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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Two antenas (two waves wih the same frequency)
- sameh1
- · Replies 4 ·
Rate of Change of electric field
- sdoyle1
- · Replies 2 ·
Pressure on Bottom of Test Tube: 71.442 Pa
- jefgreen
- · Replies 3 ·
Coefficient of friction (between road and wheels of accelerating truck)
- pmp
- · Replies 3 ·
Calculating Volume & Density of a Metal Object
- jefgreen
- · Replies 22 ·
Finding the Coefficient of Kinetic Friction
- curser656
- · Replies 1 ·
Vector Situation: Find Shortest Time A to B (1000km)
- luysion
- · Replies 2 ·
Uncovering the Mystery of "-2" in Momentum X
- tanmandu
- · Replies 2 ·
Reducing Energy in an RC Capacitor: Solving for Discharge Time
- hover
- · Replies 2 ·
What is the induced emf in a coil with changing magnetic field?
- SavageWarrior
- · Replies 1 ·
Current density in wires connected in series
- CIERAcyanide
- · Replies 1 ·
Kirchhoff's Rules Homework: Current & Voltage Measurements
- lha08
- · Replies 5 ·
Total Capacitance. Parallel or Series?
- ZedCar
- · Replies 10 ·
Find the total gravitational potential energy of this system?
- mattloverss
- · Replies 1 ·
Solving the F16 Jet Fighter Turning Circle Puzzle
- mgnymph
- · Replies 2 ·
What is the minimum sampling rate for a 3KHz bandwidth audio system?
- satchmo05
- · Replies 11 ·
Problem relating to the Heisenberg's Principle
- uzair_ha91
- · Replies 2 ·
Physics power question frustrating me
- thereddevils
- · Replies 6 ·
Solve Simple Oscillation Homework: Find Max Kinetic Energy (mJ)
- jeunesse27
- · Replies 3 ·
Electric circuit with resistors in series
- thereddevils
- · Replies 5 ·
Equation of motion with linear acceleration and velocity-squared drag
- darrencubitt
- · Replies 7 ·
Help with a diffraction grating problem
- buttermilkxxx
- · Replies 3 ·
Entropy Calculation Homework: Isothermal Free Expansion
- cowcow8866
- · Replies 5 ·
Lorentz Transformation/Time Dilation
- bon
- · Replies 17 ·
What Is the Maximum Force to Apply on a Sled Before a Penguin Slips Off?
- sonic91
- · Replies 5 ·
Calculate Tension in String for Frequency of 120Hz
- thereddevils
- · Replies 3 ·
Catapult Question: Force of Friction & Kinetic Energy
- TyErd
- · Replies 16 ·
Work Done by Tension: 2m Rope, 150g Tennis Ball
- cracka97
- · Replies 1 ·
Distance between the sun and earth
- TyErd
- · Replies 2 ·
Meter Circuit: Calculating Scale Reading with and without Additional Resistor
- thereddevils
- · Replies 2 ·
Thermodynamics, heat in a copper cube transfer to water
- thereddevils
- · Replies 1 ·
Electrical Potential of Semicircle Insulating Wire
- stod
- · Replies 1 ·
Spring question(just need answer checked)
- juggalomike
- · Replies 1 ·
A particle accelerating in both magnetic and electric fields
- joriarty
- · Replies 2 ·
Solve Motion Question for Frictionless Rollercoaster
- blueparukia
- · Replies 3 ·
Magnetism/electric fields/mass spectrum help
- raindrops
- · Replies 3 ·
Centripedal acceleration and force question
- Lachlan1
- · Replies 1 ·
Acceleration of 2.0kg Block: Solve Forces/Tension Problem
- Dormin
- · Replies 2 ·
Thermodynamics - Find temperature of air in balloon
- thereddevils
- · Replies 3 ·
The Moon And The Earth, Acceleration ( Question Answered, Just need check )
- RajdeepSingh7
- · Replies 1 ·
Two Slit Interference Question
- benk99nenm312
- · Replies 3 ·
How Is Heat Transfer Calculated in a Cylindrical Tube with Insulation?
- joemama69
- · Replies 2 ·
Ratio of translational velocity to rotational velocity.
- spursfan2110
- · Replies 1 ·
Energy conservation and string tension problem
- crybllrd
- · Replies 7 ·
Conservation of energy-Moving Charges
- Moongurl767
- · Replies 28 ·
Angular velocity of a falling rod?
- spursfan2110
- · Replies 3 ·
What is the area of the sun's image on the paper?
- jacksonpeeble
- · Replies 2 ·
Understanding Transistor Voltage Amplification
- Sigurdsson
- · Replies 3 ·
Which of the following are units of momentum?
- mettjl03
- · Replies 6 ·
Ferris wheel Rotational Kinematics Question
- fleabass123
- · Replies 13 ·
Voltage difference and potential energy help
- lha08
- · Replies 5 ·
Charge on capacitors each with a battery
- reset_7
- · Replies 8 ·
Momentum Qs: Find Girl & Skateboard Velocity After Jump
- crosbykins
- · Replies 1 ·
What was the speed of the Camaro after colliding with an Escort?
- sloanmp
- · Replies 1 ·
How Much Kinetic Energy is Stored in the Spring After a Collision?
- sloanmp
- · Replies 1 ·
Solving Pendulum Questions: Length, Quick Swings, Clocks, Mount Everest & Moon
- yeopar
- · Replies 1 ·
Rocket Exhaust Gases: Initial & After 29s Acceleration
- sloanmp
- · Replies 1 ·
Temperature(thermal radiation transfer)
- Ajwrighter
- · Replies 5 ·
Linear equations-help solving for 2 unkown variables
- Strafespar
- · Replies 8 ·
Which ball has the highest velocity just before ground
- Sutitan
- · Replies 3 ·
What is the result of rotating an ellipse with eccentricity n2/n1 in optics?
- fluidistic
- · Replies 4 ·
Calculating Work, Speed & Power of a Car Climbing a Hill
- xupe33jrm
- · Replies 6 ·
Finding Current in a Circuit with 3 Switches
- CIERAcyanide
- · Replies 1 ·
Dynamics - sled up a hill with several angles?
- optoracko
- · Replies 3 ·
Tension and Speed Decrease: Determining Tension for Ball at θ = 20°
- red123
- · Replies 9 ·
Relative vectors - how do you determine?
- Trooper100
- · Replies 1 ·
Emf V & Potential Difference in a Resistor
- CIERAcyanide
- · Replies 2 ·
Finding Constant A for Independent Electric Field between Two Spheres
- yoni162
- · Replies 2 ·
Conservation of energy in elastic collision
- okgo
- · Replies 1 ·
How to Calculate the Number of Moles in a Gas Using the Ideal Gas Law?
- smashtheball
- · Replies 2 ·
Relating B and E in an electromagnetic wave
- Revvi
- · Replies 1 ·
Creating Friction Force vs. Normal Force Graph
- barthayn
- · Replies 1 ·
Why are there discrepancies in my circuit evaluation?
- master_mind
- · Replies 2 ·
Calculating Radial Acceleration in Olympic Hammer Throw
- physic1GUY
- · Replies 2 ·
How Does Charging a Ball Affect Its Pendulum Motion?
- einsteinette
- · Replies 1 ·
Miser's Gold: A Frozen Pond Rescue Plan
- crosbykins
- · Replies 2 ·
Understanding Recombination Frequencies: Distance Between Genes Explained
- sonyab523
- · Replies 1 ·
Hanging Mass Acceleration and Tension Force
- aznboi855
- · Replies 4 ·
Momentum: Glancing collisions in two dimensions
- anti404
- · Replies 5 ·
Determining impulse on baseball from bat given velocity change
- hcps-chent1
- · Replies 1 ·
Solving for Current in Resistor 2 at t = 4.00 ms
- keemosabi
- · Replies 1 ·
Why Doesn't Light Increase in Mass at High Speeds?
- idiosyncratic
- · Replies 3 ·
Inductance Formulas Homework: Find Emf & Time to Drop Below 1.25mV
- r_swayze
- · Replies 1 ·
I hope that helps. How far will Lisa compress the spring?
- octahedron
- · Replies 10 ·
Why Does Rotating Around the Y-Axis Require Less Work Than the Z-Axis?
- jwxie
- · Replies 1 ·
Solve Vector Plane Problem: Airplane to Lake 250 km Away
- Trooper100
- · Replies 1 ·
Understanding Electric Field and Potential in Capacitors
- lha08
- · Replies 1 ·
Range of wavelength from white light through a diffraction grating
- FLCL
- · Replies 1 ·
Rotation problem solved with conservation of energy.
- btbam91
- · Replies 1 ·
Magnitude/direction of the ball's acceleration
- 14h54
- · Replies 2 ·
Calculating Height of Stone Dropped from Rising Hot Air Balloon
- chuckset
- · Replies 2 ·
Calculating Work, Thermal Energy, and Heat Transfer for Hydrogen Gas
- Shayna
- · Replies 6 ·
Newton's third law is absurd: argue why this isn't true.
- Trooper100
- · Replies 9 ·
Calculating Potential Energy Changes in a Roller Coaster System
- Tmtamrak
- · Replies 3 ·
Efficiently Calculate Stopping Time for a Cyclist | Displacement Homework
- chuckset
- · Replies 1 ·
What is the temperature at the end of the process ?
- alireza83
- · Replies 2 ·
Capacitors: charge, potential difference and stored energy
- CIERAcyanide
- · Replies 2 ·
Need help elaborating different physics concepts in these statements
- leoblack9
- · Replies 2 ·
Conservation of Momentum and Kinetic Energy in 2D Collisions
- Foghorn
- · Replies 2 ·
Rotational Motion and the Law of Gravity
- Teenytiny1991
- · Replies 1 ·