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 Vector Sum of Two Vectors with Equal Magnitude and Different Angles?
- Flash70
- · Replies 2 ·
Calculating Minimum Force to Prevent Slipping on an Inclined Plane
- zaper
- · Replies 10 ·
Calculate Charge of Object A: Mass 100g, Force 0.35N
- Miike012
- · Replies 2 ·
Mass of Object in Uniform Electric Field
- gotpink74
- · Replies 2 ·
Find "g" Value on Distant Planet: 6.501m/s^2
- climb515c
- · Replies 1 ·
Electron velocity in Electric Fields
- C6ZR1
- · Replies 27 ·
Thermal Energy Transfer: A Gas Heated at Constant Volume and Pressure
- calculusisrad
- · Replies 1 ·
Ball thrown vertically from 40m building with 4s upward flight
- lNVlNClBLE
- · Replies 34 ·
Ball thrown from 45 m building at 30° and 20 m/s
- lNVlNClBLE
- · Replies 5 ·
Why Did the Wave Interference Proof Simplify This Way?
- QuarkCharmer
- · Replies 4 ·
Dimensional analysis of y = (2m)cos(kx) with k = 2m^-1
- Copse
- · Replies 6 ·
Uncertainty in ln(R) Calculation in R: Is (uncert in R)/R Correct?
- NachoNovo
- · Replies 1 ·
How Much Power is Lost in a Copper Wire in a Series Circuit?
- chawki
- · Replies 5 ·
Electric field due to a nonconducting sphere
- cesaruelas
- · Replies 1 ·
Angular displacement is not a vector
- spaghetti3451
- · Replies 1 ·
Number of Resistors needed for a maximum power
- chawki
- · Replies 3 ·
Electric field stregth between charges
- GRAvit__
- · Replies 4 ·
Relativistic Spaceship moving past Earth
- PermaTrashed
- · Replies 15 ·
Energy principle and circular/ellipse orbits
- Uniquebum
- · Replies 2 ·
Charged sphere hanging between capacitor plates at what angle
- hrappur2
- · Replies 9 ·
How Does Side Length Influence Electric Flux Through a Cube?
- kirby2
- · Replies 2 ·
A few conceptual problems with moments
- mHo2
- · Replies 1 ·
My answers seem ok but differ from book.
- jiboom
- · Replies 9 ·
Finding an Unknown Resistance of circuit
- SMA777
- · Replies 4 ·
Alternate River crossing problem
- Aeriankork
- · Replies 11 ·
Energy conservation vs momentum conservation in SHM
- nikhilarora
- · Replies 4 ·
Acceleration and tension in a system
- furor celtica
- · Replies 3 ·
Bar magnet at solenoid entrance when current turns on
- PhysicsJunkie
- · Replies 7 ·
Torque from a brick on a bike pedal and drawbridge statics problems
- chambo622
- · Replies 3 ·
A cylinde with a piston in contact with a heat reservoir at 353 k.
- calculusisrad
- · Replies 1 ·
Final velocity of a proton through parallel plates
- Serendipitydo
- · Replies 1 ·
Using Vectors to Find Displacement and Angle
- sb13
- · Replies 2 ·
Electric Field due to a rod (1-dimensional)
- thoff430
- · Replies 1 ·
Maximum Centripetal Acceleration
- bearbratz
- · Replies 1 ·
How Do You Find the Total Energy and Speed of a Relativistic Particle?
- kikko
- · Replies 1 ·
Finding spring constant k in N/m
- jimko
- · Replies 3 ·
Three negative point charges lie along a line
- kirby2
- · Replies 3 ·
Uniform charged ball charge density problem
- kirby2
- · Replies 6 ·
Why does a sonic boom occur and what causes the condensation cone behind a plane?
- ponjavic
- · Replies 7 ·
How Does Sound Refract When Moving from Air to Water?
- j.c
- · Replies 1 ·
Center of mass of half-cylinder and hydrostatic force on its face
- IntegrateMe
- · Replies 2 ·
Solving the Supersonic Speed Problem in Physics
- Schalchlin05
- · Replies 6 ·
Finding the Electric Force on a Rod by Linear Charge
- thiefjack
- · Replies 3 ·
Yes, the two expressions are equivalent.
- v_pino
- · Replies 2 ·
Different significant digits in uncertainty and data?
- PChar
- · Replies 1 ·
Flux for an Infinite charge line through a cylinder
- mrshappy0
- · Replies 1 ·
Pivoted beam with force at one end and spring attached to the other end
- snoopios
- · Replies 2 ·
Matrix optics; simple lens system
- mathman44
- · Replies 1 ·
Angle changes in Relativity (Shooting the Deathstar on a flyby)
- khfrekek92
- · Replies 2 ·
Error Analysis: Addition of Quantities with Uncertainty
- NachoNovo
- · Replies 4 ·
Finding the Minimum Angle for a Particle to Reach (x1,z1) from (0,0)
- PhysicsGente
- · Replies 22 ·
Projectile Motion Homework: Finding Maximum Height and Time
- LiiArch
- · Replies 4 ·
Does Bouncing Increase the Impact Force Required in Collisions?
- Judah
- · Replies 2 ·
Calculating Jupiter's Orbital Period Around the Sun: A Physics Problem
- mobius
- · Replies 4 ·
Electric field from charged plane x+2y=5 at point (-1,0,1)
- formulajoe
- · Replies 10 ·
Arrow with 6s flight time and 210m range
- green-insigni
- · Replies 10 ·
Coulomb's law electric field charge on y axis
- kirby2
- · Replies 7 ·
I'm having a lot of trouble converting units
- a1exander
- · Replies 5 ·
Projectile motion with acceleration and vectors
- bkmurphy
- · Replies 2 ·
Find V rms and MM using density
- bmartz
- · Replies 5 ·
Calculating Angle Between Vectors Using Cosine Law
- Uira
- · Replies 2 ·
Charged capacitors in series and both ends of wire connected
- jc345
- · Replies 1 ·
Motion in a Magnetic Field and TV
- MickOtto
- · Replies 1 ·
Light source image in glass plate and convex mirror coincide
- Alpha Russ Omega
- · Replies 7 ·
Tension in a chain of 100 blocks pulled by 100 N force
- sona1177
- · Replies 3 ·
Why is total resistance lower in parallel circuits and what does it do?
- Teachme
- · Replies 2 ·
Work done moving two charges together
- phosgene
- · Replies 3 ·
How Does Igniting Fuel at the Trajectory's Apex Affect Missile Debris Dispersal?
- gettix
- · Replies 1 ·
Heat ice to steam and cooling lead in water problems
- calculusisrad
- · Replies 2 ·
Doppler-shifted frequency problem
- hitman0097
- · Replies 3 ·
Effect of Tangential and Normal Forces on Orbital Velocity of Planets
- Numnum
- · Replies 1 ·
The question is: How can I find the magnetic field inside a long conductor?
- humanist rho
- · Replies 2 ·
Momentum and Impulse: Dropping an Object
- Judah
- · Replies 3 ·
F = ma 2007 Exam - Question #25 - SHM with a box in water
- physicsod
- · Replies 5 ·
Ideal Gas law and mole conversions
- Cfem
- · Replies 1 ·
Accelerating a Uniform Sphere Down an Incline
- physikx
- · Replies 3 ·
What Are the Temperatures of an Ideal Gas During an Adiabatic Expansion?
- coldjeanz
- · Replies 5 ·
How does pressure affect work done in ideal gases?
- Rapier
- · Replies 2 ·
LCR circuit resonance: finding frequency and voltage to shatter glass
- DTskkaii
- · Replies 9 ·
Stepper Motor Torque Characteristic Measurement
- DBoy00
- · Replies 4 ·
What is the electrical potential energy of a triangular charge configuration?
- stonecoldgen
- · Replies 3 ·
Impulse Momentum Theorem + Egg Drop?
- hannahd
- · Replies 3 ·
[objet falling] Air resistance / terminal velocity
- ihatephysics1
- · Replies 1 ·
Expert Witness Testimony: Accident Analysis
- InsTanCeZ
- · Replies 2 ·
Calculating Centripetal Acceleration in a Speed Skater's Turn
- Dylan6866
- · Replies 2 ·
Ball on string hanging from movable cart
- spartanpol
- · Replies 2 ·
How to calculate instantaneous acceleration?
- treyh
- · Replies 2 ·
Airbag stopping distance with constant acceleration
- Mdhiggenz
- · Replies 1 ·
Finding the current in a resistor
- Maddy315
- · Replies 3 ·
Proving Kirchoff's Laws algebraically
- shyguy79
- · Replies 8 ·
What Is the Electric Potential at the Origin Given Four Point Charges?
- jehan60188
- · Replies 2 ·
Circular mass, finding multiple variables
- vaironl
- · Replies 1 ·
What is necessary for an object to move?
- kaed
- · Replies 9 ·
Need a demonstration of interference in Waves
- Slason
- · Replies 1 ·
How Does a Diverging Lens Affect Image Position and Size?
- araicktavio
- · Replies 1 ·
Specific heat capacity and changing temperature of water
- rugby123
- · Replies 1 ·
Man stuck to rotating cylinder wall with friction
- Seydlitz
- · Replies 5 ·
Why does a magnet fall slowly through a copper tube?
- jsmith613
- · Replies 1 ·
Charge and voltage across capacitors in series and parallel
- Grandsatsuma
- · Replies 7 ·
Develop an expression for Temp as a function of time
- swmmr1928
- · Replies 12 ·