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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Pushing a ball vs Punching a ball
- aerosmiths
- · Replies 1 ·
Global Warming: What Happens to Day Length if South Pole Melts?
- hy23
- · Replies 5 ·
Drag coefficients for torpedo shapes with different noses
- torpedohead
- · Replies 2 ·
Finding the angle of a pendulum in SHM
- t246335
- · Replies 1 ·
Find the maximum vertical height inc of the ball
- moondawg
- · Replies 1 ·
Thermal expansion and coefficient of linear expansion
- hils0005
- · Replies 1 ·
Radiation Problem: Find Surface Area of Light Bulb Filament
- brilapwnzall
- · Replies 2 ·
Mirror equations - basic math error - what is it?
- Hemingway
- · Replies 5 ·
What Is the Correct Minimum Velocity from Infinity?
- cupid.callin
- · Replies 6 ·
Why does r × m = MR²α for a hoop unwinding from a string?
- moondawg
- · Replies 1 ·
Mass of car with worn shock absorbers from SHM frequency
- Student3.41
- · Replies 3 ·
Dimensional Analysis and constant
- ment4ll
- · Replies 17 ·
Radius of electron orbit in He+ ion with given angular momentum
- gookies
- · Replies 6 ·
Finding wave speed, frequency and wavelength from y(x,t) = 2.0mm·sin(20x/m − 600t/s)
- vande060
- · Replies 3 ·
Can a Rocket Surpass the Speed of Its Exhaust Gases?
- galtspeaking
- · Replies 1 ·
Why multiply pressure by 10^5 when using P = ρgh to find depth
- iRaid
- · Replies 3 ·
Can You Determine a Star's Mass Using Its Orbital Period Around a Black Hole?
- nicholas123
- · Replies 3 ·
How do I find cord tension in Equilibrium problem?
- pokeefer
- · Replies 8 ·
How can I find a unit vector that bisects the angle between two given vectors?
- mubeen916
- · Replies 6 ·
Calculating Image Size of Dropped Ball from a Concave Mirror
- patton_223
- · Replies 1 ·
What Vertical Velocity Is Needed for a Slam Dunk?
- chris_0101
- · Replies 1 ·
Hanging of Unknown Mass on a spring
- Hypnos_16
- · Replies 14 ·
What Is the Specific Heat of the Given Metal?
- eoneil
- · Replies 7 ·
Motion in one dimension, Kinematics equations
- chuckbalzer
- · Replies 1 ·
Write Tr = T1 + T2 in vector notation
- bbarke00
- · Replies 1 ·
Crystals- filling a tetrahedral site.
- Beer-monster
- · Replies 15 ·
Work power and energy by a weight lifter
- ridsyfootball
- · Replies 3 ·
Kinematics - Packing falling from plane to ship type problem.
- btbam91
- · Replies 1 ·
Ratio of Pressures Involving Piston Strokes
- eoneil
- · Replies 3 ·
Max horizontal distance wrt variable angle
- iamalexalright
- · Replies 8 ·
Block on Wall Static Friction (Springs)
- Hypnos_16
- · Replies 4 ·
Momentum and impulse quick questions
- future_vet
- · Replies 8 ·
Angular Velocity of Analog Watch
- eoneil
- · Replies 4 ·
Time period of SHM when a spring is cut in half
- vissh
- · Replies 8 ·
How Does Reaction Time Impact Driving Distance and Safety?
- zeo2396
- · Replies 5 ·
How Is the Resistance of a Falling Wire in a Magnetic Field Calculated?
- bchubz
- · Replies 2 ·
Boat-man problem, velocity of center of mass
- Dansuer
- · Replies 4 ·
How do I make the resultant vector equal zero?
- Ohoneo
- · Replies 3 ·
Thermodynamics - Carnot Engine
- NavalChicken
- · Replies 3 ·
Forces exerted by a liquid during a tank rupture
- kvan
- · Replies 5 ·
Using Kinematics equasions to solve
- Mathewpaasch
- · Replies 1 ·
What do the numbers and letters on a breadboard mean?
- flyingpig
- · Replies 1 ·
Finding moon diameter from angle and distance
- eoneil
- · Replies 9 ·
Why Are Planetary Orbits Elliptical?
- SandeshPhy
- · Replies 1 ·
Thickness of concrete wall to have the same insulating value of 3.5 in. fiberglass
- preimmortal
- · Replies 9 ·
Static Equilibrium between 2 known points and 1 unknown
- Paul2011
- · Replies 6 ·
Circuit: Total Energy into a component over interval
- Saladsamurai
- · Replies 1 ·
Object falling; acceleration based on x
- Sheldinoh
- · Replies 12 ·
Newtons 1st Law of motion in a vacuum
- aurao2003
- · Replies 11 ·
Molecular physics (easy stupid questions )
- goneftw
- · Replies 1 ·
How Much Force is Needed to Jump?
- localrob
- · Replies 7 ·
Solve Easy Vector Problem: Find Displacement of Clock Hands from 3pm-6pm
- whizbang21
- · Replies 2 ·
How to find r subscript n in this vector problem
- ohheytai
- · Replies 3 ·
Inclined Plane-Acceleration of Object
- darkmasterz8
- · Replies 1 ·
Pulley attached to two objects with a rope
- zm500
- · Replies 3 ·
Find components of vectors on F
- bbarke00
- · Replies 1 ·
Period of mass oscillating on spring elongated 10.6 cm
- Student3.41
- · Replies 6 ·
What is the speed of a falling book dropped from 4.50m?
- Dino18
- · Replies 8 ·
Solve Physics Problem: Rafael Swinging Upward at 4.0 m/s
- Dino18
- · Replies 3 ·
How to measure the Capacitance of this circuit
- zxcvzxcv
- · Replies 13 ·
Determine u and v components of the Force F.
- bbarke00
- · Replies 1 ·
How Much Force Must a Rope Withstand in a Vertical Toy Spin?
- Haigenoob
- · Replies 18 ·
Electric field at origin from non-uniform charge distribution on rod
- Paul2011
- · Replies 6 ·
Finding Horizontal Speed of Electron in Electric Field
- Amahia11
- · Replies 3 ·
Free Fall and Tension in a cable
- swannyboy
- · Replies 1 ·
Applying Newton's Laws and solving multiple object system question
- Allen93
- · Replies 7 ·
Two fixed charges and one free to move problem.
- Cmon101
- · Replies 16 ·
Total Energy of a Geosynchronous Satellite
- AClass
- · Replies 1 ·
Electrostatic Force Exerted Between Two Protons
- tjrana0
- · Replies 4 ·
Determining the Position as a Function of Time Equation
- jmason52
- · Replies 2 ·
How Is Force Calculated on an Inclined Plane with Friction?
- vipertongn
- · Replies 8 ·
Analyzing Spacetime Diagrams: Finding Coordinates and Checking Invariance
- w3390
- · Replies 4 ·
Calculating Work Done in Moving Multiple Charges in a Cube Configuration
- cupid.callin
- · Replies 4 ·
Classical Mechanics - Drag Force
- zeromaxxx
- · Replies 5 ·
Kepler's constant and average radius of orbit
- Tyyoung
- · Replies 2 ·
Physics magnitude of avg acceleration
- sycho2
- · Replies 5 ·
How Fast Were the Spacecrafts Traveling Before Separation?
- Enaqbz
- · Replies 3 ·
Composition of 2 SHM in same direction
- vissh
- · Replies 4 ·
Does centripetal force and tension change in a vertical circle?
- binbagsss
- · Replies 2 ·
Work transfer - Introductory Thermodynamics
- Daveami
- · Replies 1 ·
Tensions at different points in a rotating rod
- vissh
- · Replies 8 ·
What is the Current in a Circuit with a Newly Introduced Inductor?
- Mandeep Deka
- · Replies 8 ·
What are the moment of inertia, angular speed, and angular kinetic energy?
- gamer1319
- · Replies 2 ·
Solving Inequalities with Integers
- vaironl
- · Replies 5 ·
Spinning friction for a small point
- James_Frogan
- · Replies 13 ·
Simple electric force problem with point masses includes picture
- 1901phoenix
- · Replies 3 ·
Atwoods - applied force - reduced acceleration
- dandy9
- · Replies 6 ·
How Does Lunar Gravity Affect a Man's Jump Distance Compared to Earth?
- picklepie159
- · Replies 4 ·
Forces on a 5m ladder leaning against a wall with a man on it
- smokee
- · Replies 7 ·
Electron Force and Electric Field
- Paul2011
- · Replies 3 ·
How Long Can a Toaster Run on 6 D Cell Batteries?
- IndiaNut92
- · Replies 12 ·
Calculating Peter Griffin's Mass Using Orbital Dynamics
- doublemint
- · Replies 4 ·
Deriving the speed of sound from pressure and density
- sammmy
- · Replies 6 ·
Finding acceleration given initial velocity and displacement
- OUmecheng
- · Replies 5 ·
Force on Charge Q at Corner of Square
- Bryon
- · Replies 3 ·
Cosmic Calculations and Kinetic Energy
- AClass
- · Replies 3 ·
Thermodynamics question; internal energy and heat?
- name_ask17
- · Replies 15 ·
Block of mass sliding down incline and colliding
- AnnieF
- · Replies 3 ·
Electric field in a coaxial cable with opposite line charges
- physicsidiot1
- · Replies 2 ·
Phase changes and energy conservation
- haquearsh
- · Replies 1 ·