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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Calculating Electric Potential and Field for a Charged Disk
- pakman2012
- · Replies 1 ·
Where is the electric field and potential zero between opposite charges?
- Fusilli_Jerry89
- · Replies 3 ·
How to calculate the jacking forces
- sctong147
- · Replies 2 ·
Calculating the Mass of a Tractor Being Dragged by a Tow Truck on Wet Concrete
- keyser.soze
- · Replies 3 ·
Two conceptual questions: Magnetism
- AznBoi
- · Replies 4 ·
How Do Voltage and Magnetic Fields Affect Electron Force?
- AznBoi
- · Replies 2 ·
What's the Difference Between Cold and Hot Transitions of Light?
- peps
- · Replies 1 ·
Why does a light bulb burn out?
- peteza
- · Replies 3 ·
A physics problem involving an inclined plane and a block
- carrotstien
- · Replies 12 ·
Finding angular deceleration for a circular saw blade coasting to stop
- xXmarkXx
- · Replies 54 ·
How to Calculate Force of Friction and Acceleration for a Block on a Chalkboard?
- keyser.soze
- · Replies 27 ·
Sub-units micro-farad and pico-farad
- natural
- · Replies 7 ·
What Causes the Magnetic Field in Magnetized Iron?
- Emily6
- · Replies 15 ·
How to Solve a Work and Force Problem with Constant Velocity and Friction
- deserthobo
- · Replies 17 ·
The Physics of Ice Melting:Water Level Changes
- _anant
- · Replies 2 ·
How Should the Second Crewman Pull to Align the Boat's Net Force Forward?
- jcais
- · Replies 4 ·
How Do You Calculate Speed After a Partially Inelastic Collision?
- jjf5122
- · Replies 5 ·
Calculating the Diameter of the Moon's Virtual Image
- elitespart
- · Replies 3 ·
Calculating Velocity for Cannon Ball with Wind Velocity
- plinho_v
- · Replies 2 ·
Finding sound speed from standing wave in tube and radio wave phase difference
- kingwinner
- · Replies 6 ·
Finding Velocity of Wedge in Mass Momentum Problem
- psycovic23
- · Replies 7 ·
What is the Formula for Calculating Power and Accounting for Friction?
- Winner
- · Replies 5 ·
Where Did I Go Wrong in Solving This Physics Problem?
- BIGEYE
- · Replies 1 ·
Calculating Reaction Forces in a Plank System: Bill and Dave
- Lavace
- · Replies 3 ·
Determining p and q in Equilibrium
- Lavace
- · Replies 4 ·
Speed of electron into electric/magnetic fields
- shanktank
- · Replies 2 ·
How high does the ball rebound?
- edr2004
- · Replies 5 ·
Is the Period of Centripetal Motion Proportional to the Radius?
- lord_blurg
- · Replies 3 ·
Parallel plate capacitor potential difference and energy when distance increases
- Simon316
- · Replies 4 ·
Three capacitors connected to a battery
- Vedj
- · Replies 1 ·
Question regarding Motion in two or three dimensions.
- nyguy
- · Replies 1 ·
The voltage and current caused by a wave? Does distance matter?
- bsmith
- · Replies 1 ·
Calculating Projectile Acceleration and Barrel Travel Time
- ataglance05
- · Replies 12 ·
Solving Snell's Law Problem: Find Refractive Index at Height h
- zell99
- · Replies 1 ·
340 Hz note is played outdoors. Temperature and wave length
- 8parks11
- · Replies 3 ·
How to Design a Device to Launch an Egg Over Obstacles?
- BassMaster
- · Replies 32 ·
Coefficient of Friction of a olympic skier
- William Bush
- · Replies 10 ·
Removing outliers from projectile motion ramp data
- THE 1
- · Replies 1 ·
Electric field at fourth corner of rectangle with three charges
- kitty9035
- · Replies 3 ·
Cathy's Question: Motor on/off with LDR and Resistor?
- CathyLou
- · Replies 1 ·
Modeling motion with air resistance (integral calculus)
- numba1stunna
- · Replies 2 ·
How Does Solar Wind Affect Earth's Electric Environment?
- Sanjay101
- · Replies 1 ·
General Physics Question - Rod moving about a pivot
- integra2k20
- · Replies 14 ·
How Do You Solve a Kinematic Problem with Time-Varying Acceleration?
- Buddy J.
- · Replies 1 ·
What Are the Electrical Characteristics of the Circuit in Figure 27-40?
- Zonda
- · Replies 1 ·
Period of a Mass on a Spring in Simple Harmonic Motion
- pugfug90
- · Replies 7 ·
Schrodinger's equation and potential energy
- xiankai
- · Replies 1 ·
What is the formula for calculating minimum takeoff speed of a light aircraft?
- Towely
- · Replies 4 ·
Archimedes principle free fall problem
- heidari
- · Replies 2 ·
What Determines the Outcome in an Elastic Collision Between Two Croquet Balls?
- anightlikethis
- · Replies 1 ·
Solving Incline Problem Homework: Find Distance & PE
- kokok
- · Replies 5 ·
Thermodynamic equilibrium and Entropy
- DieCommie
- · Replies 6 ·
Car speed at hilltop where driver barely stays in seat
- harmeet_angel
- · Replies 7 ·
Parabolic motion. air resistance?
- 403036387
- · Replies 19 ·
Roller Coaster, Cosine 'ramp', Exit Velocity?
- jim.nastics
- · Replies 10 ·
How to Solve Velocity Problems in Physics Homework?
- talksabcd
- · Replies 7 ·
Collision problem cant figure it out
- jjf5122
- · Replies 14 ·
Temperature and pressure problem
- abawp
- · Replies 1 ·
Finding centre of gravity of a disc with circular cutout
- clevermartin
- · Replies 5 ·
Deriving equations of motion for a double pendulum with small angle approximation
- zell99
- · Replies 7 ·
Resources for teaching multi-decay chains to first-year students
- big man
- · Replies 4 ·
How Much Work is Done to Change the Circular Path's Radius?
- thedark_master
- · Replies 9 ·
A Rather Simple Freefall Question
- Arepo
- · Replies 5 ·
De Broglie Wavelength of Electron
- amcca064
- · Replies 4 ·
Prove torque equation 2sin^2(theta/2) * cos(theta + beta) = sin (beta)
- UCD2
- · Replies 2 ·
Finding inductance from peak current at 15 kHz with 6V RMS
- dtesselstrom
- · Replies 1 ·
What Is the Magnitude and Angle of Force Applied in Solving a Work Problem?
- highc
- · Replies 18 ·
If the speed of sound is 330 m/s. How high is the cliff?
- galeontiger
- · Replies 6 ·
Thin Film Interference (Interferometer)
- turdferguson
- · Replies 7 ·
Period of Small Amplitude Oscillation for Hoop of Radius 50cm
- yus310
- · Replies 2 ·
Block sliding down circular path on frictionless block
- a9211l
- · Replies 1 ·
Restoring force (negative or positive)
- pugfug90
- · Replies 3 ·
Two objects two differents accelerations
- 67NICK67
- · Replies 3 ·
Find Largest Focal Length Lens for Photo of Poster - 2.79mm
- deenuh20
- · Replies 2 ·
Measuring light intensity with an LDR and diffraction grating
- jimbobjb
- · Replies 1 ·
Calculate Angular Velocity of a Diver in Tuck Position
- thedark_master
- · Replies 2 ·
How High Should the IV Bag Be to Ensure Fluid Flow into the Vein?
- thedark_master
- · Replies 2 ·
What's the UNIT after you take the natural log?
- kingwinner
- · Replies 7 ·
Wave travel along a tensioned rope
- macgirl06
- · Replies 12 ·
Solve Physics 11 Problem: "Did Person Catch Bus?
- 67NICK67
- · Replies 4 ·
Two lightbulbs in parallel and series circuits
- fuschiso
- · Replies 2 ·
Spring extension with hanging mass and friction
- yus310
- · Replies 33 ·
How Does the Right Hand Rule Determine Magnetic North in Solenoids?
- rmarkatos
- · Replies 1 ·
How Does Bulb Brightness Vary in Parallel and Series Circuits?
- fuschiso
- · Replies 1 ·
Entropy and temperature of the system
- PeterPoPS
- · Replies 1 ·
Calculate the acceleration of the block
- raman911
- · Replies 15 ·
Solve Frictionless Table Clay-Bar Impact Problem
- fruitl00p
- · Replies 8 ·
Pressure change 35.1 m below and 34 m above a lake surface
- thedark_master
- · Replies 3 ·
Angles made by angular momentum vector with magnetic field
- Amith2006
- · Replies 2 ·
Why Does a Ball Sink on Water Surface?
- Vagrant
- · Replies 2 ·
Question on Le Chatelier's theory?
- greenfloss
- · Replies 1 ·
Finding Tension in a Suspended Wire with a Force Applied at a Given Point
- Larz31
- · Replies 6 ·
Radius of the path of a charged particle in a mass spectrometer
- BunDa4Th
- · Replies 16 ·
Position of Floating Cylindrical Disk in Water
- thedark_master
- · Replies 2 ·
How Do You Calculate the Frequency of a Mass Oscillating on a Spring?
- bpw91284
- · Replies 3 ·
Work to raise the top coin in a stack and potential energy of the pile
- a seeker
- · Replies 5 ·
Magnitude of charge on oil drop (electric field)
- kbyws37
- · Replies 11 ·
Potential difference in a coaxial cable with line charge density
- brad sue
- · Replies 2 ·
Calculate the number of excess electrons
- Mitchtwitchita
- · Replies 4 ·
Conical pendulum inclination angle comes out greater than 1
- haddow64
- · Replies 12 ·