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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Conservation of momentum with unknown angles
- Chrismiss
- · Replies 1 ·
Phase of current and voltage in LCR network
- Froskoy
- · Replies 2 ·
Hydrostatic pressure in the Bernoulli Equation
- JJBladester
- · Replies 1 ·
Elastic Momentum and Convervation of momentum questions
- ccll
- · Replies 1 ·
Calculating Coefficient of Friction In the System
- junkie_ball
- · Replies 2 ·
Two soap bubbles coalesce, what is the surface tension?
- Quantum Mind
- · Replies 3 ·
Magnetic Field in a rectangular toroid
- caljuice
- · Replies 2 ·
Angular frequency of a pendulum
- dlp211
- · Replies 8 ·
Are Resistors in Parallel if Another Resistor is Between Them?
- eurekameh
- · Replies 3 ·
Calculating Induced Current in a Solenoid-Loop Circuit
- geostudent
- · Replies 1 ·
What is the angular acceleration of a falling rod with two attached balls?
- zarentina
- · Replies 8 ·
Why Use Sin 53° Instead of Sin 37° for Torque Calculation?
- PeachBanana
- · Replies 3 ·
Electric Potential Energy of a Charge Distribution
- HarleyM
- · Replies 3 ·
What Is the Velocity Change of a Fighter Plane in Horizontal Circular Motion?
- nesan
- · Replies 3 ·
How long will it take to fill a tank?
- ScienceGeek24
- · Replies 10 ·
Energy Dissipated in Loop (Magnetic Field)-
- The Head
- · Replies 2 ·
How Do You Calculate the Force Between Children on Ice?
- AliciaNoogles
- · Replies 4 ·
Pulley, Ramp with Moment of Inertia
- kc0ldeah
- · Replies 5 ·
Help getting a DC motor to spin on a breadboard
- CosB
- · Replies 7 ·
What Is the Entropy Change When Ice Melts in a Room at 20 Degrees Celsius?
- ks23
- · Replies 1 ·
How Does Gas Escape Affect Volume and Mass in Thermodynamics?
- fluidistic
- · Replies 3 ·
How does sin(65)/sin(37) become sin(65)/tan(37)?
- foreverlost
- · Replies 5 ·
How Does Changing Electric Field Influence Magnetic Field in a Capacitor?
- GeorgeCostanz
- · Replies 6 ·
Average force of water on diver jumping from 12 m tower
- rasputin66
- · Replies 7 ·
LR Circuit: Book Mistake or Misunderstanding?
- kahwawashay1
- · Replies 1 ·
Bernoulli Equation - Units Question
- JJBladester
- · Replies 3 ·
Question on capacitance and electric fields
- daviddeakin
- · Replies 12 ·
Finding net force, friction, and applied force on a 0.72 kg block
- supernova1203
- · Replies 6 ·
Forces acting on a falling cylinder?
- kjn11994
- · Replies 2 ·
What Forces Act on a Descending Cylinder Attached to a Tape?
- kjn11994
- · Replies 2 ·
Mass Moment of inertia of a cylinder with 4 holes?
- qpham26
- · Replies 4 ·
Rotation about CM - Can I use Moment of Inertia?
- RoshanBBQ
- · Replies 6 ·
Maximum velocity and acceleration of spring-mass system
- hopkid
- · Replies 7 ·
Perfectly inelastic collision - energies
- kapitan90
- · Replies 2 ·
How Fast Must a Spaceship Travel to Cover 12 Light-Years in 7 Years?
- arp777
- · Replies 4 ·
Moment of Inertia in Cylindrical Coordinates
- mathmannn
- · Replies 1 ·
Pulley Small or Large for a Motor
- surajzakaas
- · Replies 9 ·
Work by gravity on Spiderman swinging on a rope from 90° to 60°
- dgibbs
- · Replies 2 ·
Conservation of Rotational Energy Question
- Whiterice
- · Replies 1 ·
Conservation of energy of ball in a half pipe
- rasputin66
- · Replies 1 ·
What is the uncertainty of Δx for the given wavefunction?
- JonathanT
- · Replies 1 ·
What is the pressure at 80 m below the surface of the ocean.
- ScienceGeek24
- · Replies 2 ·
Circular Motion Problem with a Motorcycle Driving in a Sphere
- patruick94
- · Replies 23 ·
Light Bulbs in Series vs. Parallel
- kimberlyann9
- · Replies 2 ·
A Christmas tree ball hangs from a hook in the ceiling.
- ScienceGeek24
- · Replies 2 ·
Maximum speed of an electron in an ideal solenoid
- efredman
- · Replies 1 ·
Voltage created by charged flat plates
- physickkksss
- · Replies 11 ·
Voltage Question: Find Potential Difference at x=4.0m, y=2.0m
- freeofwork
- · Replies 4 ·
Frictional force, normal force and coefficient of friction
- lisa1991
- · Replies 3 ·
What is the current in a circuit with multiple resistors and a given voltage?
- cjc881
- · Replies 10 ·
Optimizing Charging RC Circuits: Lowering Time Constant for Faster Charging
- kimberlyann9
- · Replies 2 ·
Physics Faraday's Law and Induced Electric Fields
- tnbstudent
- · Replies 4 ·
Equilibrium Ladder Question, can get 1st part but not 2nd
- sweetpete28
- · Replies 1 ·
Adjusting Telescoping Antenna Length
- Sevendust
- · Replies 5 ·
Ok then since I am wrong then formula for torque is wrong
- sweetpete28
- · Replies 5 ·
Isothermal compression of ideal gas with constant external pressure
- DirtyLeeds
- · Replies 3 ·
Finding Applied Force with Free Body Diagrams (Grade 12 Physics)
- jolierouge
- · Replies 2 ·
Grade 12 Centripetal Acceleration Question- Universal Law of Gravitation
- AudenCalbray
- · Replies 4 ·
Determine the tension in each wire?
- goracheski
- · Replies 2 ·
Electric Potential at Origin of Point Charges?
- freeofwork
- · Replies 2 ·
Static Friction of hollow sphere rolling up incline
- sweetpete28
- · Replies 11 ·
How Do You Calculate the Change in Momentum for Colliding Masses?
- hmvince
- · Replies 4 ·
Velocity of an apple before strikes the surface of a white dwarf.
- ScienceGeek24
- · Replies 5 ·
Acceleration problem with friction
- Fuzbawl
- · Replies 4 ·
Finding angle between vectors A = 3i + j and B = -i + 2j
- hardygirl989
- · Replies 2 ·
Positive Charge Induction on Insulating Sphere
- freeofwork
- · Replies 2 ·
What Is the Correct Theta to Use in Calculating the Scalar Product of Vectors?
- madinsane
- · Replies 1 ·
How Does a Third Plate Affect Capacitance in a 3 Plate Capacitor?
- bbakshan
- · Replies 9 ·
What is the magnitude of the car’s acceleration on a circular bend?
- Fr3sherthanu
- · Replies 4 ·
Find magnitude of magnetic field from loop
- kgal
- · Replies 1 ·
Torque and weight of a meterstick lab
- physux212
- · Replies 8 ·
Find magnitude of current to produce magnetic field
- kgal
- · Replies 1 ·
What is the direction of the neutron's velocity after the collision?
- oy_katet
- · Replies 1 ·
How Does Bullet Speed Change After Hitting a Pendulum?
- zaddyzad
- · Replies 40 ·
What are the forces exerted on a diving board when a person stands on the tip?
- PeachBanana
- · Replies 1 ·
Rotation, torque, angular momentum?
- kjn11994
- · Replies 3 ·
Displacement of an electron between two plates
- oy_katet
- · Replies 2 ·
How Is Torque Calculated on a Diving Board?
- PeachBanana
- · Replies 3 ·
Coplanar forces equilibrium- a rod in a sphere
- enadiz
- · Replies 1 ·
Projectile problem without theta or time
- pwoolson
- · Replies 2 ·
Angular momentum (left or right movement)
- careman
- · Replies 6 ·
Particle Motion: Retardation & Arithmetic Progression
- Cbray
- · Replies 3 ·
Find the angular width of the central maximum.
- bsmm11
- · Replies 5 ·
Speed of box attached to spring
- TalibanNinja
- · Replies 5 ·
Magnetic flux through coiled wire
- Dr. Philgood
- · Replies 1 ·
How Can I Improve My Approach to Solving Dynamics Problems?
- HWGXX7
- · Replies 7 ·
Robot assembly displacement through two quarter-circle arcs
- blob84
- · Replies 3 ·
Exploding Mass Problem: Finding Distance Between Two Pieces After Landing
- issacnewton
- · Replies 6 ·
Degrees of freedom for a metal crystal
- zezima1
- · Replies 1 ·
Have Inertia Tensor for Object. Find It for Object after Rotation
- RoshanBBQ
- · Replies 1 ·
Average Back EMF Induced in Coil in Loudspeaker
- equinox2012
- · Replies 2 ·
Calculating Force (magnitude and direction) on a proton
- Obama
- · Replies 3 ·
Finding the zero gravitational force point between Earth and moon
- wow22
- · Replies 5 ·
Coulomb's law and negative charges
- bobsmith76
- · Replies 3 ·
What is the acceleration of masses in an Atwood machine with a rotating pulley?
- dumbperson
- · Replies 4 ·
What Is the Direction of Current in a Loop Near a Current-Carrying Wire?
- kimberlyann9
- · Replies 1 ·
Radiation calculation confusion
- murdrobe
- · Replies 1 ·
Thought experiment with two point sources of light
- PaulMuaddid
- · Replies 13 ·
What is the Number of Turns in the Secondary Coil of a Transformer?
- chikis
- · Replies 6 ·
Magnetic field in the middle of the plate
- regisz90
- · Replies 13 ·