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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Crossing a River: Boat Direction and Time Calculations
- nealh149
- · Replies 5 ·
Power of Energy Transfer: Solving a 3D Vector Problem
- eraemia
- · Replies 1 ·
What percentage of the gas propellant in the completely filled propuls
- thatgirlyouknow
- · Replies 4 ·
Incline Plane / Friction Problem
- Destrio
- · Replies 6 ·
How can I apply statics principles to solve a problem with unknown forces?
- scotthands
- · Replies 1 ·
Horz./vert. components of force
- bigtymer8700
- · Replies 3 ·
Finding tension and acceleration with kinetic friction coefficient 0.26
- splac6996
- · Replies 6 ·
Vector Addition for Displacement: Finding Magnitude and Direction
- alandry06
- · Replies 7 ·
How Do You Calculate the Mass Difference Between Two Planets Based on Gravity?
- kasiu
- · Replies 14 ·
Is this the average velocity of the car?
- Icefire10304
- · Replies 13 ·
How Do You Calculate an Astronaut's Weight Ratio from Moon to Earth?
- BuBbLeS01
- · Replies 7 ·
Tension and compression in rigid bars
- mpassman
- · Replies 3 ·
Circular Plate Tension Question
- jedisoccer
- · Replies 20 ·
Derive Linear Momentum: m2(D-c)/(m1+m2)
- ingrida1
- · Replies 1 ·
Max speed on icy curve with radius 220 m
- physicsgirlie26
- · Replies 1 ·
Why Is Coulomb's Law Not Working in My Calculation?
- mujadeo
- · Replies 1 ·
Finding velocity with linear air resistance
- PHK
- · Replies 9 ·
Potential Energy Function problem ()
- ccsmarty
- · Replies 3 ·
Position Barlow Lens for 3x Image w/ Focal Length -0.05m
- recon9
- · Replies 1 ·
Calculating Tension Forces in a Frictionless Pulley System
- Destrio
- · Replies 12 ·
How Do You Calculate Tension in a String Connecting Two Blocks on a Ramp?
- shell4987
- · Replies 1 ·
Centripetal acceleration and turn time for a supersonic airplane
- BuBbLeS01
- · Replies 7 ·
What is the Velocity When a Ball Hits the Ground?
- thedram
- · Replies 1 ·
How to Solve a Coupled Motion Pulley Problem with Two Masses of Equal Weight?
- johnsonandrew
- · Replies 4 ·
Horizontal projectile problem(revised)
- mastershake15
- · Replies 15 ·
Test on monday (banked road problem)
- jrmed13
- · Replies 1 ·
Spring Potential Energy involving two springs
- kdm06
- · Replies 2 ·
Finding vector C perpendicular to A with dot product B equal to 16
- princessfrost
- · Replies 1 ·
Velocity and acceleration of a runner
- MeganH
- · Replies 3 ·
Solving a 135 N Vertical Force Problem
- lilbilly
- · Replies 5 ·
Kinetic Energy and friction problem
- Zerobu
- · Replies 1 ·
When do two runners running toward each other cross?
- MeganH
- · Replies 1 ·
When calculating escape speed why is v_f =0
- Saladsamurai
- · Replies 4 ·
How much time does the blood take to reach its final velocity?
- veena
- · Replies 2 ·
Calculating the Net Force Acting on a 2.75 kg Object
- tarzanna
- · Replies 3 ·
What was his velocity when he began accelerating ?
- veena
- · Replies 3 ·
Force on an object in circular motion
- BuBbLeS01
- · Replies 13 ·
How to Solve Horizontal Projectile Questions?
- mastershake15
- · Replies 1 ·
Calculating Energy and Friction in a Child's Descent on a 6m Slide
- ZAMM
- · Replies 12 ·
Work done by force and friction on a 28.5 kg crate pushed at constant velocity
- physicsgirlie26
- · Replies 18 ·
How Do You Solve the Projectile Motion Equations for Two Objects?
- graten2go
- · Replies 2 ·
Electric Field due to a Charged Cylinder
- PFStudent
- · Replies 9 ·
A baseball is thrown straight up with initial speed
- bugbug
- · Replies 1 ·
Understanding Goodness of Fit for Best-Fit Lines on Graphs
- MIA6
- · Replies 3 ·
What Is the Cruising Speed of the Car and the Orbital Speed of the Satellite?
- rgitelman
- · Replies 1 ·
How Do You Calculate the Net Force on a Ball in Flight?
- Panzer22
- · Replies 3 ·
Maximum Speed for Successful Roller Coaster Hill Climb
- shell4987
- · Replies 6 ·
Calculating Horizontal Distance Traveled by a Thrown Ball
- wiskeywiz
- · Replies 3 ·
Free body diagrams and Newton's third law pairs for a 4-link hanging chain
- aligass2004
- · Replies 1 ·
Calculating Acceleration of Blocks on a Ramp
- shell4987
- · Replies 3 ·
Calculating Net External Force for a Cheetah's Acceleration
- bigtymer8700
- · Replies 4 ·
How Is the X-Component of a Vector Determined Using Sine?
- stunning
- · Replies 8 ·
Is normal force always equal to weight?
- Noor123
- · Replies 1 ·
Tension and Angles of Frame on Wall
- Heat
- · Replies 8 ·
How Much Force Compresses a Spring Between Two Crates on a Frictionless Surface?
- saman_b21
- · Replies 3 ·
Drawing Free-Body Diagrams: Rock Suspended by Two Strings
- fiziksfun
- · Replies 2 ·
Finding tension in cables supporting a beam
- scotthands
- · Replies 16 ·
How Fast Must a Basketball Player Jump to Reach 85.8 cm?
- adad22
- · Replies 1 ·
Deceleration of a vehicle problem
- Probie
- · Replies 5 ·
Calculate the tension in the string
- ssj
- · Replies 67 ·
How thick should a barrier be to stop a car at 110 km/h safely?
- bree
- · Replies 2 ·
What is the Frequency of an Alternating Current with a Sin Curve?
- JBemp
- · Replies 3 ·
What was the plane's speed when the bottle was released?
- onigiri
- · Replies 5 ·
Solving Irreversible Processes: Q-W=U2-U1
- Dili
- · Replies 5 ·
How Do You Calculate Tension and Acceleration in a Two-Crate System?
- ~christina~
- · Replies 6 ·
What Forces Act on a Roller-Coaster Car in Nonuniform Circular Motion?
- afterjames
- · Replies 1 ·
Projectile motion tennis ball problem
- mxer101
- · Replies 2 ·
AC Source/ Variable Resistance
- americanforest
- · Replies 8 ·
Solve Machine Problems: Find Acceleration for Each Machine
- Leo194
- · Replies 1 ·
Finding the distance modulus and the absolute magnitude
- Benzoate
- · Replies 2 ·
What Physics Principles Determine When a Box Slips on a Ramp?
- physicsgirlie26
- · Replies 1 ·
What is the mass of block on the left?
- aligass2004
- · Replies 6 ·
Solving Banked Road Problem with Car Speeds of 48 km/h
- Bernie Hunt
- · Replies 4 ·
Finding resultant of four forces at angles to Ox
- CathyLou
- · Replies 3 ·
How Do I Express the Spring Constant with Significant Figures?
- mircobot
- · Replies 2 ·
Net electrostatic force on particle 3 in a square charge configuration
- UNG
- · Replies 2 ·
Differentiation woes with temperature/entropy relations.
- EricVT
- · Replies 3 ·
Two 1.8kg blocks with ropes accelerating upward at 4.4 m/s²
- aligass2004
- · Replies 21 ·
Can someone Equilibrium/friction
- mslena79
- · Replies 5 ·
Stretch of Vertical Spring: Oscillating at 5.87 Hz
- yuvlevental
- · Replies 1 ·
How much force does the 4kg block exert on the 6kg block?
- aligass2004
- · Replies 4 ·
What is the acceleration of a moving crate with two forces acting on it?
- flash21
- · Replies 1 ·
With what minimum speed does the ball need to be hit with to go over the net
- ~christina~
- · Replies 7 ·
How Do You Calculate Image Distance with Magnification in a Converging Lens?
- ben488
- · Replies 4 ·
How High Must a Rocket Travel for Its Weight to Be 0.4 Times Its Surface Weight?
- ahsanmhamid
- · Replies 2 ·
Calculate combined apparent magnitude of two stars
- Benzoate
- · Replies 4 ·
The brightness of a variable star
- Benzoate
- · Replies 4 ·
Understanding Vector Addition Using Unit Vectors and Magnitude and Direction
- ~christina~
- · Replies 19 ·
Finding acceleration and displacement on a velocity vs time graph
- xCanx
- · Replies 3 ·
Really Simple Magnitude Question
- Heat
- · Replies 3 ·
Car hitting police car while distracted driving problem part 2
- BlinkBunnie069
- · Replies 2 ·
What Is the Correct Coefficient of Friction Calculation?
- anglum
- · Replies 4 ·
Current ratio for wire with variable drift speed vs constant drift speed
- Winzer
- · Replies 2 ·
Two rigid rods at 40 degrees supporting a particle
- mpassman
- · Replies 8 ·
Mechanics/Projectiles/Angles/Trig. Identities?
- JamieB2
- · Replies 1 ·
How Does Friction Impact Crate Movement on a Rough Surface?
- fubag
- · Replies 6 ·
What is the position-vs-time graph for a falling object?
- HeLLz aNgeL
- · Replies 13 ·
Effective Ways to Study Mechanical Physics: Your Feedback Needed!
- Asker
- · Replies 1 ·
What Equations Calculate Thermal Radiation and Wavelength Peak Intensity?
- Gh0stman
- · Replies 1 ·
Simple pendulum lab: should I square the period before or after dividing by 50?
- MissMoon
- · Replies 4 ·