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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Proof that d/dx is anti-hermitian by integration by parts
- HotMintea
- · Replies 7 ·
Hanging accordian balanced by opposing moments
- xiphmont
- · Replies 1 ·
Why momentum and energy conservation differ in ballistic pendulum stages
- IKonquer
- · Replies 1 ·
Relating portions of Poiseille's Law to concepts of pressure/radius
- oddjobmj
- · Replies 4 ·
Two people of differing masses on a sheet of ice
- aCab
- · Replies 1 ·
Bullet and block collision with spring compression
- lillybeans
- · Replies 5 ·
Finding the E-field of a mass hanging from a string
- aximwolf
- · Replies 2 ·
What are the conditions for different types of damping in oscillations?
- kraigandrews
- · Replies 1 ·
How Does a Cuckoo Clock Calculate Its Quality Factor and Battery Life?
- kraigandrews
- · Replies 1 ·
Resultant Force: Something I am messing up on in calculation - ?
- nukeman
- · Replies 3 ·
Which, if any, is/are valid forms of the Second Law of Thermodynamics?
- ss883
- · Replies 1 ·
No, that is not correct. The correct answer is F_t(y) = [m(gL - gy)]/L.
- ahhgidaa
- · Replies 3 ·
Initial separation of two charged particles flying apart
- Vettel
- · Replies 2 ·
Finding coordinates for points X and Y given vector XY
- jessbrewer
- · Replies 1 ·
Finding angle to reduce friction
- maff is tuff
- · Replies 8 ·
What is the difference between induction and polarization?
- IKonquer
- · Replies 6 ·
Induced current in expanding metal ring
- arl146
- · Replies 3 ·
How Does an Elevator's Acceleration Affect Spring Balance Readings?
- AlchemistK
- · Replies 1 ·
Equation for a floating solid sphere
- Grand
- · Replies 7 ·
Calculating Beat Frequencies in Identical Strings with Varying Lengths
- wolves5
- · Replies 6 ·
Momentum of colliding billard balls
- ElevatorNinja
- · Replies 1 ·
Package sliding down a round surface
- Femme_physics
- · Replies 35 ·
Finding the Velocity of the Third Piece after an Explosion
- ElevatorNinja
- · Replies 1 ·
What did I do wrong with these vectors?
- Newphysicsguy
- · Replies 4 ·
Probability inside finite square well
- kraigandrews
- · Replies 2 ·
Questions on the different types of heat transfer
- Kalix
- · Replies 2 ·
Angle between cube diagonal and face diagonal vectors
- jrevard
- · Replies 1 ·
Mechanics problem, mass sliding over a sphere
- fluidistic
- · Replies 10 ·
Theoretical electrodynamic cycle 1
- Ambforc
- · Replies 7 ·
Superposition problem - stuck at this step
- PainterGuy
- · Replies 2 ·
Calculating Tension of a String Suspended Ball
- yjk91
- · Replies 2 ·
Can it be easier to cycle uphill?
- Breakout Hit
- · Replies 7 ·
Where did I go wrong while solving for R_L?
- PainterGuy
- · Replies 4 ·
Find acceleration? Are two solution possible?
- CICCI_2011
- · Replies 8 ·
Why Does Terminal a Show Negative Potential in This Circuit Analysis?
- PainterGuy
- · Replies 8 ·
Centripetal Acceleration of a satellite above a planet of the Earth's radius.
- mogsplanet
- · Replies 4 ·
Non-uniform Inertia of a Cylinder: I = (3MR^3)/5
- LASmith
- · Replies 3 ·
How does ΔA=-integral(PdV) relate to the general equation dA=dU-TdS?
- sparkle123
- · Replies 4 ·
Solving Dynamics of Rigid Bodies with Connected Loads and Inclined Forces
- CICCI_2011
- · Replies 1 ·
How do you calculate the enrgy required to maintain a given thrust?
- kitna paisa
- · Replies 5 ·
Understanding Dimensional Analysis and Deriving M = L^3 T^-2 for Mass
- HotMintea
- · Replies 2 ·
Electrostatic force between sodium ion and a chloride ion
- yjk91
- · Replies 3 ·
How Much Work to Stretch a Spring 4 cm from Equilibrium?
- flyingpig
- · Replies 35 ·
Why is the E-field inside a conductor zero?
- flyingpig
- · Replies 142 ·
Projectile Motion Golf Question
- michaeljf
- · Replies 4 ·
Max distance for wheel to slide on shaft with friction coefficient μ
- Femme_physics
- · Replies 14 ·
What Is the Net Force on the -2 mC Charge in a Triangular Charge Configuration?
- yjk91
- · Replies 1 ·
Calculating Velocity and Direction at Height of 120m
- stupif
- · Replies 1 ·
Superposition of electric field
- yjk91
- · Replies 8 ·
Average power when capacitor discharges
- rmusial91
- · Replies 1 ·
Irrev. adiabatic process entropy >0 or =0?
- sparkle123
- · Replies 3 ·
DG is for isothermal thus dH =0?
- sparkle123
- · Replies 4 ·
Moving a charge/electrostatic force
- ajmCane22
- · Replies 2 ·
What are audio sampling signals and what is the required minimum sampling rate?
- Googl
- · Replies 4 ·
Projectile motion of mortar round problem
- jjones1573
- · Replies 3 ·
How to Use Nodal Analysis to Find Vth in a Circuit
- PainterGuy
- · Replies 2 ·
How to proceed with nortonization?
- PainterGuy
- · Replies 2 ·
Can a human survive a 30m jump into water, and what forces cause injury?
- flyingpig
- · Replies 7 ·
Calculating the threshold ionization intensity for hydrogen gas.
- Cypher49
- · Replies 5 ·
Calculating Force and Motion on an Inclined Plane
- Femme_physics
- · Replies 45 ·
How can I find the eigenvectors and basis for the eigenspace of a given matrix?
- jjones1573
- · Replies 7 ·
Estimating moment of inertia without calculations
- Femme_physics
- · Replies 9 ·
Capacitor and Mechanics question, IPhO 2004
- Mantaray
- · Replies 4 ·
Calculating Potential Difference in Series Capacitor Circuit
- flyingpig
- · Replies 28 ·
Proving an equation using Properties of Determinants
- harshakantha
- · Replies 2 ·
Radius of curvature of a Projectile
- konichiwa2x
- · Replies 12 ·
Projectile motion of a thrown object
- stupif
- · Replies 18 ·
Solving vectors using component method
- yety124
- · Replies 3 ·
Satellite velocity and altitude for 12-hour retrograde orbit
- maff is tuff
- · Replies 4 ·
How to find angle between two inclined plane mirrors?
- kush03
- · Replies 4 ·
Projectile/ Trajectory equation
- articulate
- · Replies 3 ·
Kinda embarrassing to ask about setting up this simple kinematics eqtns
- flyingpig
- · Replies 10 ·
Perfectly Elastic Collision (Easy, just confusing)
- ForrestFire
- · Replies 2 ·
How Does an Insulating Sphere Affect Electric Field Distribution?
- Leeoku
- · Replies 1 ·
Finding the amplitude of a pressure wave
- Patdon10
- · Replies 1 ·
Finding Constructive Interference
- Patdon10
- · Replies 1 ·
Maximizing Mass Motion with Minimal Hand Movement
- wolves5
- · Replies 1 ·
Box oscillating with x = 4.4 cos(29t): position at 2 seconds and time between positions
- wolves5
- · Replies 16 ·
Finding freqency from 2 insturments playing together
- Patdon10
- · Replies 1 ·
Dimensions of temperature and charge in terms of M, L and T
- HotMintea
- · Replies 16 ·
Hydrostatic Pressure - Theoretical Scenario
- EnquiringMind
- · Replies 1 ·
I need the solution for the 3 important problems
- abdallah306
- · Replies 6 ·
Some questions related to work,energy and momentum
- shemer77
- · Replies 9 ·
Physics paper topic for undergraduate level
- predentalgirl1
- · Replies 3 ·
Acceleration of Hot Air Balloon
- armolinasf
- · Replies 1 ·
Calculating electric field given velocity and magnetic field
- RKOwens4
- · Replies 4 ·
Why Does Grounding Affect Current Flow in a Circuit?
- joej24
- · Replies 17 ·
Tension In a string Second Harmonic
- Punkyc7
- · Replies 8 ·
Finding tension in rope pulling a 30kg box at constant speed with friction
- dalcde
- · Replies 3 ·
New to 11 Physics: Calculate Ferry Boat Velocity, Time, and Displacement
- myjackie
- · Replies 4 ·
Why Does Current Direction Affect Voltage Sign in KVL Analysis?
- PainterGuy
- · Replies 3 ·
Maximum kinetic energy of a pendulum
- jforce93
- · Replies 1 ·
How Do You Calculate Speed and Angular Acceleration in Rigid Body Kinematics?
- CICCI_2011
- · Replies 10 ·
Transverse Wave Velocity (speed)
- paul11273
- · Replies 7 ·
Show EM Wave equation invariant under a Lorentz Transformation
- Antic_Hay
- · Replies 3 ·
Horizon distance and observers altitude problem
- trina1990
- · Replies 3 ·
What is the magnetic field strength on Earth's surface at either pole?
- tnutty
- · Replies 2 ·
Calculating current in a loop, given torque and magn. field
- RKOwens4
- · Replies 5 ·
How Does Energy Conversion Affect a Trolley's Movement on Different Elevations?
- access
- · Replies 9 ·
What is not essential for simple harmonic motion?
- silent10
- · Replies 27 ·