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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Vector Components and Displacement of Lost Dog
- nadong2dong
- · Replies 2 ·
Thin-film interference problem
- NewtonianAlch
- · Replies 2 ·
Finding radial acceleration of ant on sphere in spherical coordinates
- Johnson
- · Replies 2 ·
Calculating ratio energy radiated in a loop and comment on result
- craig.16
- · Replies 1 ·
SHM question involving a tunnel through earth
- craig.16
- · Replies 2 ·
Intensity of light in Fraunhofer diffraction pattern
- ProPatto16
- · Replies 15 ·
Newton's Laws and coefficient of static friction
- jehan4141
- · Replies 1 ·
What is the final velocity of the particle?
- DavidAp
- · Replies 1 ·
Frequency of a simple pendulum
- bacon
- · Replies 1 ·
Velocity of a rocket which never returns to earth
- process91
- · Replies 6 ·
Tension at different points in a system with equal acceleration
- mercena
- · Replies 2 ·
Amount of force to pull a sled up an icy slope
- Capncanada
- · Replies 5 ·
Confirming Gauss' Law: Finding Flux
- kuahji
- · Replies 1 ·
Uniform acceleration of moving wagon
- sdoi
- · Replies 21 ·
Electric potential energy graph
- slft
- · Replies 3 ·
Elastic collision with relative velocity equation
- starburst
- · Replies 1 ·
Solving for Car's Acceleration, Time, and Average Speed
- Goopy17
- · Replies 2 ·
How far does the student run before catching the bus?
- sdoi
- · Replies 10 ·
How Does a Rope with Mass Affect the Forces on a Block?
- JamesGold
- · Replies 2 ·
Finding wavelength and frequency from speed and period
- asweetland
- · Replies 1 ·
Relative motion problem (with picture)
- unknownman
- · Replies 1 ·
How Is Energy Dissipated When Braking a Car?
- physkid1
- · Replies 9 ·
Vector addition and Relative motion
- nadong2dong
- · Replies 16 ·
Deriving power from the relativistic energy equation
- Xamien
- · Replies 2 ·
Two masses on a pulley with one starting 4 m above the other
- Oatmeal11
- · Replies 10 ·
Finding initial velocity of a free-falling object that launched off a cliff
- kmb11132
- · Replies 9 ·
A coyote chases a rabbit basic vector problem
- kirby27
- · Replies 3 ·
When to round significant figures in unit conversions?
- physicsteach
- · Replies 3 ·
What is the Force Exerted by a Spring in a Moving Elevator?
- mrshappy0
- · Replies 5 ·
What equation could I use for this?
- AVReidy
- · Replies 1 ·
Minimum speed to reach the moon from Earth's surface
- aszymans
- · Replies 6 ·
Horizontal acceleration of 5.00-kg block with two force vectors
- MakeItThrough
- · Replies 4 ·
Torque on a current carrying wire
- dimpledur
- · Replies 1 ·
How Far Will a Bundle Slide Up an Incline with Friction?
- h7u9i
- · Replies 3 ·
Potato Launcher with Constant Velocity
- apierron
- · Replies 6 ·
Why is there a spectrum on the back of a CD or DVD?
- logearav
- · Replies 2 ·
Battery - diagrammatic representation
- logearav
- · Replies 2 ·
Why does electron energy increase when its de Broglie wavelength decreases?
- logearav
- · Replies 2 ·
Horizontal and vertical oscillations of a loaded spring
- logearav
- · Replies 8 ·
What does "behind the cathode" mean in canal rays experiments?
- logearav
- · Replies 2 ·
How far does the car travel? Uniform acceleration.
- AVReidy
- · Replies 5 ·
Centripetal Acceleration with infinite Radius?
- litzkrieg
- · Replies 1 ·
Vector resultant of 60N and 85N at different angles
- MattVonFat
- · Replies 2 ·
Car Speed for 1kW Home Power Usage
- Physics211
- · Replies 3 ·
I deriving equtions for projectile motion.
- BarneyStinson
- · Replies 2 ·
Direction of tension force 5 on free body diagram
- GreenPrint
- · Replies 8 ·
How to solve for average velocity on a distance time graph?
- justinh8
- · Replies 1 ·
How Strong Does a Fishing Line Need to Be to Stop a Drifting Salmon?
- Kawasaki268F
- · Replies 1 ·
Displacement of watch minute hand tip from 8:00 to 8:20 and 8:00 to 9:00
- tgras141
- · Replies 2 ·
Lenz' Law, induced current in a ring falling
- Cade
- · Replies 6 ·
Tension in rope pulling up a bucket. Thanks
- nukeman
- · Replies 11 ·
How Do Newton's Laws Apply to Sliding Blocks with Different Masses and Friction?
- jehan4141
- · Replies 4 ·
Blocks connected by rope on slope
- superdave
- · Replies 4 ·
What is the max E that teh electron can obtain?
- thatoneguy123
- · Replies 2 ·
What Is the Maximum Angle Before Crutches Slip on the Floor?
- jehan4141
- · Replies 2 ·
Solving Physics Vectors: Car Velocity and Ball Velocity Relative to Kids/Road
- jbjohnybaker
- · Replies 1 ·
How Do You Calculate the Minimum Radius of Curvature for a Banked Roadway?
- DrunkApple
- · Replies 21 ·
How to find energy stored in a wire
- pvpkillerx
- · Replies 1 ·
How Does an Electric Force Alter the Energy of a Boron Nucleus?
- veryyc
- · Replies 1 ·
Determine if radio waves are constructive or destructive
- PCSL
- · Replies 5 ·
Projectile motion question-nothing special.
- Crusaderking1
- · Replies 6 ·
A batter hits a baseball motion and velocity problem
- kirby27
- · Replies 2 ·
Calculating Friction Force on Blocks A and B
- apprentice213
- · Replies 23 ·
Kinetic energy of 30000kg asteroid falling from space
- kottur
- · Replies 4 ·
Finding total resistance in a parallel and series circuit
- alfredo24pr
- · Replies 4 ·
Probabilities and binomial theorem
- SoggyBottoms
- · Replies 1 ·
Calculating Initial Velocity for Symmetric Projectile Motion
- doc2142
- · Replies 5 ·
Vector Components for Destination Distance
- Ellipses
- · Replies 5 ·
Absolute Uncertainty - Enough Information?
- aborder
- · Replies 14 ·
Definitions of source difference, path difference and reflection difference
- PCSL
- · Replies 1 ·
AP Physics B: Centripetal Force and Gravity
- stonecoldgen
- · Replies 1 ·
Integration limits for Gaussian surface
- auk411
- · Replies 1 ·
Will a metal rod keep moving if given a slight nudge in a magnetic field?
- serverxeon
- · Replies 5 ·
This juggler problem drining me crazy
- Alpharup
- · Replies 3 ·
Coefficient of friction for a car sliding down an icy hill
- Capncanada
- · Replies 4 ·
Finding star mass and orbital period from two planets' orbital speeds
- TmrK
- · Replies 4 ·
Smallest perpendicular velocity to orbit
- unscientific
- · Replies 6 ·
Struggling with Torque Problems in Static Equilibrium?
- stonecoldgen
- · Replies 4 ·
Time it takes for stacked boxes to cover distance
- Jonathan1515
- · Replies 8 ·
Net Flux through a cube with a varying electric field only along the Y-axis.
- BeRiemann
- · Replies 6 ·
Very quick Velocity/acceleration conceptual question
- inkandgold
- · Replies 1 ·
Plane and helicopter relative velocity
- -Dragoon-
- · Replies 2 ·
Calculating Total Distance Traveled with Constant Acceleration
- Joe26
- · Replies 2 ·
Spring in a motionless elevator
- mrshappy0
- · Replies 2 ·
Tension of a rope between two trees
- Elphaba123
- · Replies 5 ·
How High is the Cliff If a Ball Takes 3.2 Seconds to Hit the Water?
- SpecialKM
- · Replies 10 ·
Displacement, Velocity, and Acceleration
- ajab
- · Replies 2 ·
How long does it take the particle to hit the y-axis?
- red_viper_88
- · Replies 6 ·
Sum and difference of two vectors with given magnitudes
- magellaniic
- · Replies 2 ·
How do I convert gauss to Newtons per meter for magnetic calculations?
- eddybob123
- · Replies 4 ·
Finding the instantaneous velocity on a position time graph
- slag1928
- · Replies 2 ·
Solving Newton's Problem: 2 Masses Stacked on Each Other
- Myronnie
- · Replies 5 ·
Two trucks colliding head-on: impulse sign convention
- nokia8650
- · Replies 10 ·
Mechanics - two boxes down a hill
- Hioj
- · Replies 2 ·
Projectile Motion given a vertical distance and angle at that point
- whoareyou
- · Replies 4 ·
Maximum force on stacked boxes, when we don't want the boxes to slip.
- tomas123
- · Replies 5 ·
Formula deduction V2 = V02 + 2g(y - y0)
- iZnoGouD
- · Replies 1 ·
Finding Work given mass and distance
- MisterFusion
- · Replies 3 ·
Touching Conducting Spheres of Different Size
- royblaze
- · Replies 9 ·
How Many Steel Strands Are Needed to Safely Lower a Lift into a Mine?
- pvpkillerx
- · Replies 1 ·