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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What Is the Correct Angle Between Two Vectors If Their Cross Product Is Known?
- Tarrok
- · Replies 1 ·
How Does Current Flow Through an N-Channel MOSFET?
- Dembie
- · Replies 2 ·
Magnetic field uniformity problem
- Callix
- · Replies 7 ·
Two blocks on a plane with a pulley
- jeff12
- · Replies 11 ·
Stable Equilibrium of Stacked Hemispheres
- kitsh
- · Replies 1 ·
X-ray graph (characteristic X-rays)
- Matejxx1
- · Replies 4 ·
A electron cyclotron has a frequency of 2450 Hz and a magnet
- anthonyslvtr
- · Replies 3 ·
Why does the mud fly off tangentially from a rotating plate?
- PhysicStud01
- · Replies 23 ·
Distance of the final image in a compound microscope
- moenste
- · Replies 3 ·
Circuit Problem -- Two voltage sources and some resistors
- ellatha
- · Replies 14 ·
Prove inelastic collision loses the most KE?
- Chickensalad
- · Replies 1 ·
Rotational Forces on a Hollow Cylinder
- Ben Reynolds
- · Replies 4 ·
What Is the Total Work Done on a Cyclist Ascending an Incline?
- student34
- · Replies 15 ·
Particle Motion in Uniform Electric and Magnetic Fields
- Tachyon_Jay
- · Replies 2 ·
Finding the Force for Constant Velocity with Kinetic Friction
- Leedle
- · Replies 7 ·
Variation of Potential outside a PN junction
- Amal Thejus
- · Replies 2 ·
What Does B^(2t/C) Represent in Bacterial Growth Modeling?
- Niaboc67
- · Replies 1 ·
Saturation vapour pressure equation formula
- Physics rookie1
- · Replies 1 ·
Solving Simple Uniform Motion Problem: Marlene's Bicycle Ride to Jon's House
- ADMO
- · Replies 2 ·
Gauss' Law: Infinite plane with charge
- SnakeDoc
- · Replies 4 ·
Finding acceleration given mass and tension
- Rionic
- · Replies 13 ·
Solving Giant Swing Horizontal Cable Tension
- jasonchiang97
- · Replies 3 ·
Moment of inertia of a spherical shell using cylindrical shells
- minimario
- · Replies 7 ·
Conservation of Energy and Non-Conservative Forces
- Devilwhy
- · Replies 13 ·
Solve Truss Joints Using Method of Joints
- whitejac
- · Replies 6 ·
Estimating the Mass of an 18 Carat Gold Ring Using Basic Geometry
- Jimmy87
- · Replies 10 ·
Projectile Motion: Finding Final Vertical Velocity
- warguy701
- · Replies 1 ·
Experiment to show resistance is proportional to wire length
- Drizzy
- · Replies 9 ·
Finding relativistic force in terms of acceleration
- SquidgyGuff
- · Replies 2 ·
Point Charge Repulsion from Spherical Conductor?
- Subhra99
- · Replies 1 ·
How Do You Calculate the Reactions at Supports in a 3D Equilibrium Problem?
- whitejac
- · Replies 15 ·
Complex currents and voltages - current in a branch
- Rectifier
- · Replies 1 ·
Why Does the Diagram in Kleppner's Example 2.3 Seem Incorrect?
- Granger
- · Replies 1 ·
Why is μ = 3/2 kT wrong for chemical potential of ideal monatomic gas?
- Crush1986
- · Replies 6 ·
Why do equal masses fall at the same rate despite air resistance in Olympiad problem?
- faiziqb12
- · Replies 5 ·
Space elevator rope tension and geosynchronous radius
- LonePhysicist
- · Replies 2 ·
Calculate Temperature of 1 Solar Mass Black Hole
- Crush1986
- · Replies 3 ·
Conservation of Angular Momentum in a Sling Experiment
- ltl94
- · Replies 1 ·
Ratio of two masses connected by pulley
- Tasha9000
- · Replies 2 ·
Finding unknown mass from a meterstick, balanced equilibrium
- dioxy186
- · Replies 2 ·
Get time from acceleration given as a function of velocity
- harmyder
- · Replies 3 ·
Find Resultant Displacement Vector in Unit Vector Notation
- jeff12
- · Replies 14 ·
Magnetic Force/Field, Current, Inclined Plane Problem
- Callix
- · Replies 4 ·
What Is the Required Thrust Force to Launch a 590 kg Rocket?
- PhysicsStudent1
- · Replies 10 ·
Calculating forces between stars?
- Tim Wellens
- · Replies 7 ·
Proof of KE loss in inelastic collision
- Xizel
- · Replies 1 ·
3 Dimensional force applied to object
- Raios168
- · Replies 1 ·
Forces, elevator, acceleration -- I have the answer, just explain it....
- PhysicsStudent1
- · Replies 2 ·
Convert Change in Temp from Celsius to Fahrenheit
- Sondra
- · Replies 2 ·
Direction of tension of metal rod
- werson tan
- · Replies 6 ·
How to find acceleration and tension for blocks connected by a string
- Blobikins
- · Replies 10 ·
Calculating Work Done by a Variable Force
- Sarah Kenney
- · Replies 2 ·
1 dimensional kinematics with car and motorcycle
- tk24700
- · Replies 4 ·
Kinetic energy of 2 cart system
- Axel7
- · Replies 2 ·
Calculating Power at source from Intensity at distance R
- dmoney123
- · Replies 1 ·
Why does Hooke's law not work here?
- MightyDogg
- · Replies 3 ·
How to find KE and PE without mass
- alex steve
- · Replies 1 ·
Mass-Spring Systems and the Relationship Between Force, Displacement, and Energy
- Raios168
- · Replies 7 ·
Solid sphere and hollow sphere rolled down an inclined plane
- Yatin
- · Replies 3 ·
Finding the radius of a Proton's arc inside a square.
- RelativeJosef
- · Replies 2 ·
Plotting Minkowski diagram for 2 simultaneous accelerating
- aquaman
- · Replies 2 ·
Distance between the force and origin
- goldfish9776
- · Replies 31 ·
Trying to apply superposition method to circuit, not working
- TheKShaugh
- · Replies 3 ·
Negative charge - To take or not to take an abs val
- Calpalned
- · Replies 2 ·
How can I use circuit analysis to prove RI = RSRP/(RS - RP)?
- whatisgoingon
- · Replies 6 ·
What Is the Potential Energy and Force in a Central Force Orbit?
- TimeLordo123
- · Replies 1 ·
Work done by a person lifting and then throwing a ball
- Raios168
- · Replies 1 ·
Finding distance from origin using acceleration
- Entr0py
- · Replies 6 ·
Potential energy of electricity
- Calpalned
- · Replies 1 ·
Garbage can suspended in the air
- Saitama
- · Replies 42 ·
Finding Resultant Force using Component Method
- jeff12
- · Replies 5 ·
Magnitude of acceleration hwk check
- Ashley1nOnly
- · Replies 34 ·
Who Threw the Ball First in This Physics Puzzle?
- snowsnowrain
- · Replies 6 ·
Torque on a disk with charged bugs in a nonuniform magnetic field
- Anode
- · Replies 1 ·
Identify Calculations & Prefix Notation
- Meezus
- · Replies 1 ·
Work on an object moving downards
- AAAA
- · Replies 4 ·
Direction of reaction of a support
- werson tan
- · Replies 2 ·
Forum Admin.Equations for Heat Transfer Problems
- guppygould
- · Replies 3 ·
Electric Circuits Homework: R, P, V, I Solutions
- ElegantSir
- · Replies 12 ·
Elastic Collision of Identical Spheres
- proticks97
- · Replies 1 ·
Skier on incline with friction on horizontal surface
- mia_material_x1
- · Replies 23 ·
Determining the forces acting on a system
- Mr Davis 97
- · Replies 1 ·
Stone on spring: maximum height after release
- mia_material_x1
- · Replies 1 ·
Calculate how much force you would have to apply to crate?
- HaileyY
- · Replies 2 ·
Solving Force Exerted by Liquid Using Archimedes Principle
- Vibhor
- · Replies 17 ·
Finding the Electric Field Inside a Charged Sphere
- goonking
- · Replies 21 ·
Direction of Tension on Metal Rod by Cable
- werson tan
- · Replies 2 ·
A ball is thrown straight up from ground level
- Emely
- · Replies 4 ·
Which Diagram Represents Concurrent Forces?
- werson tan
- · Replies 11 ·
Ski jumper: work by gravity, speed without drag, and air resistance
- King_Silver
- · Replies 7 ·
How Much Work is Done Raising a Load with a Two-Pulley System?
- mia_material_x1
- · Replies 2 ·
Draw a circuit diagram to measure resistance of wire
- Janiceleong26
- · Replies 5 ·
Charging and discharging capacitor, differential equation
- BOAS
- · Replies 3 ·
Calculating Force on a Ball at an Angle
- faiziqb12
- · Replies 2 ·
Compton Scattering and Recoiling Electron Momentum
- CoffeeCrow
- · Replies 2 ·
Why spring and gravity do different work on a hanging mass
- Michael Ngo
- · Replies 13 ·
Pulley system w/hanging mass, two unknown masses and Mk
- Ummiya
- · Replies 7 ·
Block leaving cylindrical surface with initial velocity
- Cal Ripken
- · Replies 2 ·
Two blocks connected by springs moving in a circle
- ConorDMK
- · Replies 5 ·
Does Newton's third law apply when pushing an object until it breaks?
- RUphysics3
- · Replies 5 ·