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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Where should a third charge be placed for zero net force?
- max1995
- · Replies 8 ·
It's a work and energy question
- Dirx
- · Replies 1 ·
Solving an RC circuit using explicit euler
- yugeci
- · Replies 7 ·
What Creative Electronics Project Can Be Built With Basic Components?
- ToonBlue
- · Replies 2 ·
Realistic Capacitor with leaking dielectric
- yango_17
- · Replies 2 ·
Calculating Luminosity and Temperature of the Sun from Pluto
- EzequielSeattle
- · Replies 4 ·
Determining equations for tension in 3D statics problem.
- VS9
- · Replies 2 ·
Finding friction force *without* mass or coefficient
- Amy G.
- · Replies 7 ·
The force of gravity of two objects on a third?
- Mr Davis 97
- · Replies 3 ·
Finding maximum height from a velocity-time graph of a thrown ball
- moenste
- · Replies 10 ·
Projectile Launching Question(multiple parts)
- brayr0019
- · Replies 3 ·
Method for determining error in an equation
- WK95
- · Replies 6 ·
Headspace air pressure in a closed tank with fluid and manometer tubes
- jderulo
- · Replies 34 ·
How to Find the Magnitude of the Pebble's Velocity in Projectile Motion?
- GZM
- · Replies 20 ·
Mis-using Bernoulli's Equation for Gas Flow Analysis?
- manderson99
- · Replies 4 ·
De broglie wavelength for helium and distance between atoms
- wang jia le
- · Replies 1 ·
Distance traveled and the kinetic energy of a sphere
- moenste
- · Replies 11 ·
Dielectric inserted in parallel plate capacitor
- PP27
- · Replies 2 ·
Drag, terminal velocity, and force.
- BadStudent123
- · Replies 9 ·
What is the ideal value of T for the rocket to reach 990 m altitude?
- GZM
- · Replies 9 ·
Deriving the field line equation dx/Ex = dy/Ey = dz/Ez from E × dl = 0
- Roy Fokker
- · Replies 1 ·
Finding Initial Angle for a Projectile to Hit a Target 10,000 ft Away
- Marcin H
- · Replies 3 ·
Rocketeer catching falling student from CN Tower
- GZM
- · Replies 4 ·
Capacitance of 3 Hollow Cylinders
- adenine7
- · Replies 6 ·
Why does smaller θ give smaller actual uncertainty?
- Janiceleong26
- · Replies 12 ·
Finding distance and velocity of mass suspended from gear system
- dumbdumNotSmart
- · Replies 2 ·
Finding acceleration from a position vs. time
- Detinator10
- · Replies 1 ·
How Much Force Must a Tractor Exert to Pull a Sled Up a Hill with Friction?
- Richard1864
- · Replies 1 ·
Force calculation (not 100% sure what type it is)
- KUphysstudent
- · Replies 1 ·
Tension and Pulleys theory question
- DanielleG
- · Replies 2 ·
What is the Minimum Distance x for an Interrupted Pendulum to Wrap Around a Rod?
- Bob Jagnaf
- · Replies 1 ·
Angular momentum conservation when two discs interact via friction
- Titan97
- · Replies 7 ·
Newtonian mechanics - hillside fired projectile
- KUphysstudent
- · Replies 5 ·
What is the expected value of x^2 for a wave packet in momentum representation?
- rgalvao
- · Replies 2 ·
Dipole magnitude and direction (21.67)
- Calpalned
- · Replies 3 ·
Ansatz for Hysteretic oscillation
- Remixex
- · Replies 3 ·
Oscillation Equation Typo in Textbook?
- Calpalned
- · Replies 2 ·
Light Bulb and Transmitted Intensity?
- AimlessWander
- · Replies 1 ·
Moment at a point when the object is sliding
- goldfish9776
- · Replies 27 ·
What is the Launch Angle of a Projectile at Half Its Maximum Height?
- hawkeye1029
- · Replies 3 ·
Building a capacitor to find the dielectric constant
- xSpartanCx
- · Replies 10 ·
Distribution of charge on two spheres
- Vibhor
- · Replies 3 ·
Conservation of electric potential energy
- xSpartanCx
- · Replies 7 ·
How Does Linear Charge Density Affect Electric Field Calculation?
- kahlua13
- · Replies 1 ·
Calculating Induced EMF using Faraday's Law: A Magnetic Flux Problem Solved
- YoshiMoshi
- · Replies 5 ·
Distance traveled before maximum force on 2.3 kg steam train
- siimplyabi
- · Replies 2 ·
Can centripetal acceleration be zero in non-uniform circular motion?
- nashsth
- · Replies 1 ·
Positions Versus time on an incline
- myeeth22
- · Replies 4 ·
Two blocks connected by a string
- Sarah Kenney
- · Replies 2 ·
What Does an Electronic Balance Measure in Water Experiments?
- SataSata
- · Replies 12 ·
How Do You Calculate Total Energy in Blackbody Radiation?
- Abdul.119
- · Replies 2 ·
Method Of Members: Finding reactions
- SagarPatil
- · Replies 1 ·
Calculating Work Required to Rotate a Dipole in an Electric Field
- Calpalned
- · Replies 4 ·
What is the weight of a bucketful of water?
- siimplyabi
- · Replies 5 ·
Calculate the direction of the electric field (21.34)
- Calpalned
- · Replies 2 ·
Minimum and Maximum Observed Frequencies?
- AimlessWander
- · Replies 2 ·
How Do You Calculate Jerk in Uniform Circular Motion?
- toesockshoe
- · Replies 9 ·
Theoretical vs measured sheet resistance of conductivity paper
- Vaclav
- · Replies 5 ·
Electron microscope particle relativistic mass
- ForTheGreater
- · Replies 5 ·
Centripetal Force Theory Questions
- DanielleG
- · Replies 14 ·
Determine the currents in this electrical network
- Edge Of Pain
- · Replies 3 ·
Tension in a rope in an accelerating towplane (AP French 7-1)
- TimSon
- · Replies 2 ·
Energy unit to kelvin, seconds, density, length
- June_cosmo
- · Replies 1 ·
Finding the sag caused by a weight in an equilibrium?
- AObeid
- · Replies 2 ·
RL circuit with time-varying voltage source E(t)=te^(-t)
- masterchiefo
- · Replies 8 ·
Tension at the lowest point of a hanging chain
- Joe8
- · Replies 2 ·
Electromagnetic Induction in a disc
- Yashbhatt
- · Replies 3 ·
Quantum Mechanics (Wien’s displacement law)
- says
- · Replies 4 ·
Why can't I show Newton's Third Law by different means?
- UseAsDirected
- · Replies 5 ·
Solving the Force Monkey Problem: Bush Baby Physics
- Ivawen
- · Replies 5 ·
Why Does the Normal Force Decrease When Pulling Upward on an Object?
- David Donald
- · Replies 3 ·
Finding the Center of Mass of a Triangle
- Acemave
- · Replies 2 ·
Ideal Gas Law in "alternate" universe
- RaulTheUCSCSlug
- · Replies 4 ·
Momentum graph + why graph should be curved line
- Barclay
- · Replies 2 ·
Finding Potential Difference in a Potentiometer Circuit
- Janiceleong26
- · Replies 10 ·
Impulsive Tensions involving 3 particles
- Physgeek64
- · Replies 13 ·
Centripetal acceleration in separating protein
- tvtokyo
- · Replies 1 ·
Why do I have to make gravity positive to make this work?
- Shivang Saxena
- · Replies 1 ·
How does a high-speed rail work/operate?
- Ng Sio Hong
- · Replies 2 ·
Least amount of time for motion
- aaphys
- · Replies 2 ·
A spring is suspended on the ceiling of a truck, find acceleration?
- greenglasses
- · Replies 1 ·
Question regarding the derivation of the wave equation
- Chump
- · Replies 1 ·
Finding tension in string in vertical circle
- greenglasses
- · Replies 1 ·
What Is the Correct Period and Frequency for an Electron in a Magnetic Field?
- BigFlorida
- · Replies 1 ·
Determine the rotation period of a disc with 2m radio , that
- DexterV
- · Replies 2 ·
The Pressure Variation with depth in various Water Bodies
- sandeep singh
- · Replies 7 ·
Force with friction problem(determine a force by the angle)
- suyashr99
- · Replies 4 ·
Terminal velocity of loop falling through magnetic field
- Rawl
- · Replies 1 ·
Finding displacement and time from velocity and acceleration
- Jaycee
- · Replies 7 ·
Centripetal Force Experiment: Impact of Free Mass on Error
- andyfeynman
- · Replies 1 ·
Task: Function for the acceleration throughout a loop?
- OskarBillington
- · Replies 4 ·
Force of 5N applied to 5kg block on table w/ μk = .1
- Ocata
- · Replies 12 ·
Change in entropy for 2 moles of ideal gas heated from 100 L to 150 L
- zerorin
- · Replies 2 ·
Significant Figures: What is the Correct Number for g in Your Area?
- logans_run
- · Replies 4 ·
Force With a Pulley: Theoretical and Experimental
- Thornak
- · Replies 4 ·
Confusion about calculating energy output.
- srarahcha
- · Replies 5 ·
How Do You Calculate the Magnetic Field Near a Solenoid?
- SamL
- · Replies 8 ·
Finding speed of stone when it hits the ground.
- justinm326
- · Replies 2 ·
Work done by catapult on J-15 fighter and rotating disk kinetic energy
- Benny T
- · Replies 5 ·
Deriving equations of motion for two masses with springs and damping
- wololo
- · Replies 14 ·