Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Calculating Time of Flight for a Vertically Thrown Stone
- jernobyl
- · Replies 3 ·
How Plaque Reduces Artery Radius: Calculating with Poiseuille's Law
- cyberdx16
- · Replies 5 ·
Number of electrons transferred when charged spheres touch
- simplicity12
- · Replies 1 ·
Why does the boat move if the center of mass stays still?
- neelakash
- · Replies 9 ·
Minimum coefficient of friction to prevent slipping - torque
- ph123
- · Replies 1 ·
Gas pressure with spring-loaded piston equilibrium
- ml_lulu
- · Replies 4 ·
Solving Angular Speed of a Circular Disk
- teddygrams
- · Replies 1 ·
Flow Rate in Venturi Meter: .03825 L/s
- LikwidN2
- · Replies 5 ·
Final Velocity of Falling Paint Can
- ssb
- · Replies 5 ·
How Can You Find the Electric Field E with Given Conditions?
- Sanjay101
- · Replies 1 ·
Magnetic field between two parallel wires carrying opposite currents
- debwaldy
- · Replies 2 ·
What Determines the Breaking Point of a Bridge Under Increasing Load?
- Couperin
- · Replies 3 ·
Calculating Power Dissipated in 20 Ohm Resistor: I = 12 sin(250t)
- jesuslovesu
- · Replies 2 ·
Electromagnetic Wave: Magnetic Field Direction
- Zonda
- · Replies 4 ·
Integral of a position v time graph; meaningless?
- pakmingki
- · Replies 3 ·
Balsa Span Designs: Brainstorming Efficient Designs
- SolomonKane
- · Replies 2 ·
Does PV=nRT apply differently to gases in different cylinder volumes?
- momomo_mo
- · Replies 2 ·
Squirrel walking on rotating disk problem
- someone1
- · Replies 10 ·
Drawing Bode plots: I need to convert to s-domain - but how?
- VinnyCee
- · Replies 20 ·
Graphical methods - dynamics problem.
- jernobyl
- · Replies 11 ·
Calculating Low-Pass Filter Corner Frequency for LR Circuit
- VinnyCee
- · Replies 2 ·
What Is the Final Angular Speed of a Spinning Disk with a Running Person?
- teddygrams
- · Replies 1 ·
Essay Question on Potential Electric Energy
- jkola07
- · Replies 10 ·
Solve Lensmaker Formula for Index of Refraction with Focal Length of 7.3cm
- jst81161
- · Replies 1 ·
Finding moment of inertia about the z-axis for a point at (3r, r)
- Trojanof01
- · Replies 2 ·
Why does system 3 require the same force as system 1?
- DrHughes
- · Replies 4 ·
What is the largest theta can be if the tube is in water?
- 91619
- · Replies 3 ·
Calculate the ratio q1/q2 of the two charges
- simplicity12
- · Replies 5 ·
What is the explanation for the 1st law of thermodynamics?
- Kolahal Bhattacharya
- · Replies 26 ·
Coefficient of Kinetic Friction for incline
- Feldoh
- · Replies 3 ·
Maximum weight supported by 100lb drum with friction
- Bradracer18
- · Replies 6 ·
Internal resistance circuit problem
- Sarlizwx
- · Replies 7 ·
Finding H(s) for Circuit in s-Domain
- VinnyCee
- · Replies 5 ·
I need to ask questions about Space exploration.
- Plasma
- · Replies 1 ·
Solve Free Body Diagram: 2 Boxes, m1=35kg, m2=45kg
- cindy!
- · Replies 3 ·
Solving for Velocity and Height in an Elastic Collision with an Angle
- fishert16
- · Replies 8 ·
How Does Height Affect Momentum in a Frictionless Track Collision?
- fishert16
- · Replies 1 ·
Calculate Boat's Velocity After Package Thrown - Boat Linear Momentum Problem
- fishert16
- · Replies 2 ·
Electromagnetic waves and astronaut
- yogi41
- · Replies 7 ·
Can a Flashlight Propel an Astronaut Back to the Shuttle?
- yogi41
- · Replies 5 ·
Skateboarder jumping onto skateboard on curved ramp
- fishert16
- · Replies 9 ·
Calculating Pressure in a Narrowed Pipe
- iceman_ch
- · Replies 4 ·
What volume will the inside air expand up to?
- Rocket_guy
- · Replies 8 ·
Calculate the Difference in Height of Glycerin and Alcohol
- iceman_ch
- · Replies 3 ·
What Is the Frequency of Microwaves from This Generator?
- map7s
- · Replies 2 ·
Step up and step down transformers
- thomas49th
- · Replies 6 ·
Rotational Motion and Equilibrium
- hbailey
- · Replies 4 ·
Calculating Wavelength of Laser Beam using Single Slit
- map7s
- · Replies 1 ·
How Does Refractive Power Affect Vision Clarity at Different Distances?
- cheechnchong
- · Replies 3 ·
How do i find the ionization level of Helium
- jimmersz
- · Replies 3 ·
AP Mechanics Free Response Problem
- harmonicmotion
- · Replies 3 ·
Does Electron Flow Reverse the Conventional Current Direction?
- shehri
- · Replies 1 ·
Work done by friction force problem
- r16
- · Replies 6 ·
Harmonic motion and the coeffcieient of friction
- tahyus
- · Replies 1 ·
Find the value of the damping coefficient
- fruitl00p
- · Replies 21 ·
AP Physics C Take Home Quarterly
- Sammnyah
- · Replies 10 ·
QUeston on lorentz transformation
- TKDyl
- · Replies 4 ·
What Are the Final Velocities After an Elastic Collision Between Two Books?
- rootX
- · Replies 6 ·
How Long Before an Oscillator's Energy Halves?
- fruitl00p
- · Replies 3 ·
Finding bubble volume at surface given depth, temperature, and pressure
- Rasine
- · Replies 22 ·
Water Temperature mixing together
- strawberry7
- · Replies 3 ·
What Are the Highest and Lowest Frequencies Heard Due to the Doppler Effect?
- TheStig
- · Replies 1 ·
Calculating Minimum Coefficient of Friction for Vertical Amusement Park Ride
- chamonix
- · Replies 2 ·
Compound Microscope: Solving for Objective Focal Length
- map7s
- · Replies 1 ·
A lab on one-dimensional collisions
- a seeker
- · Replies 2 ·
Simple harmonic motion and diatomic molecules
- endeavor
- · Replies 14 ·
Calculating Airplane Velocity with Wind: A Study
- soccer5
- · Replies 3 ·
How Do You Calculate Temperature and Energy Changes in Mixed Ideal Gases?
- claudiadeluca
- · Replies 1 ·
Ideal diatomic gas in cylinder with sliding adiabatic plate
- claudiadeluca
- · Replies 1 ·
Calculate Heat for Melting 10kg Ice Block
- strawberry7
- · Replies 4 ·
How to find the maximum velocity and maximum acceleration?
- dumpman
- · Replies 5 ·
A few Electromagnetic questions
- Plasma
- · Replies 13 ·
Building a instrument that plays songs.
- AznBoi
- · Replies 7 ·
Wave-like Properties of a Cadillac Passing Through a Freeway Underpass
- dotcom
- · Replies 2 ·
Telescope lens separation for object at 5.0 m distance
- map7s
- · Replies 8 ·
Problem with nod voltage analysis se the picture
- TheNaturalStep
- · Replies 8 ·
What is the minimum applied force required to ball up a ramp?
- biochemnerd
- · Replies 11 ·
Initial electric field strength
- ralph344
- · Replies 3 ·
Building a circuit? - easy high school project sorta
- faceblah
- · Replies 1 ·
What is the sprinter's speed at the finish line?
- pingpong240
- · Replies 6 ·
What are the units for flow area, flow rate, and velocity?
- dvyu
- · Replies 4 ·
How much heat is required to melt a 25 kg block of ice and heat it to 78°C?
- linhy
- · Replies 1 ·
What is the launch speed and work done by the bow?
- biochemnerd
- · Replies 2 ·
How Do Forces Maintain Equilibrium in a Supported Shelf System?
- danago
- · Replies 3 ·
Solve Electron Deflection in Oscilloscope - 65 Characters
- dvyu
- · Replies 2 ·
How Do You Adjust Camera Settings for Post-Sunset Photography?
- kmj9k
- · Replies 5 ·
Force of contact between two blocks pushed together on a frictionless table
- dvyu
- · Replies 24 ·
Questions concerning the Theory of Relativity, sound, and light.
- Haibane
- · Replies 3 ·
Should I add cream to coffee before or after stepping away to keep it hottest?
- Backtoschool
- · Replies 16 ·
Calculating Electric Field for Varying Charge Values
- simplicity12
- · Replies 2 ·
What is the relationship between magnetic field and induced emf?
- Gyroscope
- · Replies 13 ·
How Does a Mass Spectrometer Calculate Ion Path Radius?
- TbbZz
- · Replies 4 ·
Electron drift speed in a copper wire.
- Alpha Russ Omega
- · Replies 2 ·
What is the radius of a charged ion in a magnetic field?
- TbbZz
- · Replies 2 ·
Work,Power and Energy = big headache
- biochemnerd
- · Replies 11 ·
Calculating Distance Traveled by a Skier on an Inclined Slope
- dvyu
- · Replies 2 ·
Error in Simple Pendulum experiment
- thisbmagic32
- · Replies 5 ·
Does Clothesline Sag Affect Laundry Load Capacity? Find Out Here!
- dvyu
- · Replies 6 ·
How Long Would an Electron Take to Spiral into the Nucleus?
- WolfOfTheSteps
- · Replies 9 ·
Does a stiff spring damp faster than a less stiff spring?
- a seeker
- · Replies 17 ·