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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Stealth aircraft coating thickness
- Galahad43
- · Replies 1 ·
Ladder Equilibrium: Solving for Forces at Hinged Point?
- azwraith69
- · Replies 3 ·
Light through two polarizers at 62° angle
- Galahad43
- · Replies 1 ·
How Much Energy is Needed to Convert Water to Ice Using a Carnot Refrigerator?
- vincristine
- · Replies 1 ·
Ranking magnetic and electric forces on a charged particle
- ihearyourecho
- · Replies 11 ·
Is there any normal stress on torsional member?
- 385sk117
- · Replies 1 ·
Solving for friction with only acceleration
- wmdavid
- · Replies 1 ·
Dipole term in a quadrupole expansion
- yoghurt54
- · Replies 5 ·
What is the Torque Produced by a Beam and Sign on a Wall?
- _wolfgang_
- · Replies 4 ·
Sun Losing Mass due to Energy Radiation
- bon
- · Replies 2 ·
Spacing between slits in a diffraction grating w/o known wavelength
- chanderson
- · Replies 1 ·
Does high resistance mean less current and more voltage across a resistor?
- lha08
- · Replies 1 ·
Where Is Zero Gravity Between Earth and Moon?
- nilic1
- · Replies 4 ·
Motion with Uniform Acceleration
- WannaLearn
- · Replies 7 ·
Tom and Jerry Space Travel: Calculating Speed & Weight
- TyErd
- · Replies 4 ·
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 ·
Finding volume and density from spring scale readings in water
- jefgreen
- · Replies 22 ·
Finding the Coefficient of Kinetic Friction
- curser656
- · Replies 1 ·
Vector Situation: Find Shortest Time A to B (1000km)
- luysion
- · Replies 2 ·
Where does the -2 come from in Δp_x = -2mv cos(θ)?
- 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 ·
Why does Kirchhoff's junction rule not equal zero in my ammeter readings?
- 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 ·
Maximum kinetic energy of oscillating mass on spring
- 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 ·
Wavelength from diffraction grating with 5950 lines/cm at 18°
- buttermilkxxx
- · Replies 3 ·
Finding final pressure in isothermal free expansion with piston
- 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 ·
Mass spectrometer velocity selector potential difference
- 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 ·
Finding Earth-Moon distance from orbital period and surface gravity
- 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 ·
Difference between potential difference and voltage difference
- 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 ·
How do pendulum length and location affect period and timekeeping?
- yeopar
- · Replies 1 ·
Rocket with mass ejection rate 60 kg/s: acceleration at start and after 29 s
- sloanmp
- · Replies 1 ·
Temperature(thermal radiation transfer)
- Ajwrighter
- · Replies 5 ·
Solving x+y=12 and xy=35 for two unknowns
- 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 ·
Car climbing a hill: work, speed, and power with energy conservation
- 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 ·
Finding tension and deceleration of a 30 kg ball at θ = 20° on a pendulum
- red123
- · Replies 9 ·
Relative vectors - how do you determine?
- Trooper100
- · Replies 1 ·
Finding potential difference across resistor and battery internal resistance
- 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 ·
Recombination frequency and map units for two genes
- sonyab523
- · Replies 1 ·
Hanging Mass Acceleration and Tension Force
- aznboi855
- · Replies 4 ·
Two-ball collision with one ball moving at 30 degrees north
- 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 ·
Finding induced emf in a decaying inductor current
- 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 ·