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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Bernoulli's equation and a fountain
- eversor
- · Replies 14 ·
Mass deflect and binding energy
- Nope
- · Replies 11 ·
Object falling 20 m vertically and projectile launched horizontally
- Idrees
- · Replies 3 ·
Find the electric field inside a circle
- fluidistic
- · Replies 8 ·
Rotational motion and tangential speed?
- yramos9
- · Replies 5 ·
Field Due to Continuous Distribution of Charge
- discordplus
- · Replies 3 ·
Cannon ball fired at castle - kinematics
- yaser1989
- · Replies 3 ·
How Is Displacement Current Calculated in a Parallel Plate Capacitor?
- PenTrik
- · Replies 1 ·
Linear Thermal expanion what is the formula we use?
- Idrees
- · Replies 4 ·
Hard/Tricky Problem on Energy Conservation
- ShamTheCandle
- · Replies 1 ·
What is the Correct Calculation for Inductance in an LC Circuit?
- 1st1
- · Replies 2 ·
Linear Momentum of Unwinding Cylinder
- jamaicanking
- · Replies 1 ·
Moment of inertia of hollow sphere with inner and outer radii
- George3
- · Replies 6 ·
Solving a Mechanical Energy Problem Involving a Swing
- jl39845
- · Replies 1 ·
Final Temperature of 75g Silicon After 750 Calories Transfer
- knownothing1
- · Replies 1 ·
Ice cube placed in water - find final temperature
- knownothing1
- · Replies 1 ·
Determine the balls initial velocity
- lovemake1
- · Replies 2 ·
Solving Isothermal Expansion Problem - Temperature Calculation
- morsel
- · Replies 4 ·
Buoyancy Force and Block Equilibrium
- lafalfa
- · Replies 2 ·
Simple Harmonic Motion: Maximum Speed of a Grandfather Clock Pendulum in cm/s
- chess10771
- · Replies 1 ·
Mirage formed by superheated air above a roadway
- cerberus9
- · Replies 1 ·
Airplane takeoff and landing kinematics with 1060 kg mass
- theresa17
- · Replies 1 ·
Why do waves need to be in phase for constructive interference to occur?
- maccha
- · Replies 11 ·
How Fast Does a Swimmer Hit the Water from 10 Meters?
- TNewC
- · Replies 14 ·
Finding support A position on a 1 m plank with supports A and B
- apphysicsgirl
- · Replies 2 ·
Plot In distance versus In time
- mysticjbyrd
- · Replies 2 ·
What is the radius of a geosynchronous satellite?
- warfreak131
- · Replies 4 ·
Kinetic energy and normal force
- Rowie25
- · Replies 2 ·
What is the magnitude of the average stopping force?
- vshah
- · Replies 5 ·
Finding Wavelength: Solving with Frequency and Length
- matt1687
- · Replies 2 ·
Triangle Electrostatics Problem
- saintv
- · Replies 3 ·
Why is the phase constant negative in part B of this graph?
- neoking77
- · Replies 4 ·
Pluto's Atmosphere: Estimating Temp
- amcelroy13
- · Replies 2 ·
Solving for Water Temperature: 4000J Added to 400g at 20°C
- reallydumb
- · Replies 5 ·
How Much Energy Input Is Needed for an Engine to Perform 10.2 kJ of Work?
- VelvetRebel
- · Replies 1 ·
Conservation of Momentum in a 2D Collision
- syntax_error
- · Replies 3 ·
Where on a rod does a collision maximize energy loss?
- Samuelb88
- · Replies 8 ·
Biot-Savart Law Difficult Problem
- 1st1
- · Replies 5 ·
Plane flying in a straight line
- justice25
- · Replies 3 ·
Classical Physics and the Bohr Model of Hydrogen Atom
- jstrike
- · Replies 1 ·
Rotational Motion-Up an Incline
- abspeers
- · Replies 1 ·
How Much Time Does a Shortened Pendulum Clock Lose in 24 Hours?
- bleedblue1234
- · Replies 4 ·
Solving 1.5 Moles Monatomic Ideal Gas at 314K - No Calc
- cdymdcool
- · Replies 1 ·
Determining Direction of Electric Field
- saintv
- · Replies 3 ·
Electrostatics Problems (all with worked out answers but wrong)
- clairez93
- · Replies 3 ·
Calculating Maximum Range of Projectile Fired at 210 m/s on Horizontal Ground
- pianogirl
- · Replies 5 ·
Uncertainty in EMF and internal resistance from V-I graph
- DanDavies
- · Replies 1 ·
What are the phase factors for the atoms in this quantum state?
- phil ess
- · Replies 2 ·
Collision with a pinned and unpinned rod on a frictionless surface
- n00bot
- · Replies 1 ·
Simple Coulomb's Law problem, struggling with basic calculus method
- mikey555
- · Replies 3 ·
Helium balloon floating at air/helium boundary
- pbbock
- · Replies 5 ·
How to Find Instantaneous Displacement in a Sinusoidal Wave?
- bolivartech
- · Replies 3 ·
Circular motion of hoop and mass
- HardestPart
- · Replies 8 ·
Conservation of Momentum and Kinetic Energy in Outer Space Collisions
- Rowie25
- · Replies 17 ·
Mechanics Problem: Finding Displacement, Velocity, and Acceleration Formulas
- lavalamp
- · Replies 3 ·
Calculate the frictional force if the ball is not slipping
- Punkyc7
- · Replies 1 ·
Vertical Circular Motion of a giant wheel
- c.melissas
- · Replies 2 ·
Cinservatuon of energy icline and spring problem
- theyo
- · Replies 3 ·
Person on skates throwing snowball forward
- Jrlandshark
- · Replies 2 ·
Rotational Mechanics (Pulley and Mass)
- Californiarol
- · Replies 2 ·
Reaction force on disk by pivot
- noob314
- · Replies 6 ·
Calculating IR Energy: 1.614 x 107 MHz
- stacker
- · Replies 2 ·
How Does the Einstein Model Estimate Excited State Probability?
- nitefalls
- · Replies 1 ·
Blocks, incline, tension and acceleration
- noob314
- · Replies 8 ·
Need to find the spring constant
- christianhood
- · Replies 2 ·
Find the Frequency of Infrared Radiation with Wavelength 160.432 µm
- stacker
- · Replies 5 ·
How Does Cutting a Spring Affect SHM Frequency and Motion Characteristics?
- godtripp
- · Replies 2 ·
What's the rms speed of the molecules?
- cdymdcool
- · Replies 4 ·
Coeffiecent of Kinetic Friction Problem
- c.melissas
- · Replies 4 ·
Horizontal Velocity Question: Which Object Falls First at 12m/s and 16m/s?
- Idrees
- · Replies 2 ·
Calculating the average speed of molecules in a gas
- matt_crouch
- · Replies 1 ·
Beat frequencies/tension force of violin strings while tuning-
- frozenguy
- · Replies 6 ·
Confidence intervals how to find?
- semidevil
- · Replies 4 ·
Need help solving Newton's second law problems
- slobodan48
- · Replies 3 ·
Angular Momentum Needed Variable Velocity
- AirChambz
- · Replies 5 ·
Calculating Force Required to Perform an Exceptional Standing Jump
- PearlyD
- · Replies 12 ·
Fluids-blow across top of straw to draw up olive oil
- ryann_117
- · Replies 1 ·
How to Minimize Sound Wave Interference Using a Tube with Variable Radius
- xavior6
- · Replies 2 ·
Changing the inertial reference frame to follow a mass in a collision
- Backup
- · Replies 3 ·
Calculating Spring Constant for Large Springs and Trampolines
- Sally99
- · Replies 8 ·
What is the average speed of the S wave in an earthquake?
- laxboi33
- · Replies 1 ·
Computing powers, functions, and exponentials of matrices
- niteshadw
- · Replies 4 ·
Work done by a pulling force at 37° above horizontal on a 20kg box
- HumKinStudent
- · Replies 5 ·
Solving a 2D inelastic collision involving cars and tricycles
- Sally99
- · Replies 5 ·
Centripetal Force and Earth's Rotation
- hoodie
- · Replies 3 ·
Build My Car: Finding the Right Axle
- eric12421
- · Replies 2 ·
Calculating Impact Force of Man Falling onto Cushion
- eureka_beyond
- · Replies 4 ·
How to Determine Resistive Force and Engine Power at Different Speeds?
- sanisydap
- · Replies 5 ·
Stone tied to string whirled. Max string tension?
- itwazntme
- · Replies 1 ·
Energy content of automobile fuel
- kbalasubramania
- · Replies 6 ·
What is the maximum velocity of a block in a spring mechanics problem?
- ronaldor9
- · Replies 1 ·
N"Simple Pulley Problem: Find Tension in String for 100N Toy on Rough Surface"
- Lokhtar
- · Replies 1 ·
Gauge pressure of water in a syringe needle
- LBRRIT2390
- · Replies 2 ·
Electron in a box - calculate the spring constant
- shimph
- · Replies 1 ·
Where is the electric field the stronger, slight annulus
- fluidistic
- · Replies 10 ·
Gauge pressure in a narrowing water tube using Bernoulli's equation
- LBRRIT2390
- · Replies 8 ·
What DC voltage and current recharge an 8.8 kWh Chevy Volt battery in 15 minutes?
- jesricha
- · Replies 1 ·
Block on Incline with oscillation
- soccer_09
- · Replies 3 ·
Calculating the time of an falling object provding with only speed.
- nikkkk
- · Replies 5 ·