Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Moment of inertia of two rods about their center of mass
- supercali
- · Replies 5 ·
How Do You Calculate the Charge and Number of Excess Electrons on a Pith Ball?
- ehdubbya
- · Replies 1 ·
Two conducting spheres with Coulomb's Law
- Saladsamurai
- · Replies 6 ·
Net Force of a charged particle (Coulomb's Law)
- Saladsamurai
- · Replies 9 ·
Does this graph is correct representing a sound wave?
- SciencePF
- · Replies 3 ·
Cannon Hits Cliff: Calculating Minimum Muzzle Velocity & Distance Past Edge
- Yahaira.Reyes
- · Replies 3 ·
Two men, a crate, and a set of stairs
- TFM
- · Replies 12 ·
Finding Components of Vectors in the xy Plane
- ff4930
- · Replies 7 ·
Solving for Revolutions: Electric-Generator Turbine
- rjimenez
- · Replies 1 ·
What is the maximum height of a rocket in free fall?
- spj1
- · Replies 6 ·
Solving 3 Forces and Acceleration of Object
- Go Angels
- · Replies 6 ·
Is there an additional force or stress put on the trailer jack?
- edword456
- · Replies 4 ·
Is the system in translational equilibrium?
- Oerg
- · Replies 4 ·
Two charged particles fired at each other.
- mellotron
- · Replies 1 ·
Can V3 = V1 + V2 have magnitude 0, 6, 5, or 3 m/s?
- am08
- · Replies 5 ·
How High Does Water Rise in a Diving Bell?
- Fizzicist
- · Replies 1 ·
Find the magnitude of the electric field in the capacitor
- titi07
- · Replies 1 ·
How Do You Calculate the Grating Spacing in a Diffraction Problem?
- physicsbhelp
- · Replies 9 ·
Current in a solution of NaCl ions.
- Goldenwind
- · Replies 4 ·
Equivalent resistance of a cube with equal edge resistances
- BuBbLeS01
- · Replies 4 ·
Calculating Maximum Load Capacity of a Hydrogen-Filled Balloon
- anyone1979
- · Replies 6 ·
Acceleration Needed to Keep Block From Falling
- nightshade123
- · Replies 4 ·
Newton's Laws and an electron of mass
- nlb149
- · Replies 2 ·
How Fast is a Balloon Rising if a Dropped Coin Hits the Ground in 4 Seconds?
- fraserperry
- · Replies 7 ·
Average velocity for eight laps around a 400m track
- sprinter08
- · Replies 2 ·
Ferris Wheel: Find Direction of Passenger's Acceleration
- rsala
- · Replies 5 ·
Particle launched vertically at 39.24 m/s: velocity, acceleration, displacement on impact
- StephenDoty
- · Replies 13 ·
What Happens Just Outside a Black Hole's Event Horizon?
- bjfcool
- · Replies 3 ·
Cost of operating a 2.6 kW toaster for one month
- pinkyjoshi65
- · Replies 1 ·
Velocity with changing direction
- AshleyJayda
- · Replies 1 ·
Reaction force on particle in vertical semicircular ring at 60°
- joker_900
- · Replies 5 ·
Potential difference across a solenoid
- Angelos
- · Replies 2 ·
Measuring Mass of a Hanging Weight: Stephen's Question
- StephenDoty
- · Replies 1 ·
Finding electron density from current and drift velocity in a wire
- cse63146
- · Replies 6 ·
Electric Potential of a Circular Rod
- Zythyr
- · Replies 4 ·
What mathematics beyond calculus is used in quantum mechanics?
- Gear300
- · Replies 6 ·
Understanding Electric Field Graph: An In-Depth Explanation
- Zythyr
- · Replies 3 ·
Question abou Simple Harmonic Motion
- jcsolis
- · Replies 2 ·
Electric Field of a Capacitor with asymmetric dielectric
- Mikey789
- · Replies 3 ·
How Do You Calculate Damping Coefficient in a Pendulum?
- jlew
- · Replies 4 ·
Solved: 2D Kinematics Help | Average Speed, Decrease in Velocity
- BitterSuites
- · Replies 10 ·
Optimizing Water Flow: Finding Maximum Mass and Rate of Change
- lgen0290
- · Replies 3 ·
Find the pebble's position, velocity, and acceleration
- tronter
- · Replies 3 ·
Moment of inertia of a hoop on an arm
- Integral
- · Replies 5 ·
How Is Gravity Calculated for a Dropped Object on the Moon?
- lbutscha
- · Replies 1 ·
Determining g from harmonic frequency and a pendulum
- vertabatt
- · Replies 3 ·
How Fast and at What Angle Must a Hawk Dive to Recapture Its Prey?
- Melchior25
- · Replies 1 ·
Projectile Motion with Neglected Air Resistance: True or False Statements
- Melchior25
- · Replies 2 ·
Electric field magnitude and direction at center of square with point charges
- daimoku
- · Replies 4 ·
Accuracy of Gravity: -9.8m/s/s +- _______m/s/s
- StephenDoty
- · Replies 3 ·
Thermistor relationship, linearizing (really easy)
- gRACK
- · Replies 2 ·
Electric field and point charge problem
- zinedine_88
- · Replies 1 ·
What Forces Act on a Ball Suspended from the Ceiling?
- lbutscha
- · Replies 1 ·
Projectile motion basketball question
- jj8890
- · Replies 9 ·
Calculating Volume of Earth Removed in Open-Pit Coal Mine
- lgen0290
- · Replies 4 ·
Gravity 500 km above Earth's surface using g_r equation
- davo
- · Replies 3 ·
How Do You Calculate the Speed of a Stone in a Sling?
- Melchior25
- · Replies 2 ·
Solve the Physics Problem: Astronaut Drops Camera on Moon
- lbutscha
- · Replies 5 ·
Circuit Analyses: Find E3 Given Diagram
- polymerase
- · Replies 4 ·
Piston Question that I do not understand
- LandOfStandar
- · Replies 1 ·
I thought conversions were simple
- indepth
- · Replies 29 ·
How Do You Solve for Vf2 in a Momentum Equation?
- physicsfreak9
- · Replies 4 ·
Time it takes an oscillating mass to reach a certain velocity
- Terp
- · Replies 10 ·
Entropy-any direction would be appreciated
- hils0005
- · Replies 1 ·
Electric potential and potential energy of electron in hydrogen atom
- adam32386
- · Replies 1 ·
The Normal Force and Inclined Planes
- faunmia
- · Replies 6 ·
Airplane Flight Time Calculation with Prevailing Wind and Air Speed
- Alemayo1
- · Replies 2 ·
200kg Water Moved in 1min by 600W Pump
- looi76
- · Replies 1 ·
What Happens to Wire Resistance When Stretched?
- BuBbLeS01
- · Replies 2 ·
Calculate Current in Nichrome Wire with 11V Voltage
- BuBbLeS01
- · Replies 1 ·
Centripetal Acceleration of washer spin cycle
- CursedAntagonis
- · Replies 8 ·
Question on Harmonics involving Air Tube
- dgoudie
- · Replies 4 ·
Rotational Kinematics of a disk
- Batman4t
- · Replies 1 ·
Solve Rotational Dynamics Homework: Flywheel Stopping in 3 Minutes
- Lyphta
- · Replies 1 ·
How many Earths fit inside the sun?
- torresmido
- · Replies 1 ·
Can Velocity Be Zero While Acceleration Is Not?
- am08
- · Replies 1 ·
Calculating Plane Speed from Shockwave
- DmX0rZ
- · Replies 15 ·
Physics principles involved in wind power systems
- kateman
- · Replies 6 ·
Cesium Chloride Crystal Structure
- chemnerd
- · Replies 1 ·
Calculate the rotational inertia of the pendulum
- LandOfStandar
- · Replies 12 ·
How long does it take this transverse wave to travel along a string
- jcadams9
- · Replies 2 ·
Electric Flux Calculation for Oppositely Charged Circular Plates
- xcvxcvvc
- · Replies 1 ·
Potential difference between two points near a point charge
- Mhchurch4
- · Replies 1 ·
How to Calculate Potential Difference and Electric Field for a Point Charge?
- Mhchurch4
- · Replies 1 ·
Maximum range for a projectile launched at an angle on an incline
- blindside
- · Replies 7 ·
How Is the Equilibrium Radius Determined in Rotational Spring Motion?
- Abarak
- · Replies 5 ·
Biophysics problem - amino acid dipoles
- wfu113
- · Replies 1 ·
Calculating Initial Speed: Soccer Player Kicks Rock Off Cliff into Water
- blazin247nc
- · Replies 10 ·
Total energy of a spring-mass system (harmonic motion)
- Terp
- · Replies 6 ·
Find radius of circular motion from acceleration vectors at two times
- TS656577
- · Replies 1 ·
How do you find pendulum period from oscillation count and time?
- lexi_love
- · Replies 4 ·
How Does Inserting a Dielectric Change Capacitor Voltage?
- arod2812
- · Replies 3 ·
Solve for the time and initial velocity of a ball rolling off a table?"
- TS656577
- · Replies 5 ·
What Is the Position and Displacement of a Watermelon Seed in 3D Space?
- TS656577
- · Replies 7 ·
Potential Difference: 4.2 C Charge & 4.5 MJ Energy Boil/Vaporize
- Mhchurch4
- · Replies 1 ·
Finding Torque Applied to a Charged Rod in an External Electric Field
- silvashadow
- · Replies 5 ·
Finding Potential Difference Change with Dielectric Insertion in Capacitor
- arod2812
- · Replies 7 ·
Why Does My Projectile Motion Calculation Keep Failing?
- TS656577
- · Replies 4 ·
What is the vertical height between two climbers?
- afcwestwarrior
- · Replies 9 ·