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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2 problems in Dimensional analysis
- ishwar
- · Replies 1 ·
Why is the cross product defined the way it is?
- Haywire
- · Replies 10 ·
Center of mass acceleration for a dropped and fired cannonball
- kant
- · Replies 9 ·
Calculating Force at Left Point of Support on Bridge
- kitty9035
- · Replies 3 ·
Normal force on bridge supports with truck at 29m
- kitty9035
- · Replies 2 ·
Problem about rc and lr circuits
- kimduncanaimar
- · Replies 3 ·
Mercury flowing through horizontal tube with three different cross-sections
- Ertosthnes
- · Replies 1 ·
Finding tension in connected blocks on an incline
- pucoñe
- · Replies 4 ·
Concave mirrors and reproduction of an actual object
- boris16
- · Replies 1 ·
Electrostatic force on the particle
- young physical
- · Replies 2 ·
Heat required at constant pressure
- Amith2006
- · Replies 2 ·
What does moment of inertia actually mean?
- giant016
- · Replies 8 ·
Why is the magnitude of velocity equal to speed
- Helicobacter
- · Replies 17 ·
Volume of vessel occupied by molecules
- Amith2006
- · Replies 2 ·
What Angular Speed is Required for a Space Cylinder to Mimic Earth's Gravity?
- AznBoi
- · Replies 2 ·
How to Calculate Distance and Speed in a Uniformly Accelerating System
- pharm89
- · Replies 7 ·
How do fuel cells separate electrons from protons without extreme heat?
- dragoneye776
- · Replies 5 ·
Find the smallest diameter of an opaque object
- pivoxa15
- · Replies 13 ·
Angular Velocity Dynamics (Easy?)
- Stingarov
- · Replies 3 ·
Mass in rotating circular tube and spring extension problems
- orange_angel
- · Replies 5 ·
Several Energy Related Questions
- Fusilli_Jerry89
- · Replies 3 ·
Solving Fourier Series for Periodic Functions
- NutriGrainKiller
- · Replies 4 ·
Elastic potential energy of toy car
- student12phys
- · Replies 2 ·
Focus moonlight wth a mirror system
- mad_sh4rk
- · Replies 7 ·
Monkey and sled moving up an incline with friction
- 3dsmax
- · Replies 3 ·
Finding the fulcrum position for a lever lifting a moose
- aeroengphys
- · Replies 1 ·
Power of Water Pump (from continuity?)
- mbrmbrg
- · Replies 12 ·
How Does Cutting a Spring in Half Affect Its Oscillation Period?
- mbrmbrg
- · Replies 11 ·
Hoop Rolling Up Ramp: Confirm if Altitude Higher Than in Part A?
- CornDog
- · Replies 5 ·
Calculating Satellite Height and Velocity for Geostationary Orbit
- Gauss177
- · Replies 3 ·
How Does Tension Affect a Bicycle on an Incline?
- brianinbwangju
- · Replies 4 ·
Conservation of energy (rotation+translation)
- mbrmbrg
- · Replies 8 ·
Need Assistance with Physics Paper on Shuttle Launching
- physicsdummy
- · Replies 2 ·
Construct a Device to Move Across a Wire
- eucalegon
- · Replies 1 ·
Calculating Angular Speed of a Bar/Glob System After Impact
- americanforest
- · Replies 2 ·
How do you calculate half-life for radioactive isotopes?
- boredooom
- · Replies 11 ·
Calculating Acceleration of an Object with Drag
- xieon
- · Replies 3 ·
Physics 11 work done by friction
- Iceclover
- · Replies 4 ·
Falling object (gravity + kinematics)
- mbrmbrg
- · Replies 2 ·
Physics 11 kinetic and potential energy2
- Iceclover
- · Replies 7 ·
Physics 11 Force and potential energy
- Iceclover
- · Replies 16 ·
Mechanical Energy Transfer in a Spring System
- mbrmbrg
- · Replies 2 ·
How Much Force Does Pam's Rocket Pack Generate?
- Iceclover
- · Replies 9 ·
Increase power consumption with a capacitor
- eastoak
- · Replies 8 ·
Physics 11, kinetic energy problem
- Iceclover
- · Replies 12 ·
Where can I find information on torque?
- aeroengphys
- · Replies 1 ·
More friction-related wackiness
- legking
- · Replies 1 ·
Projectile fired at 38 degrees with 3.3 m/s horizontal velocity
- ataglance05
- · Replies 3 ·
What Does Each Variable Represent in the Cavendish Experiment Equation?
- Alec
- · Replies 1 ·
What Altitude Should a Skydiver Open the Parachute for a Safe Landing Velocity?
- 3dsmax
- · Replies 16 ·
SHM: Half Energy at Displacement
- mbrmbrg
- · Replies 2 ·
What Is the Smallest Coefficient of Friction to Prevent Slippage Between Boxes?
- legking
- · Replies 1 ·
Bicycle and Pulley: What Will the Scale Read in Two Different Examples?
- brianinbwangju
- · Replies 5 ·
Spring-mass system with nearest neighbor couplings
- sapiental
- · Replies 1 ·
Why Does the Cord Break at 200 N Tension in the Elevator Problem?
- Gauss177
- · Replies 1 ·
Finding magnetic flux between two coils with mutual inductance
- 6Stang7
- · Replies 7 ·
Why doesn't a roller coaster fall at the top of a loop?
- IMGOOD
- · Replies 18 ·
What is the Largest Possible Radius for a Safe Vertical Loop?
- Lilsilver
- · Replies 17 ·
Calculating Diaphragm Acceleration in a Loudspeaker
- mbrmbrg
- · Replies 4 ·
Calculating Artificial Gravity for Different Radii on a Space Station
- blumfeld0
- · Replies 10 ·
How Do You Analyze Motion Using V-T Graphs?
- Dazed
- · Replies 2 ·
Gravitational force on one sphere from three others in a square
- Gauss177
- · Replies 2 ·
Solving for Kinetic Energy at Top of Loop-the-Loop
- dkgojackets
- · Replies 5 ·
One more: three block, a table, and a pulley
- dkgojackets
- · Replies 4 ·
Max Acceleration of Oscillating Platform
- mbrmbrg
- · Replies 2 ·
Does a bouncing rubber ball or stuck clay apply more impulse to a door?
- 8parks11
- · Replies 9 ·
Why Doesn't Water Spill from a Bucket Tied to a String in Circular Motion?
- oliviecheng
- · Replies 3 ·
Force and potential energy of a particle
- dkgojackets
- · Replies 6 ·
Stone fired at 5.5 m/s with 2.3 J kinetic energy at maximum height
- apollo11cdr
- · Replies 10 ·
What is the formula for calculating the speed of light?
- dt19
- · Replies 6 ·
Accepting/Rejecting Measurement of 58mm Using Cahvenenet's Criterion
- stunner5000pt
- · Replies 1 ·
Changing components back into general
- themusicman118
- · Replies 9 ·
Pressure - breathing through a reed
- skyhigh302
- · Replies 2 ·
What is the depth of a merged river with given stream dimensions and speeds?
- mbrmbrg
- · Replies 2 ·
Acceleration of 1.53 kg mass falling with rotating pulley
- sbd21
- · Replies 24 ·
Torque Problem: Solving for Angular Acceleration and Velocity | Homework Help
- kenau_reveas
- · Replies 10 ·
Is the Object's Velocity-Time Graph Accurate? Explanation and Comparison
- Dazed
- · Replies 13 ·
Average Power delivered to Engine
- davidatwayne
- · Replies 4 ·
Why Does Sphere's Angular Velocity Differ with Different Reference Points?
- Dorothy Weglend
- · Replies 2 ·
Force of friction on a sled pulled at 53 degrees
- Makaroon
- · Replies 3 ·
Calculating the coefficicent of friction
- sskk221
- · Replies 4 ·
Easy question, I'm sure its something simple I'm overlooking
- Animal
- · Replies 6 ·
How many 60 Hz wavelengths span 5000 km?
- samdiah
- · Replies 2 ·
Calculate Interference in thin films
- samdiah
- · Replies 3 ·
Do I use a system of equations for this projectile motion?
- phantomcow2
- · Replies 6 ·
How Do You Calculate the Acceleration and Tension in a Pulley System?
- Mwyprism
- · Replies 27 ·
Diffraction of Light through Single Slit
- samdiah
- · Replies 2 ·
How far is the football displaced from its original position?
- Makaroon
- · Replies 6 ·
Rope Tension in Static Equilibrium
- semme
- · Replies 2 ·
Why use sine instead of cosine for SHM equation
- lizzyb
- · Replies 8 ·
Calculate the potential energy of a rope hanging
- Gregie666
- · Replies 13 ·
What Happens to a Copper Wire Carrying 400A at 12V After One Second?
- ToTalk
- · Replies 7 ·
Incidence angle in a Fraunhofer single slit problem
- Resero
- · Replies 3 ·
Calculating the Minimum Velocity of a Pygmy Blowgun Dart
- LezardValeth
- · Replies 2 ·
Drag racing (a symbolic power problem)
- OVB
- · Replies 2 ·
Electricity: series and parallel circuit
- jnimagine
- · Replies 8 ·
Question on Temperature/Kinetic Theory in AP Physics B
- xopenx
- · Replies 4 ·
Calculate the average force exerted on the driver by the seat belt
- terainfizik
- · Replies 3 ·
Analysis about the First and Second Law of Thermodynamics
- ~DarkAngel
- · Replies 1 ·