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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Does the monkey always get hit if it drops when shot at?
- MattWakes
- · Replies 12 ·
Does dropping coffee filters from a fixed height measure terminal velocity?
- Jaimie
- · Replies 1 ·
Is My Redrawn Resistor Circuit Correct?
- moto30
- · Replies 4 ·
What is the Torque on a Crane Bar in a Fatal Accident Investigation?
- GoGoGadget
- · Replies 1 ·
Sinusoidial waves: Frequency is not dependant on speed?
- Willjeezy
- · Replies 2 ·
How Do You Derive Particle Distributions Using the Boltzmann Factor?
- ferret123
- · Replies 3 ·
Finding average velocity from a v-t graph and acceleration from a position-time graph
- CivilSigma
- · Replies 1 ·
Mass on Bridge, Find Force of Friction when bridge is barely inclined
- nickolaughagus
- · Replies 3 ·
Finding the Resonant frequency in an LC circuit
- bsr25
- · Replies 6 ·
Finding currents through batteries and voltage drop in a three-loop circuit
- lodovico
- · Replies 7 ·
Finding speed at half the height given initial velocity and mass
- rockchalk1312
- · Replies 1 ·
Finding the ratio ω/ωo of an underdamped oscillator
- HiggsBrozon
- · Replies 4 ·
Conservation of energy up a ramp.
- macaholic
- · Replies 1 ·
Cylinder rolling onto frictionless surface and yoyo with cut string
- modymaxx
- · Replies 17 ·
Frictional Forces and Stopping Distance in Physics
- Susie babe
- · Replies 1 ·
True or False Questions on the Photoelectric Effect
- kickingpaper
- · Replies 1 ·
Given electric field, find surface or charge density
- fishingspree2
- · Replies 1 ·
Capacititive Circuit - discharging through lamp and resistor
- CAF123
- · Replies 20 ·
Two Oppositely Charged Parallel Planes, Infinite In Extent
- Bashyboy
- · Replies 22 ·
What Is the x Component of the Electric Field at a Point on the x-Axis?
- Broem
- · Replies 4 ·
What is the Correct Angle for the Net Magnetic Force?
- lovelyrwwr
- · Replies 1 ·
Calculating Acceleration = what?
- Dancing_Solo
- · Replies 5 ·
Vibration problem given Force,length and mass
- Equilibrium
- · Replies 5 ·
Capacitors are charged, disconnected from battery, and had plates swit
- penguinnnnnx5
- · Replies 5 ·
Kinetic energy from plate A to plate B
- hanna.eunice
- · Replies 4 ·
What is the Direction of Friction on a Sphere Placed on a Smooth Inclined Plane?
- Saitama
- · Replies 7 ·
Horizontal force exerted by an engine
- theBEAST
- · Replies 3 ·
Ranking currents and voltages in circuit with LED and two resistors
- orangefruit
- · Replies 10 ·
Torque question need explaination
- MikeMai
- · Replies 2 ·
Work done on a spring by an ideal gas
- physninj
- · Replies 16 ·
Velocity to Distance Time Graph?
- kencamarador
- · Replies 1 ·
H-shaped rigid body rotating about one leg with parallel axis theorem
- Lahooty
- · Replies 1 ·
Conservation of Energy in Orbits
- forcefrom
- · Replies 13 ·
How does friction affect the middle box in a double tension problem?
- greenir
- · Replies 1 ·
How far is the ray displaced as a result of traveling through the gla
- lizaliiu
- · Replies 2 ·
Calculate the speed of the Cylinder in the pulley system
- Northbysouth
- · Replies 2 ·
Electric Fields Cancelling Out?
- Bashyboy
- · Replies 4 ·
What is the total horizontal force on a constricted pipe with water flow?
- danielakkerma
- · Replies 25 ·
Calculate the energy spread of the Fe-57 first excited state
- richyw
- · Replies 2 ·
Find the current in each resistor.
- whynot314
- · Replies 2 ·
Mercury manometer height using Bernoulli's equation
- theBEAST
- · Replies 2 ·
Levitating wire in magnetic field.
- SherlockOhms
- · Replies 4 ·
When landing after a spectacular somersault
- chacheck
- · Replies 1 ·
Gravitational field strength (ratios)
- HerroFish
- · Replies 3 ·
How High Can a Pebble Flung from a Car Tire Reach?
- gmianosi
- · Replies 2 ·
Electric Flux and Charge Distribution in a Cube with Uniform Electric Fields
- Bashyboy
- · Replies 10 ·
Calculating Copper Volume for Hollow Spherical Shell
- babysnatcher
- · Replies 3 ·
Angular momentum of excited electron in hydrogen
- Fluxthroughme
- · Replies 9 ·
Integration Intuition for work between x1 and x2
- Joshb60796
- · Replies 4 ·
Determining on what type of Motion to use on a Position Time Graph?
- kencamarador
- · Replies 1 ·
Why does right-hand rule give different torque than cross product?
- ShizukaSm
- · Replies 8 ·
Net electric force on charge from three other charges on a line
- RichMarrem
- · Replies 2 ·
Elastic energy and force on an object
- Joshb60796
- · Replies 14 ·
How Is the Proton's Radius of Curvature Determined in a Magnetic Field?
- Gee Wiz
- · Replies 28 ·
Displacement v Time graph for a wave
- trollcast
- · Replies 7 ·
How Do You Calculate the Time Period of SHM for a Liquid in a U-Shaped Tube?
- cyb3r
- · Replies 1 ·
How can potential energy functions be used to model a system's motion?
- LovePhys
- · Replies 9 ·
How Do Potential Differences Distribute Across Series Capacitors?
- Renaldo
- · Replies 9 ·
What is the steady state voltage across the capacitor in this open circuit?
- pyroknife
- · Replies 5 ·
Acceleration of a Falling Object from Average Velocities
- ErinSK
- · Replies 6 ·
Transistors and boolean expression
- charlies1902
- · Replies 12 ·
Are three capacitors connected in series, parallel, or mixed?
- sergioro
- · Replies 4 ·
Does ideal mean forward biased for a diode in a circuit?
- Clandry
- · Replies 9 ·
Variations of electrostatic potential energy
- Poley
- · Replies 2 ·
Is the Voltage at Point A Still 5V with V_in at 0 in a Transistor-Diode Circuit?
- Clandry
- · Replies 1 ·
Is Voltage Across Always a Magnitude?
- pyroknife
- · Replies 3 ·
Constant acceleration kinematics: stopping distance and uniform acceleration
- CivilSigma
- · Replies 1 ·
Using gradient values of a graph to determine angular acceleration
- vodkasoup
- · Replies 5 ·
Find the constant c given quadratic equation F=
- rockchalk1312
- · Replies 2 ·
Calculating work done by helicopter/gravity, kinetic energy and speed?
- rockchalk1312
- · Replies 1 ·
Uniformly charged distributions (Electricity)
- ehabmozart
- · Replies 5 ·
Work done by a spring on a block when released from 14cm?
- rockchalk1312
- · Replies 3 ·
Relation between a photon's energy and momentum
- Fluxthroughme
- · Replies 2 ·
Relative Velocity of Balls: Solving for t=1 sec
- Litcyb
- · Replies 3 ·
Falling elevator energy conservation
- kopinator
- · Replies 12 ·
Calculating Work with Vector Notation
- Joshb60796
- · Replies 12 ·
How Is Charge Calculated in a Two Loop RC Circuit After the Switch Opens?
- Gee Wiz
- · Replies 36 ·
Impulse and momentum change during bungee cord braking
- knnox
- · Replies 3 ·
How would water vapor contamination affect PV=nRT
- skate_nerd
- · Replies 3 ·
Find the maximum deflection of the spring
- Northbysouth
- · Replies 1 ·
Is the 'Method' written in present or past tense?
- ZedCar
- · Replies 2 ·
Ice block sliding distance after pushing force stops
- njt84572
- · Replies 1 ·
Centripetal force, this is confusing. Why?
- x86
- · Replies 3 ·
Find the point where the eletrostatic force is maximum. (With drawing)
- tsuwal
- · Replies 7 ·
Particle motion in a Magnetic Field 1
- Gee Wiz
- · Replies 2 ·
Supposly simple balistic motion prob
- assaftolko
- · Replies 6 ·
Understanding Spring Length in the Center-of-Mass Frame
- Saitama
- · Replies 5 ·
Find angle at which the projectile hits
- CollegeStudent
- · Replies 6 ·
Amplitude in a simple pendulum - angle or distance?
- shmurr
- · Replies 8 ·
Three rescuers pulling horizontally on a safety net to keep it taut
- Sneakatone
- · Replies 22 ·
How Is Light Intensity Affected by Multiple Polarizing Filters?
- alittlelost
- · Replies 5 ·
Calculate the moment when the pedal
- wally25feb
- · Replies 8 ·
How Do Relative Velocities Determine Collision Courses?
- Woolyabyss
- · Replies 3 ·
Electric Field On A Point Charge Due To A Uniformly Charged Rod
- Unix
- · Replies 4 ·
Heat needed to maintain temperature in scaled rectangular houses
- spockjones20
- · Replies 6 ·
River canoe and bottle relative velocity problem
- Toranc3
- · Replies 3 ·
Is Momentum and Kinetic Energy Conserved in Collisions?
- Habibrobert
- · Replies 1 ·
How Does Inserting a Dielectric Affect a Charged Capacitor?
- CAF123
- · Replies 10 ·
Electric Field due to a charged conducting sheet
- vodkasoup
- · Replies 2 ·
Does adding a test charge disrupt the existing electric field?
- fishingspree2
- · Replies 2 ·