Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Highest harmonic of a string within typical human's audible range
- hemetite
- · Replies 2 ·
Circular Motion of a 8.0cm CD: Finding Speed and Revolution Using Kinematics
- reverse
- · Replies 1 ·
Projectile fired with 30 m/s horizontal and 40 m/s vertical velocity
- fewill
- · Replies 1 ·
Tension in Rope: Truck Towing 1T Car Up Hill
- milo7979
- · Replies 5 ·
Ground state of 7 electrons in infinite square well
- sabinscabin
- · Replies 3 ·
Light - Thin Film interference
- Foxhound101
- · Replies 11 ·
Parallel Plate Capacitors Being Separated
- Fizzicist
- · Replies 4 ·
Calculating Lift Force and Air Resistance in a Moving Helicopter
- PhysicFailure
- · Replies 3 ·
Calculating Change in Charge Density for a Parallel-Plate Capacitor
- just.karl
- · Replies 8 ·
If z = Ae^(iθ), why is dz = iz dθ?
- kevi555
- · Replies 6 ·
At what distance does the moon's pull on a spaceship exceed Earth's?
- brookbj
- · Replies 6 ·
How Does Acceleration Affect Pendulum Frequency?
- akan
- · Replies 4 ·
Momentum of Photon with Energy of 2500000 Ergs: 8.3*10^-10 J*s/m
- melissajohn
- · Replies 3 ·
At what angle should the gun be aimed to hit the target?
- ross the hoss
- · Replies 1 ·
The last static equilibrium problem.
- akan
- · Replies 4 ·
Answer Check for kinematic in 2-d
- Filenes
- · Replies 2 ·
Bullet hits target 2.0cm below aim point 50m away
- jarrellboog04
- · Replies 24 ·
Calculating Force and Velocity of a Launched Water Balloon
- Mike_r
- · Replies 1 ·
Lorentz transformation for spacetime coordinates at 0.8c
- fredrick08
- · Replies 18 ·
What direction does the wreckage move after two cars collide and stick together?
- aj_2008
- · Replies 2 ·
Circular Curve of a Highway problem
- mossfan563
- · Replies 5 ·
How Do You Calculate the Equations of Motion for a Skydiver with Drag?
- ko_kidd
- · Replies 1 ·
Kinetic and static frictional forces
- Leestyn
- · Replies 1 ·
How Do I Solve These Four Physics Motion Problems?
- psp101
- · Replies 3 ·
How Much Runway Does a Jet Need for Takeoff?
- OxxCloudxxO
- · Replies 8 ·
Max and min speed around banked curve
- diablo2121
- · Replies 3 ·
Path Coordinates and constant circular acceleration.
- Buckshot23
- · Replies 1 ·
How Do Charges Distribute in Series vs. Parallel Circuits?
- ally1h
- · Replies 1 ·
How Is the Electric Field Distributed Around Concentric Cylindrical Conductors?
- bodensee9
- · Replies 4 ·
Tricky Kinematics: Projectile Motion in 2D
- guty316
- · Replies 3 ·
What Inclination Angle Causes a Car to Slide Downhill at Constant Velocity?
- CaptainSFS
- · Replies 8 ·
Uniform circular motion equation
- HelloMotto
- · Replies 3 ·
Frictionless Ski Jump at an angle
- Phoenixtears
- · Replies 1 ·
Circular motion (Newton's 3 Laws)
- southernbelle
- · Replies 1 ·
How Does Ramp Angle Affect the Maximum Height Reached by a Block?
- girlsnguitars
- · Replies 2 ·
What is the charge on the droplet?
- ally1h
- · Replies 8 ·
Simple harmonic motion , Particle
- EvilBunny
- · Replies 1 ·
Ballistic pendulum: 25 g bullet at 300 m/s into 98 N block
- acissej_o3
- · Replies 4 ·
Speed and angle of raindrops relative to ground
- laxman31757
- · Replies 1 ·
Vibration Platform: Find Frequency for Rock Clatter
- gonzalo12345
- · Replies 1 ·
How Does Frictionless Slope Affect Acceleration?
- bamfdan
- · Replies 1 ·
Equations of linear motion in terms of films
- tonto995566
- · Replies 1 ·
What Acceleration Is Needed for Ion Deflection in Cancer Treatment?
- monkey888888
- · Replies 1 ·
Solving Flow Rate Problem to Increase Pipe Diameter by 5.3
- Andrusko
- · Replies 2 ·
What is the role of dimensional analysis in solving physics equations?
- mjolnir80
- · Replies 6 ·
Electric Field in Gaussian Spheres: Equilibrium and Charge Distribution
- antingtom
- · Replies 1 ·
Electric Field Inside a Cylindrical Gaussian Surface: Exploiting Symmetry
- jaejoon89
- · Replies 3 ·
How Does Gauss's Law Explain Net Flux in Electric Fields?
- jaejoon89
- · Replies 2 ·
Mass flowing through fluid at constant velocity
- waswik
- · Replies 2 ·
How Does Friction Affect Spring Motion on a Rough Surface?
- jspek9
- · Replies 3 ·
Calculating Flux for a Uniform Electric Field at an Angle
- ayestaran1
- · Replies 4 ·
Finding hinge forces when a door hangs on two hinges
- Darkalyan
- · Replies 12 ·
Maximum angle of rolling without slipping.
- synth
- · Replies 3 ·
Easy question that I'm not getting?
- dominus96
- · Replies 4 ·
What Is the Relative Velocity of Two Colliding Planets?
- lzh
- · Replies 2 ·
Finding resonant frequency and input impedance of parallel RLC circuit
- VinnyCee
- · Replies 7 ·
Calculating Elevator Acceleration and Velocity?
- crhscoog
- · Replies 2 ·
How Does the Speedometer Reading Change as an Object Falls?
- missie
- · Replies 11 ·
Resultant Magnitude of Two Forces
- ut4ever8
- · Replies 2 ·
Terminal velocity of a body of mass
- musicfairy
- · Replies 4 ·
Refraction 2: Is Larger Angle Refraction Possible?
- GillaGorilla
- · Replies 1 ·
Magnitude of the Sum of Vectors
- vrobins1
- · Replies 1 ·
Finding charge based on net force and other charges
- jelliDollFace
- · Replies 9 ·
Can you find gravitational acceleration from initial velocity and time in the air?
- Sammiches
- · Replies 1 ·
Internal Resistance: Solving for Battery Emf 9.30 V and Load 60.0 Ω
- goWlfpack
- · Replies 2 ·
How Does a Pulley System Affect Tension on an Inclined Plane?
- pikapika1
- · Replies 9 ·
How Long Does It Take to Retrieve a Floating Lunchbox in a River Scenario?
- lmlgrey
- · Replies 1 ·
Can You Solve These Challenging Physics Problems?
- tristan4040
- · Replies 1 ·
How do Newton's Laws relate to friction and inclined ramps?
- sktgurl930
- · Replies 5 ·
Calculating Acceleration for a System of Frictional Forces with Two Cubes
- am92
- · Replies 1 ·
Radii for a circular path of a proton.
- Lance WIlliam
- · Replies 1 ·
Capacitance, switches, and lightbulbs oh my
- goWlfpack
- · Replies 1 ·
Finding force Fb when Fa is 4500 N at 60 degrees
- Eternal Sky
- · Replies 2 ·
Motion diagrams and graphs for baseball thrown then hit
- zuber
- · Replies 1 ·
A problem that has force, friction on an incline
- musicfairy
- · Replies 4 ·
Acceleration in 1 dimension (Conceptual)
- skwz
- · Replies 2 ·
Finding the electric field magnitude in a parallel plate compacitor.
- nemisisnik
- · Replies 5 ·
Thief fleeing two cops with changing accelerations
- Sakha
- · Replies 1 ·
Four trains coupling - find speed of resulting train
- dsptl
- · Replies 1 ·
Force needed to accelerate hole punch with meter stick at 30°
- Larrytsai
- · Replies 1 ·
Acceleration of System of Objects w/ m1=10kg, m2=20kg
- Nanoath
- · Replies 1 ·
What Is the Correct Magnetic Field Strength at the Surface of a Wire?
- Lance WIlliam
- · Replies 1 ·
What Angle Does the Plumb Bob Make with the Vertical on a Sliding Frame?
- Jstew
- · Replies 1 ·
Is My Solution to This Force/Friction Physics Problem Correct?
- musicfairy
- · Replies 1 ·
How Do You Calculate the Damping Coefficient of a Pendulum in Water?
- math111
- · Replies 1 ·
Is the Force in r = a cos(wt) i + b sin(wt) j Conservative?
- LilithBlack
- · Replies 1 ·
Satelite Tracking: Solving My Career Advancment Puzzle
- jstrz13phys
- · Replies 2 ·
Solving Physics Homework: Find Acceleration & Tension
- Husker70
- · Replies 1 ·
How is Tension Distributed in a Massless Pulley System?
- pikapika1
- · Replies 12 ·
Floating speck of dust with charge
- roz77
- · Replies 1 ·
Water speed from garden hose nozzle at 1.5m height
- danhamilton
- · Replies 6 ·
Elevator Problem w/ app. Weight
- Bachi234
- · Replies 1 ·
Kinematics - free fall/projectile
- rhodium
- · Replies 4 ·
Force / elastic potential energy of a rubber band
- Heirot
- · Replies 1 ·
Mass and speed of (current) electrons
- Bjarne
- · Replies 2 ·
How far does the particle travel?
- hichangkyu
- · Replies 3 ·
Weighted wheel on a slope in static equilibrium
- akan
- · Replies 5 ·
Push a Block against a Wall- Static Friction
- Phoenixtears
- · Replies 2 ·
How to Solve a Tough Concept Question: Rifle Aiming Experiment
- zn23
- · Replies 3 ·
Speed of ship as fraction of speed of light
- Dannya
- · Replies 2 ·