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 does the i^ and the j^ symbol mean?
- Draco
- · Replies 2 ·
Why Does a Dead Body Float?
- amritha_sish
- · Replies 5 ·
Why Is µ Equal to tan θ in Friction Calculations?
- 1010
- · Replies 1 ·
Spring constant from scale reading and compression
- tibessiba
- · Replies 2 ·
Solving a Car Vector Displacement Problem: Calculating Total Displacement
- Sniperking
- · Replies 5 ·
Unlock M1 Level Question: Total Time to Travel 4 km
- CathyLou
- · Replies 4 ·
What Happens to an Object When Oil is Added to Water?
- iverson3504
- · Replies 12 ·
Final kinetic energy when record drops on rotating turntable
- gills
- · Replies 9 ·
Energy Conservation Spring Compression Problem
- redcard
- · Replies 7 ·
Calculating Tension in a Vertical Circle with a Demolition Ball Using Formulas
- Jrum6686
- · Replies 2 ·
Moment of inertia of three blocks on a rod about off-center axis
- princessfrost
- · Replies 6 ·
Angular velocity of an electron
- nded07
- · Replies 6 ·
How Do You Solve a Non-Inertial Frame Problem with a Pulley in a Lift?
- joker_900
- · Replies 6 ·
How Do You Calculate the Stopping Distance of a Car?
- bigtymer8700
- · Replies 11 ·
Conservation of energy (true or false)
- jumptheair
- · Replies 3 ·
Egg Drop Lab Challenge: Achieving Controlled Crushability in 8cm
- emma3001
- · Replies 4 ·
Ballistic Pendulum displacement
- kevina
- · Replies 11 ·
Finding the Resultant Force of Three Vectors
- free2rhyme12345
- · Replies 2 ·
Calculating Height from Work and Rotational Motion of a Rigid Body
- GoldShadow
- · Replies 2 ·
Stupid Buoyancy, this is getting ridiculous.
- Saladsamurai
- · Replies 8 ·
How Are Standing Sound Waves Solved?
- Kites
- · Replies 1 ·
Finding fan force from acceleration vs 1/mass graph
- Roze
- · Replies 5 ·
Photoelectric Effect and ozone layer
- fireandwater
- · Replies 2 ·
Gauss' Law With an Infinite Cylinder of Charge
- Poop-Loops
- · Replies 2 ·
How Do You Solve Vector Addition Problems?
- Bensky
- · Replies 3 ·
Rank Bulb Brightness A-F: Physics Solution
- skli
- · Replies 2 ·
Momentum question-just checking my method
- pinkyjoshi65
- · Replies 15 ·
What is the magnitude of the impulse in a ball-wall collision?
- chaotixmonjuish
- · Replies 8 ·
Work done on package by gravity: 784JNet work done on package: -37.7J
- bigtymer8700
- · Replies 5 ·
Nonuniform circular motion merry-go-round
- AvrGang
- · Replies 2 ·
How Do I Solve This Vector Displacement Problem?
- Bensky
- · Replies 5 ·
How Do You Calculate the Power Exerted by an Elevator Cable?
- KMjuniormint5
- · Replies 5 ·
What Length of Bungee Cord Should the Daredevil Use?
- twotaileddemon
- · Replies 8 ·
Thin Film Question: Finding Oil Slick Thickness
- bk999
- · Replies 2 ·
Why is y = (2m) cos (kx) dimensionally correct?
- mooneh
- · Replies 1 ·
Calculating Gas Temperature Change Using the Ideal Gas Law
- turnip
- · Replies 3 ·
How Do You Solve Rectilinear Motion Problems with Missing Data?
- Sebc
- · Replies 2 ·
How Is Work Calculated When Stretching a Spring?
- jumptheair
- · Replies 1 ·
Approximation to simple harmonic motion.
- Angelos
- · Replies 2 ·
How Do You Calculate Proton's Speed and Kinetic Energy in a Magnetic Field?
- t_n_p
- · Replies 2 ·
Rotational velocity of a system that has a mass launched at it stick to it
- ttk3
- · Replies 1 ·
Skateboarder speed needed to reach top of quarter pipe
- tibessiba
- · Replies 4 ·
Voltage Drop Across Transmission Lines
- jiten827
- · Replies 2 ·
How Does Cutting One String Affect the Acceleration of a Rod?
- delecticious
- · Replies 1 ·
Two charged spheres colliding and parallel-plate capacitor spacing
- tripz1196
- · Replies 1 ·
Physics Boat Problem involving velocity
- sympathy2
- · Replies 1 ·
Air Resistance free fall problem
- conradmiguel
- · Replies 6 ·
How Do You Solve Physics Problems Involving a Pulley System with Two Students?
- driedupfish
- · Replies 4 ·
Static equilibrium with a suspended sphere on a wall
- gills
- · Replies 5 ·
Angular Frequency for Small Oscillations
- lgmavs41
- · Replies 2 ·
Sound waves move from air to water
- starking
- · Replies 1 ·
Vector Problem: Get Home from 15.0 km Away
- janhen200
- · Replies 6 ·
Weight of block and static friction
- rcmango
- · Replies 1 ·
Moment of Inertia Problem: cylinder pivoting ona bearing
- delecticious
- · Replies 2 ·
How much will he weigh on a different planet
- rcmango
- · Replies 1 ·
Skier velocity and friction problem
- rcmango
- · Replies 3 ·
How Does Magnetic Repulsion Affect Puck Velocities in Elastic Collisions?
- pinkyjoshi65
- · Replies 15 ·
How is the particle's speed at points B and C determined?
- pcandrepair
- · Replies 12 ·
How to Determine if a Collision is in 2 Dimensions?
- pinkyjoshi65
- · Replies 13 ·
How can a 1kg block accelerate a 2kg block with a pulley system?
- Grapz
- · Replies 2 ·
Calculating the Speed of a Cylinder on a Frictional Ramp
- delecticious
- · Replies 6 ·
What is the Apparent Weight of a Pilot at the Bottom of a Loop?
- physstudent1
- · Replies 4 ·
Elevator starts from rest with constant acceleration
- splac6996
- · Replies 5 ·
Work and Kinetic Energy of cord
- saber1357
- · Replies 3 ·
Two methods for spring constant with 4 springs yield different answers
- GeoMike
- · Replies 3 ·
Maximum Static Friction Force for Spinning Disk and Block System
- splac6996
- · Replies 4 ·
Force that the wall exerts on the wedge
- klm
- · Replies 14 ·
Solving Tension Force in Plank Supported by Cables
- eraemia
- · Replies 1 ·
Capacitance and Voltage Confusion
- jendead
- · Replies 11 ·
How Does Wavelength Affect Photoelectron Production and Stopping Potential?
- Reshma
- · Replies 2 ·
Flywheel Kinetic Energy in Delivery Trucks
- BuBbLeS01
- · Replies 1 ·
Electric fields in a plane, :smile:
- JFonseka
- · Replies 6 ·
Solve Centripetal Force for m_1 in Frictionless Table
- klm
- · Replies 41 ·
How to calculate distance object traveled in completely inelastic collision?
- pebbles
- · Replies 1 ·
How Do You Calculate Angular Acceleration of a Cylinder?
- sheri1987
- · Replies 1 ·
Impulse and final velocity of billiard balls after collision
- pebbles
- · Replies 4 ·
Find the tension in each rope torque
- poloboy
- · Replies 4 ·
Maximum Deformation of Springs in a Collision: Deriving the Equations
- sumeer@dinsum.c
- · Replies 4 ·
Safer Collision: Front-end Damage vs. No Damage - Impulse-Momentum Theorem
- pebbles
- · Replies 5 ·
Calculating Average Force on a Vertical Wall from Ice Cube Collisions
- Pulk
- · Replies 5 ·
Two balls on a rod falling and hitting the ground
- troy5538
- · Replies 23 ·
What is the internal resistance r of the battery?
- robbondo
- · Replies 5 ·
How to Calculate Work Done by Friction without Coefficient of Friction?
- baseballer10p
- · Replies 18 ·
Potential Energy of a Conservative Force
- Jacobpm64
- · Replies 5 ·
Elevator 2 part Question - Box Dragging
- Larrytsai
- · Replies 8 ·
Work done stopping a car that decelerates over 25.5 m
- teriblekelly
- · Replies 4 ·
What is the speed of m2 after the spring is released?
- bulldog23
- · Replies 1 ·
Kinetic Energy Vs. Potential Energy confusion.
- teriblekelly
- · Replies 3 ·
Horizontal Speed of bullet fragment
- bulldog23
- · Replies 15 ·
Ball of mass rolling down an incline
- delecticious
- · Replies 2 ·
Calc Angular Accel of Solid Cylinder - FxR Method
- sheri1987
- · Replies 5 ·
Solving Momentum Conservation: Finding Velocity & Direction
- scott.leever
- · Replies 3 ·
Solve Forces and Acceleration for Two Crates in Contact - Casey
- Saladsamurai
- · Replies 3 ·
How do I show that each mass endures an equal and opposite change in momentum
- pebbles
- · Replies 8 ·
Linear programming constraints for skateboards and roller blades
- ineedhwhelp
- · Replies 6 ·
Calculating energy lost in collisions?
- pebbles
- · Replies 5 ·
How Do You Calculate Net Force on an Inclined Plane?
- JohnJay
- · Replies 1 ·
Boat crossing river at 1.50 m/s east, 10.0 m/s north relative to water
- Cowtipper
- · Replies 9 ·
Simple way to convert km/hr to m/s
- EvanVi
- · Replies 1 ·
Gravitational Potential Energy of an elevator
- BuBbLeS01
- · Replies 6 ·