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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Electron and proton between two plates
- cseil
- · Replies 5 ·
Why V₁ + V₂ ≠ Vo for two capacitors in series after discharge
- Hijaz Aslam
- · Replies 6 ·
Work and Energy Problem. Why not include PE?
- Naomi
- · Replies 8 ·
Finding gravity from a pendulum that oscillates 24 times per minute
- Kaneki
- · Replies 14 ·
Spring-mass oscillation when support falls freely
- Rmehtany
- · Replies 9 ·
Projectile Motion Using Conservation of Energy
- JoeTheKid
- · Replies 1 ·
Why treat two hand forces as one normal force in static equilibrium
- Speedking96
- · Replies 5 ·
[Basic Velocity] Finding velocity with x and y distances?
- physxaffinity
- · Replies 4 ·
Magnetic field for coaxial cable
- NYK
- · Replies 25 ·
Determining the speed of sound in air
- Freefeynman123
- · Replies 1 ·
Two very long parallel wires 1.0m apart lie on the ground
- superflybob
- · Replies 1 ·
Finding internal resistance from 1/I vs R graph
- iamnotlegend
- · Replies 8 ·
Calculate electric current in a resistor
- nowayn
- · Replies 6 ·
Regarding double well potential
- peripatein
- · Replies 10 ·
What does the potential energy principle -dU/dx = F mean?
- phy301114
- · Replies 5 ·
Calculating the Speed of a Pendulum Bob Using Energy Equations
- Vanessa Avila
- · Replies 6 ·
Electric field on grounded plane
- Andrew774
- · Replies 1 ·
Stability: Leaning Horse against a Wall
- Jazz
- · Replies 4 ·
Example Problem in the book, why is tension ignored?
- jzhu
- · Replies 4 ·
Heat Equation Boundary Conditions
- Vector1962
- · Replies 14 ·
Angle Theta for Block 1 Sliding up an Incline
- Thegiver431
- · Replies 4 ·
How much time will it take to heat water
- cycrups
- · Replies 1 ·
Equate Kinetic Friction to Rotational Energy?
- Gear Head
- · Replies 5 ·
How Far Will the Ice Cube Travel Up the Slope?
- Ritzycat
- · Replies 4 ·
Sam, Whose mass is 75kg(Work Energy Problem)
- Naomi
- · Replies 3 ·
Electric Fields and charged particles
- TheExibo
- · Replies 11 ·
Projectile Motion: Calculating Initial Speed for Arrow at 30° Angle
- sarabee
- · Replies 4 ·
How Do You Calculate the Suspended Mass M for Constant Velocity on an Incline?
- gymnast2121
- · Replies 3 ·
Plane flying northeast, southeast, southwest, northwest
- rmalski
- · Replies 10 ·
How Does Sand Transfer Affect the Speed of a Freight Car?
- geoffrey159
- · Replies 2 ·
Voltage drop over an independent current source?
- nickadams
- · Replies 2 ·
Circular Motion and Gravitation of tether ball
- Sarah Lee
- · Replies 15 ·
How do I find the truck's acceleration after the chain breaks?
- Thegiver431
- · Replies 10 ·
Find Range of V0 for Particle in Potential
- peripatein
- · Replies 1 ·
Understanding Gravitational Force and Solving Related Problems
- Maged Saeed
- · Replies 9 ·
Acceleration, Uniform Ball on Incline
- Phys student
- · Replies 13 ·
Physics Car Project: Honors Physics Student Seeks Ideas & Help
- Joe Nathan
- · Replies 24 ·
Dynamics Problem? - reason for the cases described
- PhysicStud01
- · Replies 7 ·
Voltage change to go from 60-W to 50-W?
- DennisDoesPhys.
- · Replies 1 ·
Current Source in Parallel with Short Circuit
- nickadams
- · Replies 5 ·
Was Pete Speeding When the Fatal Collision Occurred?
- HSkiddave
- · Replies 25 ·
Calculating the moment of inertia of a filled cylinder
- Thynazgul
- · Replies 3 ·
Physics Work, Force, Energy problem
- Quinton Lutz
- · Replies 5 ·
Electric field at point Gauss law
- Pual Black
- · Replies 14 ·
Integration constants, gravitational potential of sphere
- Vir
- · Replies 20 ·
How Is the Acceleration of a Rocket Calculated When a Bolt Falls Off?
- Ritzycat
- · Replies 3 ·
Where is the equilibrium point between charges q and 3q?
- TheExibo
- · Replies 2 ·
Why is heat path dependent?
- hiba fatima
- · Replies 6 ·
Find Length of Closed Pipe for Equal Frequency
- diracdelta
- · Replies 3 ·
When Do Rocket Cars with Different Accelerations Meet?
- Ritzycat
- · Replies 3 ·
Why factor only rotational energy in rolling ball height problem
- Speedking96
- · Replies 3 ·
Skier traveling uphill with and without friction
- m_eghan
- · Replies 37 ·
What's the Mean Free Path of a Gas Atom?
- alizeid
- · Replies 1 ·
Calculating the value of R in a circuit
- cseil
- · Replies 7 ·
Angular Momentum of a Particle Confusion
- Speedking96
- · Replies 9 ·
What Is the Tension in the String Connecting Two Blocks of Equal Mass?
- astrophysics12
- · Replies 4 ·
Angular acceleration of a yo-yo pulled with constant force
- ShilpaM
- · Replies 1 ·
How Is Object Distance Calculated in Mirror and Lens Equations?
- mikil100
- · Replies 4 ·
Ideal gas cycle: net heat and work from PV diagram
- athula kumara
- · Replies 2 ·
Why they don't give me the same answer? dynamics of uniform circular motion
- Andrax
- · Replies 3 ·
Force, torque with a motor + a wheel + a belt
- Cri85
- · Replies 6 ·
Differential equation for unbalanced rotating force
- Dustinsfl
- · Replies 1 ·
Mouse jumping onto exercise wheel: angular velocity and max height
- burnst14
- · Replies 3 ·
Deriving solenoid magnetic field from coil formula
- Prashasti
- · Replies 5 ·
Magnetism, Credit-Card magnetic strips
- Nnk
- · Replies 2 ·
Kinematics Equations and a Cliff
- MarchON
- · Replies 31 ·
How Does Surface Tension Affect Pressure Between Non-Wetting Plates?
- Aias
- · Replies 1 ·
Will increasing the energy of a string increase the velocity
- HHH
- · Replies 1 ·
Is there a guide for the properties of ideal gasses?
- PhyIsOhSoHard
- · Replies 3 ·
Why is momentum conserved for a mass-spring collision?
- ZARATHUSTRA
- · Replies 3 ·
What is the Tension in Rope Two?
- rsrunner
- · Replies 22 ·
Finding the Angle between Thread and Wall for Sphere A
- Andrea Assas
- · Replies 1 ·
Angular Momentum: Rotating Object
- Speedking96
- · Replies 4 ·
Adiabatic process of monatomic gas problem
- athula kumara
- · Replies 3 ·
How to Calculate Energy Flux in Traveling Waves with Different Densities?
- diracdelta
- · Replies 6 ·
Steam Piston-Cylinder Device: Work and Heat Transfer Calculation
- benk11
- · Replies 1 ·
Maxima and Minima, Rod Rotating on a Surface With Friction
- Phys student
- · Replies 9 ·
Is gravity a restorative force in oscillations?
- Elfrid Payton
- · Replies 3 ·
Induced Current problem from review
- Boris_The_Red
- · Replies 1 ·
What Is the Difference Between Torque and Moment in Physics?
- princejan7
- · Replies 2 ·
Time dilation factor between two spaceships at 1.2×10^8 m/s
- mikil100
- · Replies 1 ·
How do impulses compare in collisions between unequal masses?
- Soniteflash
- · Replies 1 ·
Capacity of a Barge: 10.56 Million kg Coal
- Mitchell Powell
- · Replies 5 ·
Torque problem -- designating center of mass as pivot point
- bijou1
- · Replies 9 ·
Solving the Fluids Straw Problem: Compute Water Fraction in Ideal Gas Model
- whatislifehue
- · Replies 1 ·
Force components of two strings tied to a painting at 45 degree angles
- Mr Davis 97
- · Replies 2 ·
Motion of c.o.m. (kleppner 3.7)
- geoffrey159
- · Replies 3 ·
Checking if Momentum Operator is Hermitian - Integration
- MPKU
- · Replies 1 ·
How Do Two Connected Discs with Masses Affect Angular Acceleration?
- lmao2plates
- · Replies 15 ·
How Long Does It Take an Electron to Travel Through a Copper Wire?
- cseil
- · Replies 1 ·
Does the relativistic rocket paradox depend on signal delay?
- slevesque
- · Replies 11 ·
Max stretch and amplitude of a mass dropped onto a vertical spring
- Quantum Fizzics
- · Replies 3 ·
Total electric potential energy of equilateral triangle
- Herjap
- · Replies 1 ·
How Far Can a Person Stand on a Plank Without It Tipping?
- gcombina
- · Replies 3 ·
Escape from gravitational field
- hafiz ns
- · Replies 2 ·
Atwood Machine Lab: Graphing and Finding Moment of Inertia | Homework Help
- rttackle
- · Replies 6 ·
Fundamental kinematics question
- abram
- · Replies 11 ·
In which direction does the friction on the wheel go?
- PhyIsOhSoHard
- · Replies 5 ·
Kinetics Problem: Non-constant force (calculus)
- Lola Luck
- · Replies 4 ·
Finding the value of k (spring constant)
- p0ps1c1e
- · Replies 4 ·