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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Capacitor in series voltage problem
- terryds
- · Replies 19 ·
Archived How Many Oscillations Until Pendulums of Different Lengths Resynchronize?
- Amith2006
- · Replies 3 ·
Find mass of load that falls off truck
- Andy Salter
- · Replies 11 ·
What is the Direction of the B Field from Electron Motion?
- PhysKid45
- · Replies 4 ·
Find ELectric field in these regions of a spherical shell
- grandpa2390
- · Replies 7 ·
Circular motion object falling in the circle
- Khunpol Jermsiri
- · Replies 3 ·
Electric potential at the bottom of a ring?
- lz975545
- · Replies 1 ·
Meissner effect and future application to the hoverboard -- Ideas?
- Oussama
- · Replies 5 ·
A 3rd method of finding wavelength in a double slit
- LionLieOn
- · Replies 6 ·
Concepts regarding Electric Potentials of Spheres
- WWCY
- · Replies 8 ·
Maximizing Electrostatic Force between Two Point Charges
- Vishakha
- · Replies 14 ·
Newton's Second Law -- Accelerations in a pulley system
- Jonathan Schierl
- · Replies 8 ·
Electrostatic Potential Energy stored outside a shell.
- cheapstrike
- · Replies 1 ·
Electric Field -- Rod from far away
- Arman777
- · Replies 11 ·
Magnitude of acceleration of boxes -- is this method correct?
- Rijad Hadzic
- · Replies 7 ·
Calculating Input Voltage of a Step Down Transformer
- ilovejava
- · Replies 5 ·
The point at which 2 vehicles meet
- Hannah Wallace
- · Replies 22 ·
Finding an expression for Electric Potential?
- PolarBee
- · Replies 5 ·
How to calculate the average with uncertainties?
- Tyler S
- · Replies 2 ·
Mechanical wave reflection at a boundary
- Toby_phys
- · Replies 1 ·
What will be the weighing machine's reading?
- Ravi Singh choudhary
- · Replies 9 ·
Rotational Inertia of Solid Sphere Suspended from Ceiling
- AlexH
- · Replies 1 ·
What Causes Discrepancies in Calculating Initial Angular Velocity?
- AlexH
- · Replies 2 ·
Electric Field-Dimension Analysis
- Arman777
- · Replies 2 ·
Projectile Motion/ Explosion Mid air
- RED119
- · Replies 6 ·
Find ratio of diameter of two Cylindrical Resistors?
- jlmccart03
- · Replies 5 ·
Maximum temperature reached by gas in expansion
- timetraveller123
- · Replies 27 ·
Calculating EMF and Internal Resistance: A Practical Guide
- Gustavs1337
- · Replies 7 ·
Optimizing Mass for Vertical Rod Buoyancy in Unknown Fluid
- timetraveller123
- · Replies 29 ·
Calculating Internal Resistance: Methods A and B
- Adriano25
- · Replies 13 ·
Total energy within a specific region.
- jlmccart03
- · Replies 12 ·
How does a buffer amp not remove all loading effect?
- itzernie
- · Replies 1 ·
Dipole in a nonuniform electric field problem
- BrainMan
- · Replies 4 ·
When the truck is at rest, will the crate also be at rest?
- javii
- · Replies 4 ·
Sound & Music - Ptolemy Reduced Frequency
- Torrie
- · Replies 1 ·
Parallel plate capacitor: Proton vs Electron
- Kmol6
- · Replies 6 ·
Which choice do I choose from the quadratic?
- Rijad Hadzic
- · Replies 6 ·
Single slit with minimum uncertainty
- HelpPlease27
- · Replies 10 ·
What is the Method for Finding the Magnitude of a Complex Vector?
- David932
- · Replies 6 ·
Quick clarification/question on Electric Field at a point
- Pablo1122
- · Replies 4 ·
Resultant Electric field between charges
- williamhannah
- · Replies 5 ·
A Newton's law question which is too hard for me
- tze liu
- · Replies 21 ·
Entropy Change in Reversible vs Irreversible Gas Expansions
- Silviu
- · Replies 7 ·
Mass sliding on frictionless inclined plane compresses a spring
- Nacho Verdugo
- · Replies 7 ·
A quick and simple question/clarification on circuits
- Pablo1122
- · Replies 11 ·
Newton's Second law: Tension on Cable
- aatari
- · Replies 9 ·
Relative motion problem with airplane and wind velocity
- Stormblessed
- · Replies 5 ·
Efficient Heat Engine and Final Temperature Calculation
- danyull
- · Replies 1 ·
Lorentz Transformation and position of the object
- Blue Kangaroo
- · Replies 3 ·
Pressure variation with sound waves equation
- llatosz
- · Replies 7 ·
How is Work Related to Velocity?
- Eeeff
- · Replies 11 ·
What is the speed of bomber when it releases its cargo
- Rijad Hadzic
- · Replies 10 ·
Resistance, cross-sectional area of long coated wire
- Cocoleia
- · Replies 6 ·
Partial Differential Equation in Special Relativity
- Nerrad
- · Replies 6 ·
Energy use, conductive-convective layers and air films
- kokodile
- · Replies 1 ·
Calculate the diameter of a baby's head using ultrasound speed
- Littlegirloud
- · Replies 6 ·
Deriving an expression for the energy required to separate charges
- Taylor_1989
- · Replies 1 ·
Newton's Second law: Pushing the box
- aatari
- · Replies 6 ·
Is the API Hydrocarbon Emission Formula Dimensionally Consistent?
- popoff
- · Replies 2 ·
How Do You Calculate the Laplacian in Polar Coordinates?
- davon806
- · Replies 1 ·
Current as a function of time in an RC circuit
- terryds
- · Replies 22 ·
Is the force on a dipole parallel or perpendicular to the electric field?
- Iron_Man_123
- · Replies 1 ·
Forces between the dipole and a point charge
- Albi Mema
- · Replies 1 ·
Extension in a Spring: Which Mass Causes Greater Extension?
- Ameya Darshan
- · Replies 22 ·
Efficiency and Law of conservation for a skateboarder in a skate park
- pageb
- · Replies 5 ·
Why does work have the wrong units?
- Vitani11
- · Replies 8 ·
Motion in a Central Gravitational Force
- Macykc2
- · Replies 1 ·
Electric Field Calculation (Square Wire)
- Arman777
- · Replies 11 ·
Is nitrogen at 27˚C and 100 kPa an ideal gas?
- tommyninetwo
- · Replies 17 ·
Is Mass the Same as Weight in Truss Calculations?
- dlacombe13
- · Replies 3 ·
What Is the Acceleration at 55 km/h in a Sharp Monaco GP Turn?
- Rijad Hadzic
- · Replies 11 ·
Electric field intensity on thin electric sheets
- Cocoleia
- · Replies 1 ·
Finding electric potential where electric field is zero
- cmkluza
- · Replies 3 ·
Compton Scattering Angle Calculation
- HelpPlease27
- · Replies 13 ·
Acceleration of couch pushed by non-horizontal force
- John A
- · Replies 20 ·
Torque to lift object by cable on a drum accelerating
- swotty
- · Replies 8 ·
What Is the Maximum Induced EMF in the Inductor?
- Asmaa Mohammad
- · Replies 8 ·
Elastic Collision in two dimensions question
- iwatchcredits
- · Replies 6 ·
Using Capacitors on Breadboards: Tips and Tricks for Beginners
- Taniaz
- · Replies 6 ·
Electric field, surface charge density
- Cocoleia
- · Replies 1 ·
Derivative of Planck's spectral distribution
- CricK0es
- · Replies 2 ·
What is the motivation for using a ceiling fan in a high ceiling?
- JOSEPH JAMES
- · Replies 2 ·
What is the Relationship Between Kinetic Energy and Momentum?
- zeldaspurpose
- · Replies 1 ·
Circuit is constructed with six resistors and two batteries
- PhysicsNo
- · Replies 2 ·
Logarithm word problem, is there enough info?
- late347
- · Replies 12 ·
What is the tension in the strings when the slender bar begins oscillating
- Ayenyen
- · Replies 2 ·
Centripetal Force Problem with Tension on an Unknown Planet
- Jimmy5764
- · Replies 3 ·
Thermodynamics Change in Internal Energy?
- Ricardeo Xavier
- · Replies 1 ·
Electron Scattering and Bragg's law
- jasonchiang97
- · Replies 1 ·
Why does the current take this path?
- AXRY
- · Replies 4 ·
Continuous Distribution of Charges Problem
- BrainMan
- · Replies 8 ·
Torque and rotation around a fixed point
- spacediver
- · Replies 18 ·
Projectile Problem: Marble falls from Desk
- aatari
- · Replies 19 ·
Angular Momentum Question concerning a Merry Go Round
- WilkinsD
- · Replies 44 ·
Calculating Forces and Equilibrium of a Drawbridge
- hndalama
- · Replies 5 ·
Calculating Required Force for Pushing Metal Blocks | Static Friction Help
- Lily131313
- · Replies 19 ·
Insane Dimensional Analysis Problem
- cytochrome
- · Replies 4 ·
Sign of differential length in work
- jonjacson
- · Replies 17 ·
Frequency domain and mesh currents
- Cocoleia
- · Replies 9 ·
How to Calculate the X-Component of the Magnetic Moment in a Rectangular Loop?
- marchcha
- · Replies 3 ·