96°C
- oldschool
- · Replies 7 ·
Solving Quadratic Equations with a New Method
- abia ubong
- · Replies 7 ·
What Energy Changes Occur When a Vehicle Accelerates on a Horizontal Road?
- fork
- · Replies 2 ·
Calculating Power in a Variable Mass Work Problem
- sAXIn
- · Replies 11 ·
How Do Sharp Points Affect Electric Fields in Gaussian Surfaces?
- nishant
- · Replies 17 ·
Power Series Expansion of f(x) = \frac{10}{1+100*x^2}
- ProBasket
- · Replies 5 ·
Are My Arithmetic/Geometric Sequence Answers Correct?
- jai6638
- · Replies 4 ·
What is the beat frequence in Hz of ultrasound
- confused1
- · Replies 2 ·
Induced emf in secondary coil around solenoid
- shikagami
- · Replies 15 ·
Surface area of rotation around a vertical line x=4
- yeuVi
- · Replies 7 ·
Conditional probability problems on dice, chocolate bars and quality control
- Physics is Phun
- · Replies 8 ·
Calculating Speed of Descending Block B using Energy Methods
- ~angel~
- · Replies 6 ·
Calculating Magnetic Forces on a Current Loop in a Uniform Field
- Jon Wilson
- · Replies 6 ·
Is Gravity Stronger Than Electromagnetic Forces?
- UrbanXrisis
- · Replies 12 ·
Flow of electrons (electricity/mechanics problem)
- benji
- · Replies 2 ·
Why does plotting x sec²x = 5 give different results?
- UrbanXrisis
- · Replies 3 ·
Initial Conditions of an Undamped Forced Harmonic Oscillator
- ColdFusion85
- · Replies 4 ·
Motion in two dimensions question
- jhson114
- · Replies 16 ·
Mastering Related Rates: Solving Tricky Problems
- scorpa
- · Replies 2 ·
I must have missed this lecture
- monet A
- · Replies 3 ·
Entropy of a Schwarzchild black hole
- johnwalton84
- · Replies 7 ·
How to Identify Lewis Acids and Bases and Their Conjugate Base Formulas?
- BH20
- · Replies 3 ·
How Do You Calculate Temperature and Pressure in Isentropic Compression?
- bruce999
- · Replies 2 ·
How Do You Calculate pH for a NaCN and HCN Solution?
- Giuseppe
- · Replies 3 ·
Fine temperature of equal masses of hot tea and ice after melting
- Jayhawk1
- · Replies 9 ·
Recursion Formula for Series: a (n) = 1/2^n
- hamsterbrs
- · Replies 2 ·
Calculate Proton Energy in eV in Magnetic Field of 1.15T
- blue_soda025
- · Replies 2 ·
Magnetic field problem with torques not canceling
- Tom McCurdy
- · Replies 5 ·
Finding uncertainty in spring constant k from Hooke's law graph
- Vibu212
- · Replies 6 ·
Why does current increase when internal resistance decreases?
- krypt0nite
- · Replies 2 ·
Solving Angular Rotation w/ Constant Acceleration - Emilie
- ~angel~
- · Replies 3 ·
Quantum Physics: Determining Planck's Constant and Work Function
- Tokimasa
- · Replies 3 ·
Comparing mechanical work rate Fv with heat development rate i²R in a circuit
- shikagami
- · Replies 20 ·
Solving the Wallis Product: Constructing Rectangles for $\pi/2$
- DivGradCurl
- · Replies 2 ·
Hot-air balloon temperature for required lift
- Jayhawk1
- · Replies 3 ·
Can i get some one to do this probfor me
- bigskilly
- · Replies 2 ·
What Temperature Must the Air Inside a Hot-Air Balloon Reach for Adequate Lift?
- notorious big
- · Replies 3 ·
What is the pressure on the sample if 300 N is applied to the lever?
- physicsss
- · Replies 7 ·
Crossed Electric and Magnetic fields problem
- futron
- · Replies 6 ·
How does the photoelectric effect suggest the particle-like nature of light?
- vangto
- · Replies 2 ·
Simple linear algebra question (test in a few hours)
- Physics_wiz
- · Replies 2 ·
Spring constant from hanging load and pulley system with three blocks
- Vxismyname
- · Replies 4 ·
Smallest Norm in a Hilbert Space
- Oxymoron
- · Replies 2 ·
How long did the rocket remain in the air?
- mohlam12
- · Replies 5 ·
Understanding Electromotive Force: Solving Problems in Magnetic Fields
- shikagami
- · Replies 2 ·
What's the transformation law for the permutation
- elessar_telkontar
- · Replies 2 ·
Gravitational acceleration 200 km above Earth's surface
- Linco
- · Replies 2 ·
How Do Electrical Forces Interact in Physics Problems?
- seiferseph
- · Replies 2 ·
Solve Velocity Problem: Dropped from 3m, .5m Radius, .2kg Mass
- titusdna
- · Replies 2 ·
Minimize Impedance - (eletromagnetism)
- FrogPad
- · Replies 2 ·
How do you determine the values of m and k in a strong primality test?
- JaeSun
- · Replies 2 ·
AZINGLY SIMPLE! How to Calculate Electric Repulsion Force
- thomasrules
- · Replies 5 ·
Determine the magnetic field strength
- dsandhu
- · Replies 2 ·
How Do I Prove This Limit Statement in Calculus?
- ocalvino
- · Replies 2 ·
Verifying Maclaurin Series for f(x)=ln(1+x)
- Richter915
- · Replies 29 ·
How Can I Solve My Grade 12 Algebra-Geometry Problem Online?
- xLaser
- · Replies 2 ·
How Does Friction Convert Kinetic Energy to Thermal Energy in a Skidding Car?
- mugzieee
- · Replies 2 ·
Proving rotation transformation formulas using polar equations
- ballahboy
- · Replies 2 ·
How to Find Final Temperature in a Calorimetry Copper Pot Problem?
- ziddy83
- · Replies 2 ·
[Astrophysics] CBR and angular size
- Tloh
- · Replies 1 ·
Accelerations of Two Blocks Connected by a String
- lektor
- · Replies 3 ·
What is specific intensity anyway?
- OETN
- · Replies 2 ·
How Do You Calculate Final Velocities in a Two-Dimensional Collision?
- alisa7217
- · Replies 2 ·
Moment of Inertia: Deriving for a Sphere w/ Spherical Coordinates
- theCandyman
- · Replies 2 ·
What are the advantages of using an inclined plane?
- Chazz569
- · Replies 3 ·
Calculating DeltaT for Brass and Iron Plugs
- KU_Mustang
- · Replies 2 ·
Understanding Magnetic Forces: Direction, Calculation, and Applications
- scorpa
- · Replies 2 ·
Giancoli: Wave Nature of Light: Parallel Crests 2.5cm Apart
- leolaw
- · Replies 6 ·
How Much Power Is Needed to Oscillate and Stop a Seesaw at 30°?
- Eemu
- · Replies 2 ·
How to Find B and H Along the Axis of a Uniformly Magnetized Cylinder?
- Feynmanfan
- · Replies 2 ·
Laser Theory: Calculating Power Gain/Loss with Inverted Medium
- dmann
- · Replies 2 ·
Solving Simultaneous Equations: Other Methods?
- abia ubong
- · Replies 3 ·
Calculating Pressure and Flow in a Pipe System
- wsuguitarist
- · Replies 2 ·