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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Tension in string when ball swings to lowest point
- fball558
- · Replies 6 ·
Temperature change in Joule's paddle wheel experiment
- fball558
- · Replies 5 ·
Easy Conservation of Energy (Skiing)
- TwinGemini14
- · Replies 1 ·
Angular Velocity and Angular Acceleration
- Hotsuma
- · Replies 5 ·
Kinetic Energy problem i think
- nlsed
- · Replies 5 ·
Why do bulbs in series and parallel circuits have different brightness?
- IvaNMK
- · Replies 4 ·
Accelertion Due to gravity on a ramp equation
- krsbuilt
- · Replies 3 ·
How to Stop a Rotating Spaceship?
- nns91
- · Replies 5 ·
Earth and Moon (Acceleration of Gravity)
- physics817
- · Replies 5 ·
Sun Shade Projection type of problem
- unknown101
- · Replies 19 ·
Finding net force on object with more than one force
- Planefreak
- · Replies 1 ·
Circular Motion of an automobile
- chops369
- · Replies 3 ·
Conservation of energy of two blocks
- iamkristing
- · Replies 3 ·
Velocityfield and stream function
- MaxManus
- · Replies 1 ·
Is the Calculation of the Bird's Average Acceleration Correct?
- RS7
- · Replies 4 ·
What are the forces involved in rolling motion?
- peaceandlove
- · Replies 10 ·
Why Does the Atwood Machine Accelerate Faster with Increased Mass on One Side?
- brick
- · Replies 1 ·
How come when you reverse a diode the current/voltage? is zero?
- mmmboh
- · Replies 5 ·
Statics forces acting on supports
- jimbo71
- · Replies 2 ·
Magnitude of the magnetic field produced by a wire
- Kiyah
- · Replies 2 ·
Power in voltage/current sources, passive sign convention
- caesius
- · Replies 15 ·
Why do covalent bonds form between neutral atoms?
- MrB3nn
- · Replies 1 ·
Problem with proof of elastic energy
- ffrog
- · Replies 4 ·
Calculating Force for Moving Railroad Car
- queenspublic
- · Replies 1 ·
Physics of throwing and rolling dice on a table
- Hmm
- · Replies 8 ·
Velocity of Car after Unloading Gravel
- jeeves_17
- · Replies 6 ·
What Is the Minimum Speed of a Dart to Complete a Loop with a Lead Sphere?
- yandao87
- · Replies 10 ·
Charged metal sphere suspended by wire repelling another charged sphere
- simplicity12
- · Replies 7 ·
Calculating the Speed of Exhaust Gas for a Rocket in Deep Space
- ch010308
- · Replies 3 ·
Solving Entropy Change of Lake-Ice Cube System
- __JR__
- · Replies 13 ·
Coffee filter terminal velocity and fall time with stacked filters
- fball558
- · Replies 8 ·
Calculating Pressure and Volume Increase on Rising from Depth d
- dimpledur
- · Replies 1 ·
What Direction Should Ship A Steer to Minimize Distance to Ship B?
- thepopasmurf
- · Replies 5 ·
Capacitor energy ratio when connected in parallel vs series
- Kudo Shinichi
- · Replies 4 ·
Color Force gets stronger with distance?
- latitude
- · Replies 1 ·
Force of wire in a magnetic field
- Cheezay
- · Replies 2 ·
How do I draw phasor diagrams from voltmeter and ammeter readings?
- rock.freak667
- · Replies 22 ·
How do GPS devices determine your position?
- doc.madani
- · Replies 2 ·
Determining magnitudes of forces on a block
- tonia0605
- · Replies 2 ·
How Do You Rearrange v²=u²+2as to Solve for 's'?
- Infamous
- · Replies 5 ·
Moment of inertia (disk with off center hole)
- Imperitor
- · Replies 4 ·
What Is the Difference Between Friction and Viscosity?
- quantum brain
- · Replies 1 ·
RCL Circuit - Problem due at 11 PM EST tonight, have been working on it for days
- phys62
- · Replies 3 ·
Torque of a current carrying wire in magnetic field
- richard7893
- · Replies 3 ·
Angular momentum and torque of a particle
- physics_geek
- · Replies 1 ·
RCL circuit containing only a capacitor, inductor, and generator
- phys62
- · Replies 14 ·
Pumped-storage reservoir draining at 305 MW over 6.7 hours
- tnutty
- · Replies 14 ·
Conservation of Energy (physics)
- Knfoster
- · Replies 6 ·
How Much Fuel and Oxidizer is Required for a Rocket to Reach 10,000 m/s?
- cryptcougar
- · Replies 1 ·
What Is the Charge of a Deutrium Atom?
- karobins
- · Replies 1 ·
What is the uncertainty of a 60 Hz ticker timer?
- alexsb92
- · Replies 2 ·
Calculating Velocity of Fishing Boats in a Lake
- ibysaiyan
- · Replies 3 ·
Calculations involving freefall
- SPH4UJS
- · Replies 5 ·
The sagging effect and angular speed.
- alevis
- · Replies 1 ·
I must use the wave equation to to find the speed of a wave.
- afcwestwarrior
- · Replies 3 ·
What Is the Minimum Kinetic Energy Needed for Fusion in Stars?
- fball558
- · Replies 4 ·
Calculate The Surface Temperature of Mercury
- TFM
- · Replies 5 ·
Tension on a rope from jumping tightwalker
- fanman791
- · Replies 3 ·
How Can You Calculate Ball Trajectory and Impact Velocity?
- imfunsize2011
- · Replies 2 ·
What Is the Fringe Width in Young's Double Slit Experiment with Red Light?
- ibysaiyan
- · Replies 1 ·
How Do RC Circuits Behave with Capacitors and Resistors?
- shemer77
- · Replies 1 ·
Velocity and acceleration with a rock thrown upward and falling skydiver
- euro-ignit3
- · Replies 3 ·
Simple Harmonic motion of the following oscillations
- queenspublic
- · Replies 3 ·
Angle from force applied / Momentum question
- Kaln0s
- · Replies 1 ·
Hair dryer and mixer circuit with 120V battery and resistors
- shemer77
- · Replies 3 ·
How Do You Calculate the Initial Velocity of a Tennis Ball Thrown Upward?
- nelly42688
- · Replies 6 ·
How Much Force Is Needed to Keep a Beach Ball Underwater?
- jsalapide
- · Replies 3 ·
Electrical Power - Cost of kW*hr
- calvert11
- · Replies 4 ·
How Do You Calculate Spring Constant and Package Weight?
- queenspublic
- · Replies 1 ·
Angular separation of 1st order red and violet in diffraction
- ibysaiyan
- · Replies 7 ·
How Does Time Relate to Distance in Gravity Experiments?
- DERRAN
- · Replies 1 ·
How Does an Airplane's Climb Affect Package Drop Distance?
- kcalhoun
- · Replies 33 ·
How to Determine the Block's Position After Applying Force to a Spring?
- queenspublic
- · Replies 22 ·
What is the Orbital Speed of a Satellite in a Circular Orbit?
- Whotto
- · Replies 3 ·
How Do You Identify Forces Acting on an Object?
- alexas
- · Replies 1 ·
How High Does the Daredevil Reach?
- Aznhmonglor
- · Replies 3 ·
Calculating Buoyant Force for a Submerged Beach Ball
- jsalapide
- · Replies 4 ·
Torque on a dipole in an electric field
- kgigs6
- · Replies 1 ·
Kinematics in Two Deminsions, Projectile Motion
- alexas
- · Replies 5 ·
How Do You Calculate Forces in a Truss Without Given Angles?
- ZaZu
- · Replies 1 ·
Finding the unknown force in a moment equilibrium problem
- ZaZu
- · Replies 11 ·
Geometric Optics: Snell's Law calculation problem
- StupidGenius
- · Replies 4 ·
Power required to generate waves
- gleeson.tim
- · Replies 1 ·
Angular Acceleration of Rod w/ Pivoted Weight
- mrnastytime
- · Replies 9 ·
Angular Velocity of a pivoting rod
- TG3
- · Replies 1 ·
Centripetal Acceleration of Stone Problem
- The_ArtofScience
- · Replies 3 ·
How Do Resistors in Series and Parallel Affect Circuit Behavior?
- stonnn
- · Replies 1 ·
Connecting Electric Potential and Thermal Energy
- RIPCLB
- · Replies 5 ·
Current induced in loop - treat like a solenoid?
- yeahhyeahyeah
- · Replies 1 ·
What Is the Launch Speed for a Projectile to Clear a 15m Barrier?
- kcalhoun
- · Replies 9 ·
Projectile Motion Kenimatics in Two Deminisions?
- alexas
- · Replies 3 ·
Relating friction with acceleration
- elimenohpee
- · Replies 2 ·
Finding Velocity via Convervation of Energy
- Norngpinky
- · Replies 2 ·
Finding orbital speed and period for astronauts around the moon
- XodoX
- · Replies 5 ·
Acceleration vs mass graph shape?
- sean-820
- · Replies 4 ·
How Can You Calculate the Magnitude of the Force of Friction on a Slide?
- septum
- · Replies 5 ·
What is the Change in Kinetic Energy of a Box Pulled Up a Ramp with Friction?
- gansta344u
- · Replies 12 ·
Horizontal force to move two stacked trunks at constant velocity
- phy_
- · Replies 6 ·
What is the net charge of the ball?
- elee123
- · Replies 3 ·
What Is Neptune's Scaled Radius in a Scaled Solar System?
- autumnrose3
- · Replies 2 ·