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