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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The formulas for parallel and series connections
- Arka420
- · Replies 8 ·
Force of Falling Objects at a Height
- Samei
- · Replies 13 ·
Average power from a windmill raising water from a well
- azs8t1
- · Replies 4 ·
The sum of elastic and gravitational energy
- buonastella
- · Replies 4 ·
Why divide kinetic energy by time to find power during acceleration
- Zynoakib
- · Replies 5 ·
A rectangular conducting frame in a magnetic field
- kaspis245
- · Replies 18 ·
Calculating Difference in Gravity at Different Distances from Earth's Surface
- TANMAI
- · Replies 4 ·
Point in water wave with greatest upwards speed?
- toforfiltum
- · Replies 4 ·
Maximum terminal voltage, current and power in a battery circuit
- Fat_Squirrel
- · Replies 6 ·
Centripetal force direction at the top of a vertical loop
- Alameen Damer
- · Replies 9 ·
Pulley question -- 2 pulleys and 2 weights
- kieyard
- · Replies 28 ·
Is Centripetal Acceleration Constant in Uniform Circular Motion?
- faiziqb12
- · Replies 38 ·
Boat and plane velocity vector problems with river and wind
- victorhugo
- · Replies 3 ·
How Is the Mass of a Board Determined Using Torque and Tension?
- andy7793
- · Replies 8 ·
Angle between velocity vectors of 2D billiard ball collision?
- naianator
- · Replies 4 ·
Explanation of E-field torque and initial angle
- jonochar
- · Replies 2 ·
Finding block A's velocity in a pulley system with friction
- Zobrox
- · Replies 7 ·
Young's double slit experiment: Determine thickness of mica
- DriesBoon
- · Replies 2 ·
Solving Projectiles Problem: Ball Rolls Horizontally Off Stairway
- NooDota
- · Replies 3 ·
What does minimum normal force mean in a statics problem?
- Sarah00
- · Replies 1 ·
Graph of energy against distance
- arv88
- · Replies 5 ·
Is the answer key wrong? Physics 12U Dynamics
- Alameen Damer
- · Replies 4 ·
How Do You Calculate the Semi-Major Axis of a New Elliptical Orbit?
- teme92
- · Replies 7 ·
Kinematics Car acceleration Problem
- hiineko
- · Replies 7 ·
What is the Direction of Magnetic Force on a Moving Electron?
- Jimbob999
- · Replies 11 ·
How much distance did the fly cover?
- Delta31415
- · Replies 40 ·
Plane heading to counteract westerly wind and fly north
- RedDelicious
- · Replies 3 ·
How Does a Glass Fibre Flywheel Store Kinetic Energy in Buses?
- Katy96
- · Replies 44 ·
Why does CD depend on L in a 3D forces problem?
- VectorA
- · Replies 41 ·
Finding Forces in Truss Members for Solving Truss Problems
- VectorA
- · Replies 3 ·
Mass on a spring oscillation problem
- Katy96
- · Replies 14 ·
Natural frequency of a simple harmonic system
- TomW17
- · Replies 3 ·
Charge distribution in the universe
- patiladitya98
- · Replies 8 ·
How Do You Calculate Average Speed in Different Driving Conditions?
- hiineko
- · Replies 9 ·
Simple pendulum and acceleration due to gravity
- senan
- · Replies 21 ·
Calculating Force Magnitude with Friction and Initial Velocity
- VectorA
- · Replies 18 ·
Terminal Velocity of Cube: 1.6 m/s
- Dalip Saini
- · Replies 2 ·
Hinged bar with horizontal force: angular velocity at horizontal position
- dirk_mec1
- · Replies 5 ·
Find the Coefficient of Kinetic Friction for Crate Movement
- Dalip Saini
- · Replies 2 ·
Work Done on 500N Barbell 0.5m Above Floor
- Dalip Saini
- · Replies 5 ·
What is the significance of the 1/b factor in this differentiation problem?
- shanepitts
- · Replies 3 ·
Solving a 5.4 Earthquake Aftershock: Round to 1 Decimal Place
- JasSingh96
- · Replies 2 ·
Frictional Force vs normal force
- Dalip Saini
- · Replies 2 ·
Uniform Circular Motion of coffee cup
- buonastella
- · Replies 2 ·
Ratio between molecules having different speeds
- DavideGenoa
- · Replies 2 ·
Newton's law problem on homogeneous flexible rope
- Titan97
- · Replies 2 ·
Bungee jumper distance fallen during free fall and deceleration
- mattcom1
- · Replies 9 ·
Calculating Distance to a Wall Using Speed of Sound
- Barlock
- · Replies 31 ·
Why do the staircase and elevator climbs involve the same work?
- SimpleAsker
- · Replies 2 ·
Finding where a 1 kg sled lands after flying off a hill
- Ayso24
- · Replies 10 ·
Finding spring length when two people pull opposite ends with 190 N each
- Zynoakib
- · Replies 5 ·
Is -4m the correct displacement for average velocity calculation?
- Hannahj1
- · Replies 1 ·
Kinematics Question -- Plane heading to take into a headwind
- Hannahj1
- · Replies 7 ·
A Quick "Lesson" on Physics and sin graphs
- Ayso24
- · Replies 1 ·
Given the concurrent forces, Determine the resultant
- hiineko
- · Replies 25 ·
Lenz's Law Q: Clockwise or Counterclockwise?
- lenzlawquestion
- · Replies 3 ·
Capacitors and Dielectric Oil: Calculating Electric Displacement and Field
- teme92
- · Replies 2 ·
Calculating Maximum Acceleration in a Utility Vehicle with Additional Mass
- Khang
- · Replies 6 ·
Energy Transfer in a Block Sliding Down a Ramp and Hitting a Spring
- Zynoakib
- · Replies 1 ·
'forces in two dimensions' problem
- ilanmichaeli
- · Replies 3 ·
Calculating Thrust on Curved Surface of Cylindrical Vessel
- Pyrus
- · Replies 4 ·
Finding Acceleration and Reaction Forces in Rotating Thin Rod on a Hinge
- mli
- · Replies 2 ·
Net force on particle 1 due to particle 2 in vector form?
- Corey Bacon
- · Replies 4 ·
Why is the quantum-money analogy incorrect?
- Logan Johnston
- · Replies 3 ·
Solving Tension in Wires for Fixed Plate
- Alex.malh
- · Replies 3 ·
How Many Springs Are Needed to Safely Stop a Falling Elevator?
- Tremblay23
- · Replies 5 ·
Cut the String - Energy and Friction
- FredericChopin
- · Replies 2 ·
Calculate Remaining Anesthetic Time: Mass Flow Rate Question
- jmine
- · Replies 3 ·
Two concentric conducting spherical shells, find outer Q
- mattz205
- · Replies 13 ·
How Does the Angle of Force Application Affect Work Done on a Cart?
- Zynoakib
- · Replies 3 ·
Maximum Angle for 2D Collision: Does θmax Exist if m1 > m2?
- Luca 123
- · Replies 3 ·
Circular motion in a magnetic field
- kaspis245
- · Replies 3 ·
Help with homework problem from image
- ilanmichaeli
- · Replies 2 ·
Centripetal acceleration turntable problem
- Zynoakib
- · Replies 20 ·
What is the Charge on Each Balloon?
- Tunamy
- · Replies 3 ·
What Speed Imparts One Revolution on an Object Hanging from an Inelastic Spring?
- kaspis245
- · Replies 12 ·
Two-Dimensional Collision With Two Moving Objects
- Vold
- · Replies 8 ·
How Does Newton's Third Law Apply to Friction and Air Resistance?
- Lim Jan-Wei
- · Replies 18 ·
Prove in case of projectile d^2 (v^2 ) / dt^2 = 2g^2
- Safi Majid
- · Replies 5 ·
Calculating Average EMF in Two Coils on a Ferromagnetic Core
- James Holtum
- · Replies 7 ·
Conservation of Momentum in an Explosion
- Priyadarshini
- · Replies 9 ·
Derive the equation for d of wire (Magnetic Force Lab)
- Al3x L3g3nd
- · Replies 15 ·
Calculating Work Done during a Collision
- naianator
- · Replies 3 ·
Proving tension in rope of equilibrium system
- toforfiltum
- · Replies 55 ·
Finding distance covered by a particle with x=(t-2)² in 4 seconds
- Ishaikh
- · Replies 23 ·
I with Potential Energy compared to energy used.
- shadowpnther
- · Replies 8 ·
Elevator + Counterweight problem
- rpike
- · Replies 2 ·
Average-terminal-speed of cut-cylinder rolling down a plane
- Nathanael
- · Replies 3 ·
Collisions, using conservation of Energy
- Prannoy Mehta
- · Replies 5 ·
Why V²/R gives wrong answer for powerline resistance loss
- Brandon Hawi
- · Replies 5 ·
Two hanging masses and three strings
- Lennie
- · Replies 1 ·
How to Proove that L+ = L1 + iL2
- Afrokatak
- · Replies 1 ·
Why is my spring angular frequency negative when it should be positive?
- shanepitts
- · Replies 4 ·
Perpendicular Unit Vectors in the x-y Plane: Is My Solution Correct?
- PhotonSSBM
- · Replies 3 ·
Water Level: Effects of New Sphere on L
- Jason Domino
- · Replies 2 ·
Why Is the Angle Irrelevant in Calculating Torque?
- Dennis Heerlein
- · Replies 15 ·
Can the equation E = pc be applied to particles?
- Mr.somebody
- · Replies 9 ·
Can a Bullet Break a Bike Chain at 6m Underwater?
- Neil B
- · Replies 7 ·
Angular velocity for a physical pendulum
- NooDota
- · Replies 7 ·
Maximum energy stored in a capacitor? RLC circuit
- Luke Cohen
- · Replies 3 ·