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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Length of a Stick Moving at Speed v in an Angle
- Tony11235
- · Replies 2 ·
Instantaneous Decay rate per unit Volume
- Polarbear
- · Replies 1 ·
Image formation in flat, converging and diverging mirrors
- intimidckfan
- · Replies 1 ·
Question on Rotational Dynamics
- alamin
- · Replies 5 ·
E Field caused by infinite plate
- WarpDrive
- · Replies 1 ·
Time to Get Away from Avalanache
- atse1900
- · Replies 2 ·
Can Compressions and Nodes Be Compared in Wave Calculations?
- oooo
- · Replies 1 ·
Rotational Equilibrium and Dynamics -
- raconteur
- · Replies 2 ·
Min and max magnitude on pointlike charges
- Elysium
- · Replies 10 ·
Thermodynamics - how much heat needed to raise temperature of a lake
- sap_54
- · Replies 1 ·
Calculating Equilibrium Height of 2 Cylinders
- JSBeckton
- · Replies 2 ·
Problem involving power, mass, incline, and finding a max. velocity
- _chris_
- · Replies 2 ·
Spring constant of a charged DNA molecule
- mpm
- · Replies 1 ·
Why does an ice cube melting not change water level but an anchor does?
- yc716
- · Replies 3 ·
Hi everybody,I am having a lot of trouble in my thermodynamics
- KoGs
- · Replies 2 ·
Finding electron flow when charge passes through a wire
- hshphyss
- · Replies 11 ·
How train is travelling through a curve?
- aneeshk
- · Replies 1 ·
How Does Fluid Dynamics Affect Pressure and Flow in Constricted Pipes?
- Jeann25
- · Replies 1 ·
Where should q3 be placed on the x-axis for net force to be zero?
- leon1127
- · Replies 7 ·
Large mass collision momentum problem
- Robadams
- · Replies 5 ·
Two balls meeting at height h/2
- Robby11
- · Replies 3 ·
Ok, how should I go about this one?
- matt85
- · Replies 5 ·
HW question: electricity and magnetism
- matt85
- · Replies 2 ·
Explain Difference Red/Green Light Single/Double Slit
- F.B
- · Replies 2 ·
Electrostatic force on nonlinear charges
- bigslowy
- · Replies 1 ·
Electric force between K+ and Cl- ions across a 7.9 nm membrane
- matt85
- · Replies 5 ·
Minimum Pulley Diameter for 1.5mm Bike Brake Cable
- KevD
- · Replies 4 ·
What is the relative velocity of the airplane to the surface
- balletprincess34
- · Replies 16 ·
Two ideal gases reaching equilibrium through a movable diathermal piston
- KoGs
- · Replies 5 ·
Understanding Momentum: Solving Problems with the FT=MV Formula
- Zuloft
- · Replies 5 ·
Calculating Time of Force Application in Non-Uniform Motion
- neoking77
- · Replies 3 ·
Double Slit: Find Longest Wavelength
- SwAnK
- · Replies 4 ·
How do I express Z and R unit vectors in different coordinate systems?
- zekester
- · Replies 1 ·
Is E = E(max)cos(kx-wt) a Solution to Maxwell's Derived Equation?
- maon
- · Replies 9 ·
How Do You Calculate the Position of Two Falling Stones with a Time Delay?
- scavok
- · Replies 3 ·
Finding initial velocity of golf ball launched at 20 degrees
- simple123
- · Replies 3 ·
How Is Electric Force Balancing a Suspended Charged Ball in a Capacitor?
- stuplato
- · Replies 1 ·
Speed of point on tire and lift-to-weight ratio in circular motion
- Harmony
- · Replies 3 ·
Calculating Fluid Eflux: The Impact of a Cylindrical Tank on a Platform
- alamin
- · Replies 2 ·
Far out free response concerning motion
- DaMastaofFisix
- · Replies 2 ·
How Do You Calculate Charge Magnitude Using Coulomb's Law?
- HobieDude16
- · Replies 1 ·
Calculating Current in a Series Circuit with Inductance and Resistance
- alamin
- · Replies 1 ·
How many buses can the motorcycle jump at 18 degrees and 33.5 m/s?
- gsr_4life
- · Replies 3 ·
Ball lagging behind falling board when theta < 35.3 degrees
- es19
- · Replies 1 ·
Energy Questions? Solve Problems Now
- yosup231
- · Replies 17 ·
4kg and 15kg collision momentum problem
- Zuloft
- · Replies 1 ·
Why is a pushup harder with hands elevated on a step?
- fedude
- · Replies 6 ·
Electric Fields and vertical deflection
- nick85
- · Replies 3 ·
Coloumbs Laws and electric fields
- SS2006
- · Replies 4 ·
What Is the Derivative of This Gravitational Potential Energy Function?
- dvvz2006
- · Replies 1 ·
How Long Does a Jumping Fish Take to Pass a Point Above Water?
- CaveatLector
- · Replies 16 ·
I'm sure your're sick of me by now, but heres my question
- sabre252
- · Replies 3 ·
Coefficient of friction for sled pulled at 40 degrees
- blockitoff
- · Replies 24 ·
Interference of Light: Explaining Transparency & Opacity
- SwAnK
- · Replies 3 ·
Calculate the speed of each particle
- hshphyss
- · Replies 1 ·
Is the Torque Calculation in the Picture Correct?
- Lorens
- · Replies 1 ·
Electrical shock from airplane toilet door and car drag chain
- wasdwasd
- · Replies 2 ·
Cat chasing mouse along y-axis at twice the speed
- iceman632
- · Replies 3 ·
Two masses on a spring with initial vertical velocity
- efebest
- · Replies 1 ·
Problem to understand how the power is distributed
- Lorens
- · Replies 5 ·
Thermodynamics and Gas expansion
- InfernalAsylum
- · Replies 1 ·
Ctrostatics, Gauss’s Law, and Potential
- Shay10825
- · Replies 5 ·
How Do Tractor Forces Combine When Pulling at an Angle?
- balletprincess34
- · Replies 7 ·
Calculate Electron Charge in 0.6 kg of Water
- Punchlinegirl
- · Replies 2 ·
Can Teenagers Pick Up Game Diamonds Faster Than Adults?
- Pires
- · Replies 1 ·
Lecture notes on moment and torque
- Werg22
- · Replies 3 ·
Unravelling the History of Sin, Tan and Cos
- runicle
- · Replies 1 ·
Calculating Tension in a Two-Block System
- sweet877
- · Replies 2 ·
Using Newton's law of cooling to estimate time of death
- an_mui
- · Replies 4 ·
What is the formula for the 3D trajectory of a curving ball?
- mariokan
- · Replies 2 ·
Figure Eight Trajectories for Spacecraft: Potential Energy Calculation
- dvvz2006
- · Replies 1 ·
Finding current i2 in multi-loop circuit with resistors and current source
- mr_coffee
- · Replies 2 ·
Mass of one water molecule and molecules in Earth's oceans
- frankfjf
- · Replies 1 ·
Some electric charge and force questions on how to set them up
- kevinlikesphysics
- · Replies 2 ·
Why does a pencil reflect infinitely between two mirrors and get darker?
- intimidckfan
- · Replies 1 ·
Calculating Flow Rate in Syringe
- Rizer
- · Replies 5 ·
Clifford algebras in physics applications
- Plat00n
- · Replies 2 ·
Electrostatic Equillibrium Question
- vg19
- · Replies 5 ·
Simple Beam Problem: Solving for Vertical Forces and Symmetry in Mechanics
- Demian^^
- · Replies 3 ·
What would the acceleration-time graph of throwing up a ball look like?
- opticaltempest
- · Replies 1 ·
Calculating Water Friction for Dropped Objects
- waterfriction
- · Replies 5 ·
Calculating Rotational Kinetic Energy with Unknown Radius and Mass
- hippolyta2078795
- · Replies 2 ·
Finding vectors B and C given A and the constraint A+B+C=0
- kooaznboi1088
- · Replies 7 ·
Kinetic energy of a rotating rod-particle link on a spinning platform
- Benny
- · Replies 4 ·
Having a problem with a fairly early Physics with Calculus 1 problem
- frankfjf
- · Replies 4 ·
Find the magnitude of the electrostatic force
- DeadxBunny
- · Replies 1 ·
Does a hand crank have the same angular velocity as its axle?
- hippolyta2078795
- · Replies 1 ·
Monarch butterfly migration project: physics and chemistry angles
- zee_girl
- · Replies 12 ·
Calculating Work Required to Submerge Gas at Constant Temperature and Pressure
- [imagine]
- · Replies 3 ·
Understanding Phase Velocity in Optical Fibers
- dervast
- · Replies 4 ·
Force and change in momentum with time
- chowyo123
- · Replies 5 ·
Quantum - potential difference problem.
- Physics103
- · Replies 2 ·
Calculating Equilibrium Position for a Particle with Given Potential Energy V(x)
- square_imp
- · Replies 9 ·
How does the right hand rule work with a coil around a magnet?
- runicle
- · Replies 3 ·
Special Relativity: Finding Particle Speed
- Geoff
- · Replies 12 ·
How Is Work Calculated When Stretching a String into an Equilateral Triangle?
- GregA
- · Replies 1 ·
What is the solution to the Ferry Boat HW Problem?
- flyingdonkey21
- · Replies 8 ·
What happens to energy levels when electrons collide with an atom?
- Millan
- · Replies 3 ·
How Does Charge Density Influence Electric Field and Acceleration?
- industry86
- · Replies 4 ·