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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Frame of reference of bicycle rider
- Alex_Neof
- · Replies 2 ·
Potential difference and conductors
- henry3369
- · Replies 6 ·
Calculating energy released by fission.
- nima rahmani
- · Replies 2 ·
Glider moving along an inclined track?
- sammyg18
- · Replies 3 ·
Power dissipated in variable resistor?
- CAH
- · Replies 9 ·
Question on capacitors in an RC circuit
- BlueCerealBox
- · Replies 4 ·
Density and centre of mass problem
- Muffintoast
- · Replies 8 ·
Entropy change of a reservoir after heating something up
- Robsta
- · Replies 3 ·
Does Young's Modulus Change When Nano-Tubes Are Connected End-to-End?
- BoanviaFx
- · Replies 2 ·
Speed of the rod as it leaves the rails?
- nawand
- · Replies 2 ·
How many electrons make up a charge of -15.0 uC?
- Kaylee Hamann
- · Replies 6 ·
Electrostatic Force Concept Question
- whitejac
- · Replies 5 ·
Simple Optics Problem (plane mirror and lens)
- AKJ1
- · Replies 5 ·
How Does Magnetic Field Angle Affect Force on a Current-Carrying Loop?
- Angie K.
- · Replies 4 ·
Magnetic Launcher HW: Find Constant Current Flow
- Angie K.
- · Replies 1 ·
Calculating Adiabatic Cooling at 1000 Meters Using Atmospheric Law
- EzequielSeattle
- · Replies 2 ·
Potentiometer Problem: 3V Battery, 100cm Sliding Wire, and 60cm Voltmeter
- kaka01
- · Replies 2 ·
Light problem -- diffraction grating distance between adjacent bright fringes
- student07
- · Replies 5 ·
Transformers Current and Voltage
- xvivi
- · Replies 3 ·
Thevenin's Problem: Solve for Voltage, Current, Power
- merchant
- · Replies 3 ·
Solving a Puzzling Circuit: Find V2
- kaspis245
- · Replies 42 ·
Finding the number of stars in the milky way
- BOAS
- · Replies 1 ·
Pressure in horizontal rotating tube
- jonny23
- · Replies 3 ·
Force required to hold a pendulum at an angle
- kabirtomer
- · Replies 1 ·
Tension in landing cable on an aircraft carrier
- Alex Thiebes
- · Replies 4 ·
Block Sliding Down a Ramp that is Free to Slide
- PokemonMaster
- · Replies 4 ·
Compton Scattering: Find scatter angle of electron & Vf
- Harry Atkinson
- · Replies 1 ·
Heat Transfer - finding rate of heat transfer
- scrubber
- · Replies 6 ·
Diffraction grating and wavelength
- CAH
- · Replies 1 ·
The current, Potential Difference, in a 3-cell circuit
- YarnJunior
- · Replies 3 ·
How Does Doubling the Force Affect Kinetic Friction Between Two Blocks?
- toesockshoe
- · Replies 6 ·
Forces in Equilibrium acting on wall climber
- RobertLelik
- · Replies 8 ·
Electric Field and Acceleration for a Single Charged Plate and Capacitor
- Zbud
- · Replies 3 ·
How Does Acceleration Affect the Twin Paradox?
- BlackyTheCat
- · Replies 6 ·
What is the Wavelength of Light Used in a Double-Slit Interference Experiment?
- student07
- · Replies 2 ·
What is the percentage uncertainty in V when L1-L2 is 30?
- Rohan1997
- · Replies 4 ·
Momentum in a space shuttle and thrust
- fogvajarash
- · Replies 17 ·
Explaining the Impact of Increasing Bits on Step Height
- PhysicStud01
- · Replies 18 ·
Internal energy and heat of vaporization
- hs764
- · Replies 1 ·
Speed and Frequency of Waves Lab
- member 529879
- · Replies 12 ·
Finding acceleration of block connected to pulley with mass
- AdityaDev
- · Replies 14 ·
How Does Acceleration Affect Spring Stretch in an Adiabatic Piston System?
- AdityaDev
- · Replies 8 ·
Oscillation of point charge due to electric field
- sushichan
- · Replies 1 ·
Free body diagrams and Newton's Law
- Kenny Wallace
- · Replies 1 ·
Where to Place a Fiducial Marker in SHM Systems?
- Rohan1997
- · Replies 2 ·
Why is the Height at Point A Considered to be 2R in a Loop-the-Loop Problem?
- Dr. Who
- · Replies 3 ·
What is the solution to the Wedge-Spring-Block Problem?
- DSM_
- · Replies 7 ·
Active Galaxies: Comparing Optical and Radio Astronomers' Perspectives
- mrjaffa
- · Replies 10 ·
Solenoid Field Strength - Missing Raduis?
- Euler2718
- · Replies 2 ·
Calculating Induced EMF in a Long Wire Using Flux and Lenz Law
- NewYorkMets
- · Replies 1 ·
Average kinetic energy of harmonic oscillator
- shanepitts
- · Replies 2 ·
Time period of a pendulum made of two disks
- vishwesh
- · Replies 4 ·
Martian's Weight on Mars Calculated
- AmericanBoy
- · Replies 8 ·
Question on gravitation and rotation of the Earth
- AakashPandita
- · Replies 5 ·
Simultaneous measurement of the momentum component px
- jdawg
- · Replies 2 ·
How Do Radiation Weighting Factors Affect Equivalent Dose Calculations?
- CheesyPeeps
- · Replies 1 ·
Calculating Vertical Height with Ground Reaction Force, Mass, and Time
- phambino
- · Replies 1 ·
A question regarding an experiment with a magnet and a tube
- Thomas_phys
- · Replies 13 ·
Understanding the Output Voltage of a Transistor Circuit with a Zener Diode
- cpburris
- · Replies 2 ·
Calculate Wavelength of 6th Line in Balmer Series
- JJK1503
- · Replies 3 ·
Standing wave with specific initial/boundary conditions
- Isow
- · Replies 3 ·
Momentum problem -- The collision of two particles with different masses
- A.MHF
- · Replies 3 ·
Why Do Pylons Collapse in Extreme Temperatures?
- CheesyPeeps
- · Replies 3 ·
Construct B field from a given E field using Maxwell's Eqns
- Robsta
- · Replies 2 ·
Have You Calculated Mass Flow Rate Correctly in Fluid Dynamics?
- Camerontocher
- · Replies 3 ·
Find distance of focus point (conceptual)
- Shinwasha
- · Replies 2 ·
Find force to raise load using friction and two bars
- bkw2694
- · Replies 8 ·
How Did John Massis Move Two Railroad Cars with His Teeth?
- copypacer
- · Replies 4 ·
Solve the Mystery of Force 2 on a 2.43 kg Box
- copypacer
- · Replies 8 ·
What Speed and Radius Conditions Keep the Hanging Mass Stationary?
- toesockshoe
- · Replies 3 ·
Calculate force required to tip beam on a rope w/ friction
- bkw2694
- · Replies 7 ·
Solving Force by Table Leg: Find F_A & F_B
- Addem
- · Replies 2 ·
Static Equilibrium - trick question?
- prettydumbguy
- · Replies 3 ·
Help on circular motion problem
- toesockshoe
- · Replies 24 ·
Find the average force exerted on a bullet by a rifle
- Emmerus Yiis
- · Replies 1 ·
Why is the Velocity Too Fast in My Fluids Momentum Conservation Calculation?
- Jaydude
- · Replies 1 ·
General wave equation conceptual questions
- ColtonCM
- · Replies 4 ·
Solving Resistor Circuits: Find Currents in R & 10Ω Resistors
- Angie K.
- · Replies 3 ·
Newton's second with Pullys, Ropes, and Boxes (Frictionless)
- SpacemanRich
- · Replies 10 ·
RC Circuit with a Switch: Potential and Charge Analysis
- Angie K.
- · Replies 3 ·
Charged Capacitors - Homework Equations & Attempt at Solution
- jh001
- · Replies 3 ·
Need help obtaining hydrostatic forces on a gate
- lvluffinz
- · Replies 10 ·
How Do You Calculate Decibel Intensity at a Distance in Spherical Waves?
- PCPanos
- · Replies 2 ·
Ampere's Law and charge on the capacitor
- jsko
- · Replies 4 ·
Calculating Torque on a Point Particle: A Gravitation Force Example
- Cal124
- · Replies 11 ·
Heat transfer through brass and rubber
- max1995
- · Replies 1 ·
Gravitation attraction of inner portion problem
- mooncrater
- · Replies 1 ·
Newtonian Gravitation and stuff
- mooncrater
- · Replies 11 ·
Centripetal motion, find radius - which solution is correct?
- Tyrannosaurus_
- · Replies 2 ·
Standing waves in tube closed tube
- Arcthor
- · Replies 6 ·
Compton effect problem - Find angle and energy of scattered electron
- akennedy
- · Replies 16 ·
3 questions on power and energy
- jinkyfishies
- · Replies 5 ·
How does the Levitron "break" Earnshaw Theorem?
- Muradean
- · Replies 7 ·
Earth's Electric & Gravitational Field: Direction, Shape & Height
- pdaniel
- · Replies 1 ·
Can a Thermometer Be Calibrated Without Using the Formula Provided?
- Demister
- · Replies 2 ·
Equivalent circuit for a battery.
- Yam
- · Replies 4 ·
Using nuclear shell model to determine parity and spin
- Flucky
- · Replies 4 ·
Question about finding height, given vi and time
- mykosfemme
- · Replies 13 ·
How Can You Create Standing Waves from a Given Transverse Wave Equation?
- Okazaki
- · Replies 8 ·
Can x=8sin2t+6cos2t be proven as S.H.M. using a second derivative?
- Cpt Qwark
- · Replies 3 ·