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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How do dark spot and tiny hole filters affect Fourier optics images?
- George444fg
- · Replies 4 ·
Integration in angular momentum
- Rikudo
- · Replies 2 ·
Why does it look dark between the distance stars at night?
- NnnTech
- · Replies 59 ·
Can I power things even after Zener breakdown?
- Benjamin_harsh
- · Replies 4 ·
Mechanical Waves Recorded after an Earthquake
- Harli
- · Replies 4 ·
Special relativity, a train and a light pulse
- LCSphysicist
- · Replies 3 ·
Mass swinging in a horizontal circle on 2 strings
- applesoranges
- · Replies 14 ·
Current density in a wire that is being used to charge a capacitor
- Ugnius
- · Replies 8 ·
How to find the amplitude of oscillations of a string with 5 beads?
- Redwaves
- · Replies 69 ·
Clausius-Clapeyron equation and absorbed heat
- MaxLinus
- · Replies 3 ·
Finding the value of the electric charge
- arhzz
- · Replies 8 ·
How can I plot the function g(x) = sin(πn/L) x and its corresponding g²(x)?
- Idonthave
- · Replies 13 ·
How Does Energy Conservation Apply to MCAT Physics Problems?
- Nick tringali
- · Replies 2 ·
Zero velocity for a time interval, what about acceleration?
- Monsterboy
- · Replies 7 ·
Find the intensity as function of y (interference between two propagating waves)
- LCSphysicist
- · Replies 3 ·
Design a combination of Capacitors
- Shreya
- · Replies 3 ·
Reflectivity of TiO2 film on glass with destructive interference
- LCSphysicist
- · Replies 1 ·
Back EMF vs Reverse Currents: What's the Difference?
- Benjamin_harsh
- · Replies 2 ·
Finding the resultant force, moment, and x-y coordinates
- j19063dc
- · Replies 1 ·
Finding the boat's entry time from a cosine tide equation
- songoku
- · Replies 8 ·
Velocity of vertices of a free rhombus
- guv
- · Replies 4 ·
Does Dropping the Anchor Affect the Barge's Water Displacement?
- brotherbobby
- · Replies 20 ·
Magnetic flux equation in integral form
- Einstein44
- · Replies 7 ·
Why does the larger pulley B have higher angular velocity than smaller pulley D?
- thatstheguy9
- · Replies 11 ·
Centripetal acceleration along a latitude of Earth
- mncyapntsi
- · Replies 3 ·
Trace on the screen of a C.R.O. when a deflection coil is rotated
- songoku
- · Replies 9 ·
Why is ##\text{flux} = \pi\text{intensity}##
- yucheng
- · Replies 4 ·
Relationship between horizontal range and angle of launch
- ayans2495
- · Replies 7 ·
Internal Energy of an Ideal Gas
- Fernando Rios
- · Replies 4 ·
Stick leaning on the wall, find the acceleration from the initial position
- mattlfang
- · Replies 22 ·
How to calculate the normal stress of a Howe reinforcement?
- Tapias5000
- · Replies 10 ·
EMF and how it's related to Potential Difference
- guyvsdcsniper
- · Replies 1 ·
Two observers viewed from different sources
- HakemHa
- · Replies 5 ·
Finding current density in a dielectric sphere with Ohm's law
- Angela G
- · Replies 16 ·
Calculating joint reaction forces
- Haku
- · Replies 3 ·
Temperature rise without heat energy?
- vcsharp2003
- · Replies 2 ·
Semi-circular cylinder and line charge
- Angela G
- · Replies 15 ·
Interference pattern of a fan of plane waves
- baseballfan_ny
- · Replies 2 ·
Beam current of positrons and electrons
- songoku
- · Replies 5 ·
Variation of Electric Field at the centre of Spherical Shell
- Shreya
- · Replies 27 ·
Why does a stretched object have more inertia?
- Ineedhelpwithphysics
- · Replies 8 ·
Calculating Force and Work for a Penguin Climbing up an Ice Slope
- Nick Tucker
- · Replies 5 ·
1-D Motion, calculating final velocity
- mncyapntsi
- · Replies 2 ·
Finding Multiple Angles from Sine Values on the Unit Circle
- Ethan
- · Replies 9 ·
Finding constant friction force from deceleration over distance
- es4
- · Replies 6 ·
Electrostatic potential and electric field of three charges
- Ugnius
- · Replies 3 ·
Finding force from a hockey stick collision without knowing acceleration
- Dillypuff
- · Replies 5 ·
Trouble with negative sign in this Potential Difference problem
- guyvsdcsniper
- · Replies 3 ·
Finding trajectory from acceleration using vector identities
- Einstenio
- · Replies 2 ·
Electrostatic potential energy of a non-uniformly charged sphere
- Anonymous243
- · Replies 28 ·
Block on spring with friction: finding deceleration to rest
- thatstheguy9
- · Replies 19 ·
Electron trajectory between charged plates
- MiguelBBeats
- · Replies 4 ·
Pebble accelerated by the wind with a starting velocity
- Ursa
- · Replies 2 ·
Finding mutual inductance from magnetic dipole moment
- Angela G
- · Replies 16 ·
Push/Pull Force of wheeled cart on an incline
- Rusty_Shackleford
- · Replies 7 ·
Why does refracted light from underwater objects appear displaced horizontally?
- SaltMiner
- · Replies 7 ·
Why is runner 1 faster if both have the same average velocity?
- rudransh verma
- · Replies 31 ·
Calculating Linear and Angular Motion in a Drum and Cable System
- Ebony
- · Replies 6 ·
Banked curves, coefficient of static friction
- mncyapntsi
- · Replies 9 ·
Is Free Fall Acceleration Constant Until An Object Hits the Ground?
- Jynku
- · Replies 8 ·
Trip from San Antonio to Houston
- rudransh verma
- · Replies 3 ·
Vectors in yz and xz plane dot product, cross product, and angle
- Ursa
- · Replies 8 ·
Electric potential at the center of a charged ring
- Angela G
- · Replies 12 ·
Max velocity on banked curve when tan(θ + θs) < 0
- dl447342
- · Replies 12 ·
Off by order of magnitude when calculating how much calcium is in bone
- overpen57mm
- · Replies 8 ·
Finding particle charge from Lorentz force with E and B fields
- Gustav
- · Replies 25 ·
What is the focal point of a lens in a geometrical optics problem?
- Marioweee
- · Replies 4 ·
Maximum force applied to prevent block from sliding up ramp
- dl447342
- · Replies 11 ·
Energy transformations in an IC engine cylinder
- vcsharp2003
- · Replies 30 ·
A scooterist trying to overtake truck
- rudransh verma
- · Replies 6 ·
Torque formula derivation for a particle moving in circular
- Father_Ing
- · Replies 4 ·
Why doesn't relativity work like Galilean velocity addition for light?
- Monsterboy
- · Replies 5 ·
Why add car velocities to find when two cars meet
- rudransh verma
- · Replies 16 ·
Ideal gas pressure in atmosphere with height
- baseballfan_ny
- · Replies 10 ·
Converting dB loss to watts in a 6000 ft coax cable at 20 kHz
- rwooduk
- · Replies 6 ·
Why Are My Coupled Oscillator Eigenvalues Incorrect?
- Redwaves
- · Replies 6 ·
Why does the faster car's speed give the correct head start distance?
- jerad908
- · Replies 8 ·
Solving a 2nd order non-linear DE by dimensional analysis/observation
- phantomvommand
- · Replies 3 ·
Gravitational force - I translating the wording into the formula
- lesdayy
- · Replies 8 ·
Find the temperature of Liquid A after 12 minutes
- Richie Smash
- · Replies 13 ·
Show the velocity graph of a 4.7 kg object as it moves along the x-axis
- Cb8
- · Replies 3 ·
Analyzing the Time Needed for an Airplane Roundtrip in Windy Conditions
- agnimusayoti
- · Replies 4 ·
Previous university exam problem on refraction (that I think is wrong)
- SaltMiner
- · Replies 14 ·
Electrodynamics, Electrostatic potential, electric-field
- Gustav
- · Replies 1 ·
The Force components acting on an object
- Cb8
- · Replies 3 ·
What is the eccentricity of an orbit such that Vp = 2Va?
- csmiller1993
- · Replies 5 ·
Object at rest hanging from two ropes
- mncyapntsi
- · Replies 12 ·
Amplitude of standing wave for higher frequency
- songoku
- · Replies 7 ·
Rocket motor thrust calculation from acceleration data
- Cb8
- · Replies 1 ·
Solving the Elastric 3-Body Collision Problem
- vibha_ganji
- · Replies 2 ·
A box with two springs on a frictionless table
- BrainMan
- · Replies 7 ·
Calculating Tension in a Pulley System at an Angle
- mncyapntsi
- · Replies 4 ·
Calculating particle numbers in diffusive equilibrium of a battery
- baseballfan_ny
- · Replies 6 ·
Finding acceleration when a helicopter lifts a box with a rope
- Stell
- · Replies 5 ·
Manometer -- determine height from relative pressure
- daphnelee-mh
- · Replies 2 ·
Air Resistance Problem: Dropping two balls with different masses
- Richard8786
- · Replies 2 ·
Driven oscillator amplitude steady state X(t) = ##Asin(\omega t + \delta)##
- Redwaves
- · Replies 18 ·
Work done on moving a submerged object
- Murray Inglis
- · Replies 3 ·
Displacement problem with unit vectors
- Ursa
- · Replies 4 ·