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 wave speed and string velocity for y(x,t) = 3e^-(2x-4t)^2?
- Faux Carnival
- · Replies 3 ·
How Do You Calculate EMF in a Circuit with a Resistor?
- pat666
- · Replies 3 ·
Proving equations for a plane stress condition
- a_hargy
- · Replies 1 ·
Angular acceleration of a discus
- sona1177
- · Replies 4 ·
Why Does Water Refract Light and Improve Visibility?
- harimakenji
- · Replies 2 ·
Does Throwing Rocks from a Boat Affect Water Level?
- pookisantoki
- · Replies 6 ·
What is the final temperature of the water when ice is added to it?
- missileblitz
- · Replies 5 ·
Understanding Magnetic Flux and Eddy Currents in Electromagnetic Induction
- thereddevils
- · Replies 4 ·
Angle of Incline Calculation with Coefficient of Friction
- db7db7db7
- · Replies 5 ·
Where Is the Point of Zero Net Gravitational Force Between Earth and the Moon
- elasticities
- · Replies 9 ·
Easy-ish Conservation of Energy question
- elasticities
- · Replies 6 ·
System of Masses and Pulley, Problem
- fsun
- · Replies 3 ·
Probability of events and coin tosses
- tmy0221
- · Replies 1 ·
What horizontal force is required to accelerate the block
- a7med2009
- · Replies 8 ·
Equilibrium of a Spring: Force or Mass?
- Procrastinate
- · Replies 2 ·
Minimum velocity and angle for bullet to hit duck in flight
- masohman
- · Replies 3 ·
Time taken to travel x meters with constant acceleration
- the_cloud
- · Replies 6 ·
Fly traveling between car and wall: how many trips?
- The legend
- · Replies 5 ·
Electric potential and charge on capacitors-
- Kalibasa
- · Replies 11 ·
Understanding Standing Waves for SAT II Physics
- panli19
- · Replies 2 ·
Solving a 2.2kg Block Incline Problem
- GOPgabe
- · Replies 2 ·
How Do You Determine Quantum Numbers from Hydrogen Atom Wavelengths?
- Ush
- · Replies 12 ·
How can we determine the rotational axis for a torques-related problem?
- oontvoo
- · Replies 1 ·
What is the Doppler Effect and When Does it Occur?
- Fluorescent
- · Replies 1 ·
Force needed to slow a 10kg mass at rate g
- jerryez
- · Replies 24 ·
How Does Friction Affect the Stopping Time of a Rotating Grindstone?
- mizzy
- · Replies 13 ·
Weight on an Elastic thread question.
- Firefox123
- · Replies 8 ·
Electric Field of ping pong ball of mass
- llamajuice
- · Replies 5 ·
Chlorophyll and the Photoelectric Effect
- merryjman
- · Replies 3 ·
Loss in gravitational energy during condensation of star
- gaobo9109
- · Replies 2 ·
Calculating Q (first moment of inertia) above and below the neutral axis
- tn3003
- · Replies 2 ·
Free fall problem involving two objects
- Dragonite
- · Replies 2 ·
Electrostatics (Distance of closest approach)
- Mandeep Deka
- · Replies 28 ·
Projectile motion and circular motion questions
- babbagee
- · Replies 3 ·
Calculating current in circuit with multiple emf's using Kirchhoff's
- Spudnik
- · Replies 3 ·
When/where will two projectiles converge
- Fortson1
- · Replies 10 ·
Calculating Force from Pressure and Area
- dgill23
- · Replies 1 ·
Find electronic force, this one is driving me crazy,
- nutriculium
- · Replies 6 ·
Electrostatic force,electric field,electric potential,electric flux
- jasonlewiz
- · Replies 2 ·
Force between two perpendicular currents
- j-so16
- · Replies 2 ·
Maximum voltage in a capacitor with 2 dielectrics
- Phillipe
- · Replies 8 ·
Designing a Windmill for Maximum Power
- Swap
- · Replies 1 ·
How Do You Calculate Displacement Angles?
- isnipeu2
- · Replies 3 ·
Potential difference across a square
- shawli
- · Replies 2 ·
Cuurent in straight wire and direction of magnetic force
- tbaguy
- · Replies 3 ·
The number of Helium atoms in the balloon
- jinx007
- · Replies 2 ·
Wave Interference at Radio Station Antennas
- llamajuice
- · Replies 4 ·
Work- constant pressure, changing volume
- physics1234
- · Replies 2 ·
Rotating reference system - centrifugal force
- mathfilip
- · Replies 9 ·
A simple thermodynamic question
- arkofnoah
- · Replies 3 ·
Finding an unknown resistance in an Electric Circuit
- mlostrac
- · Replies 1 ·
How Do You Calculate Work Done by a Non-Constant Force on a Variable Mass?
- madah12
- · Replies 6 ·
Solving Energy Problems: Understanding Capacitors and Voltage
- xpack
- · Replies 1 ·
Force at Equilibrium: How to Solve X and Y Components of Tension
- GOPgabe
- · Replies 3 ·
Power Relative to Time Question
- bmxrider945
- · Replies 4 ·
How to Calculate Flow Rate Using Bernoulli's Equation Without Given Velocity?
- Noles1
- · Replies 2 ·
Finding worked Fourier series problems
- Gza
- · Replies 11 ·
Force on the charge, coloumb's law vector form
- co2junkie
- · Replies 2 ·
What is the acceleration of a hockey puck sliding on a frozen lake?
- JassC
- · Replies 30 ·
A Simple Harmonic Motion Problem
- Faux Carnival
- · Replies 4 ·
The prism is made from glass and its cross section is an
- atoreta88
- · Replies 1 ·
Question on gravitational field
- gaobo9109
- · Replies 1 ·
Electric Potential Energy Problem
- mlostrac
- · Replies 1 ·
A difficult boat and river problem
- Swap
- · Replies 4 ·
Potential difference given velocity of electron at 2 points
- louza8
- · Replies 10 ·
Will the Football Reach the Goalpost? - Projectile Motion in Soccer Practice
- utkarsh009
- · Replies 6 ·
Mechanics displacement Question
- Kommandant
- · Replies 4 ·
Why Does the Penny Slide Off the Record at 0.080m?
- mizzy
- · Replies 3 ·
How much energy is need to place four positive charges
- mlostrac
- · Replies 4 ·
Tension in rope for stuntman swinging in vertical circle
- mizzy
- · Replies 6 ·
Resistance and Current-Direct Current Circuits
- glamdring22
- · Replies 7 ·
Yes, the charge should be placed 0.012 m to the right of the -q charge.
- mlostrac
- · Replies 5 ·
Does force equal stress and displacement equal strain in a spring?
- Procrastinate
- · Replies 2 ·
Force as a function of position
- TPD06
- · Replies 6 ·
Calculating Orbital Speed and Period for a Satellite in Circular Orbit
- mizzy
- · Replies 2 ·
Measuring Projectile Efficiency: Is 51% Accurate?
- donkeycopter
- · Replies 1 ·
How do I find the reduced force on an object due to springs?
- Assasinof6
- · Replies 29 ·
Calculating Magnetic Field and Induced EMF in a Concentric Loop System
- thebert010
- · Replies 8 ·
Magnectic force on current carrying wire
- bharath423
- · Replies 2 ·
Need help with some questions on relativity please
- ArtStudentEli
- · Replies 4 ·
Speed, velocity and acceleration
- hitomi_10
- · Replies 7 ·
Potential Energy (A box attached to a spring which is attached to the ceiling.)
- LeonGrande
- · Replies 13 ·
Why does the force between two boxes decrease in a two-box system?
- InvisibleMan1
- · Replies 11 ·
Projectile throw angle where max height equals horizontal range with wind force
- PhyNewie
- · Replies 3 ·
Grandfather Clock - How to Make 1 Second?
- annoymage
- · Replies 4 ·
How long for 3 m³ of salt in a thermos to cool from 800°C to 100°C?
- White Noise
- · Replies 10 ·
How Does Electric Potential Energy Relate to Work Done in an Electric Field?
- jinx007
- · Replies 3 ·
Magnetic Fields of a charged particle
- ninetyfour
- · Replies 7 ·
Does a sprinter bursting from blocks violate momentum conservation?
- mizzy
- · Replies 11 ·
Uhf radio wave - determine frequency
- flynostrich08
- · Replies 3 ·
Electric current, resistance and circuits
- pat666
- · Replies 20 ·
How Does a Conducting Bar on Rails Behave in a Magnetic Field?
- krh68
- · Replies 3 ·
Crane Problem, Finding Angular Velocity
- jiffy
- · Replies 2 ·
How many U-235 atoms consumed in a 700 MW reactor in one day?
- abrowaqas
- · Replies 1 ·
Calculating Half-Life of Radioactive KCl
- abrowaqas
- · Replies 1 ·
How far Halley's comet is - Giancoli, p. 153, Pr. 59, 3rd Ed
- bjnartowt
- · Replies 1 ·
Solve Free Fall Problem: Tower Height Calculation
- PhyNewie
- · Replies 4 ·
Why Do Observers A and B Perceive Light Arrival at Different Times?
- seto6
- · Replies 3 ·
Momentum and Energy related Bullet Question
- tmang
- · Replies 2 ·