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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Spiraling Towards the Center: Solving the Orbit Equation
- UrbanXrisis
- · Replies 2 ·
Solving Gauge Pressure: Automobile Tire at 20C and 50C
- ch3570r
- · Replies 1 ·
Center of mass and velocity problem
- kbyws37
- · Replies 3 ·
Calculating Rotational Speed for Wheel C: 240.7 rev/min
- hatingphysics
- · Replies 1 ·
How Does Conservation of Angular Momentum Apply to Rotational Kinematics?
- cheechnchong
- · Replies 8 ·
How do I solve this moments question?
- CathyLou
- · Replies 17 ·
Problem Involving Elastic Collision .
- bengaltiger14
- · Replies 19 ·
How Do You Calculate Torque and Rotational Inertia in Physics Problems?
- draconicspectre
- · Replies 17 ·
Find the magnitude of a block pulling a 200 lb block
- the_d
- · Replies 8 ·
The Earth's Rotational Speed: Where to Stand for Minimum Speed?
- hatingphysics
- · Replies 2 ·
Calculating impulse with force and time, but getting units wrong
- bengaltiger14
- · Replies 3 ·
Problem-Smallest radius of curvature
- petal5
- · Replies 12 ·
Constant Angular Acceleration of a wheel
- hatingphysics
- · Replies 3 ·
What Information Is Needed to Calculate the Angle of a Slide on a Hill?
- you too
- · Replies 1 ·
Person's Distance from Shore After Moving 3m: Momentum & Center of Mass
- vu10758
- · Replies 2 ·
Stopping Dist. Car @100km/h on Flat Surface
- inner08
- · Replies 3 ·
How Does Gravity on a Foreign Planet Affect Movement and Physics?
- blaster0
- · Replies 5 ·
Why does mg = mv²/R give the wrong answer for problem 8?
- muna580
- · Replies 3 ·
Charged particle at angle to magnetic field experiences force 2.4F
- MrDMD83
- · Replies 4 ·
How Is Specific Gravity Calculated for a Submerged Aluminum Cylinder in Alcohol?
- mikefitz
- · Replies 4 ·
Charged particle at what angle experiences 2.4 times the magnetic force?
- MrDMD83
- · Replies 1 ·
What is the current flowing through the aluminum rod on tilted conducting rails?
- MrDMD83
- · Replies 1 ·
Designing a Rocket Car for Maximum Distance
- Michal
- · Replies 1 ·
How Do You Calculate the Average Force Exerted on a Stuntman by Mattresses?
- BunDa4Th
- · Replies 17 ·
Why is the minimum resistance 2.4 ohms with 3 and 12 ohm resistors?
- roxas
- · Replies 1 ·
Calculating Frictional Force and Time to Move a Box Across a Floor
- Fanjoni
- · Replies 8 ·
How Does Air Resistance Affect Falling Objects?
- elitespart
- · Replies 4 ·
A 4.00 kg block is pushed along the ceiling
- chenny
- · Replies 3 ·
A girl coats down a hill on a sled
- chenny
- · Replies 3 ·
Projectile motion and inital speed problem
- sunbunny
- · Replies 10 ·
Projectile motion with people moving
- sunbunny
- · Replies 8 ·
Kinematics Problem: Speed of Current, Velocity, Direction
- ellusion
- · Replies 4 ·
How Thick Should the Aluminum Sheet Be for the Box to Float as Described?
- Menisto
- · Replies 3 ·
How Does Friction Impact Car Engine Performance Across Different Speeds?
- Tier
- · Replies 1 ·
Solving Two Pressure Problems: IV Feeding and Hydraulic Lift"
- mikefitz
- · Replies 3 ·
Finding normal force with momentum
- vu10758
- · Replies 4 ·
Calculating Angular Speed of Skaters Rotating in a Line
- physikz
- · Replies 7 ·
How much current flows through the bar?
- MrDMD83
- · Replies 2 ·
Understanding Force and Acceleration in Physics Problems
- anderrod
- · Replies 13 ·
How Do I Correctly Draw This Free Body Diagram?
- muna580
- · Replies 2 ·
Calculating Speed and Force of a 10m Dive
- tennisacerg
- · Replies 2 ·
What is the approach for solving a non-inertial pendulum problem?
- inner08
- · Replies 3 ·
Explaining the Nucleus: Positive Charges & Observations
- vfdismer001
- · Replies 2 ·
This is not a h/w question circuitry problem
- Werg22
- · Replies 2 ·
How Is Lift Force Calculated for a Helicopter?
- tennisacerg
- · Replies 1 ·
Matching positions of receiver and ball in 2D kinematics
- geoffjb
- · Replies 7 ·
Build a model plane that has to fly 20m
- physicsrules
- · Replies 3 ·
Why Did an Image Form at the Focal Point in Our Concave Mirror Experiment?
- jnimagine
- · Replies 6 ·
How Does Newton's 2nd Law Apply to Stopping Distance?
- tennisacerg
- · Replies 1 ·
What is the work done on a block as its radius decreases on a horizontal table?
- wolly6973
- · Replies 2 ·
Does an Elevator Affect Your Weight?
- tennisacerg
- · Replies 1 ·
Deriving the Inelastic 3-Body Equation for Colliding Balls with Different Masses
- GreenSabbath
- · Replies 3 ·
Finding the Tension in a String Using Newton's Laws
- AznBoi
- · Replies 2 ·
Bicycle wheel precession angle calculation error
- lizzyb
- · Replies 3 ·
How Does Kinetic Friction Affect a Bowling Ball's Motion?
- chaose
- · Replies 2 ·
Solve Statics Problem: Find Forces on Rod at Hinge & Peg
- Menisto
- · Replies 4 ·
Work and Energy Theorem and Kinetic Energy
- rmarkatos
- · Replies 3 ·
Does acceleration due to gravity increase or decrease in an elevator?
- you too
- · Replies 4 ·
Calculating Pressure Difference in a Manometer with Oil/Mercury
- mikefitz
- · Replies 1 ·
How Do You Calculate the Forces Acting on a Stick Leaning on a Bowling Ball?
- physgirl
- · Replies 1 ·
Gravitational force, impulse, and friction problems
- _Pistolkisses
- · Replies 1 ·
Designing an experiment, i no how, just need a formular
- me2
- · Replies 9 ·
Gravity's effect on velocity question
- lzh
- · Replies 22 ·
Kinetic energy of 80 kg person falling from 8 m diving board
- Warren
- · Replies 1 ·
Check my static equilibrium diagrams
- bananan
- · Replies 3 ·
Space probe deceleration with work-energy theorem
- rmarkatos
- · Replies 4 ·
Conservation of Potential Energy?
- gbdusty
- · Replies 12 ·
Where to put calculations in a scientific report
- big man
- · Replies 1 ·
How does humidity affect air density, and what is the coefficient of friction?
- ritwik06
- · Replies 12 ·
What is the Normal Force Acting on a Chair with a Box on a Slanted Slope?
- BSCS
- · Replies 4 ·
Photons and the Photoelectric Effect
- frankene
- · Replies 3 ·
Center of mass triangle problem
- nicholas1
- · Replies 1 ·
Difference betten ac and dc generators
- roxas
- · Replies 1 ·
How Do You Solve Newton's Force Problem with Given Mass and Acceleration?
- oggorilla
- · Replies 1 ·
Struggling with A.P Physics Question on kWh to Joules Conversion
- rmarkatos
- · Replies 2 ·
Block sliding up a frictionless 48° incline
- toddler
- · Replies 1 ·
Find the force that moves him in this circular motion
- rmarkatos
- · Replies 6 ·
Newton's Laws and Friction Applied to Blocks
- BSCS
- · Replies 7 ·
Currents and magnetic fields in a coil
- -_-'
- · Replies 4 ·
Newtons 2nd Law just need to get started
- toddler
- · Replies 2 ·
Friction or some force acting on momentum of an object
- parwana
- · Replies 4 ·
Does an asteroid impact change a planet's day length?
- lizzyb
- · Replies 3 ·
Finding the resultant of three forces on point J
- Iceclover
- · Replies 9 ·
Friction and critical angle question.
- Morsetlis
- · Replies 3 ·
Time for rectangular sheet to reach angular velocity with different rotation axis
- cheechnchong
- · Replies 7 ·
What Is Voyager 2's Speed After Jupiter Slingshot?
- Zonda
- · Replies 1 ·
Multiple homework problems on circular motion and energy
- Stephanie
- · Replies 2 ·
Force needed to accelerate system to 30 ft/s over 20 ft
- the_d
- · Replies 9 ·
Work and net work on a 50 kg crate pulled 40 m
- chesshaha
- · Replies 7 ·
How Do You Calculate Time from Energy and Power?
- melleyb
- · Replies 2 ·
Double-slit experiment: finding wavelength for dark fringe at bright fringe location
- Alt+F4
- · Replies 9 ·
How High Must a Propeller Fall to Match Its Rotational Energy?
- rleung3
- · Replies 3 ·
Calculating Angular Momentum of Asteroid Impact on Planet
- lizzyb
- · Replies 8 ·
Ladder problem - is there a mistake here ?
- Fermat
- · Replies 8 ·
May we equate linear KE with rotational KE?
- lizzyb
- · Replies 16 ·
What Are the Limits of an Experiment?
- moomoocow
- · Replies 2 ·
The Graph About Torque And Mass
- WARGREYMONKKTL
- · Replies 2 ·
This is way easy if you are smart
- emerica86
- · Replies 21 ·
Are there conditions for using Newton's second law?
- semc
- · Replies 7 ·