Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
What is the magnitude of the average force required to stop a
- eddiedowen
- · Replies 1 ·
Uniform distribution of charge on a plane and on a bar: conditions to
- bznm
- · Replies 1 ·
Aircraft runway question - Acceleration, Time and Final Velocity
- Molly1235
- · Replies 10 ·
Places electric potential is zero when 2 charges
- JustStudying
- · Replies 5 ·
Calculate Acceleration of Automobile at t = 4s
- davev
- · Replies 3 ·
Does Time Dilation Affect Daily Airline Travel?
- issacnewton
- · Replies 10 ·
Solve 1D Relative Motion Homework: Ball Thrown, Elevator, Tennis & Baseballs
- shizaep
- · Replies 4 ·
Weird wording, can't understand what they want
- Feodalherren
- · Replies 3 ·
Tension and Friction with Acceleration
- jonnyboy1234
- · Replies 3 ·
Coloumbs law with inverse cubic
- yusufali
- · Replies 1 ·
Determine electric field at x=1m
- jaydnul
- · Replies 7 ·
Finding resources for electricity and magnetism conceptual practice
- Baumer8993
- · Replies 1 ·
Calculating Voltage in an Electromagnet with Known Inductance and Current
- Sastronaut
- · Replies 4 ·
Position,velocity, speed, direction of travel of an electron
- nerdalert21
- · Replies 6 ·
Vector position, velocity, coordinates and speed
- nerdalert21
- · Replies 16 ·
Free-hanging string with 4 attached masses
- Nikitin
- · Replies 9 ·
How Does a Uniform Electric Field Affect Charge Density Distribution?
- smantics
- · Replies 7 ·
Question between friends - How long to travel 1 light year?
- MartinButler88
- · Replies 5 ·
How do I calculate velocity of an object if I know its Lorentz factor?
- Gurh
- · Replies 3 ·
Exponential Decay function in NMR
- Bubble22
- · Replies 6 ·
How Does Relativity Affect Bullet Travel Time in a Moving Rocket?
- dmayers94
- · Replies 1 ·
What Happens to the Power Output of Bulbs in Series When Voltage is Halved?
- nil1996
- · Replies 7 ·
Calculating useful force or force at an angle
- richard9678
- · Replies 3 ·
Gravitational force on planet orbiting a star
- Permanence
- · Replies 10 ·
At what angle should I throw a snowball 20m horizontally?
- GuN
- · Replies 3 ·
Electric field on a charge some height above the center of a disc
- PhizKid
- · Replies 2 ·
Charge Volume Density To Charge Per Unit Length
- Baumer8993
- · Replies 2 ·
Find Electric Field Around a Non-Conducting Sphere
- tuggler
- · Replies 3 ·
Stopping Potential and kinetic potential
- kougou
- · Replies 1 ·
Double slit experiment intensity distribution
- richyw
- · Replies 2 ·
What Are the Spring and Damping Constants for a Damped Oscillator?
- jbrussell93
- · Replies 6 ·
What is the Electric Field at Position D on the Equipotential Surfaces?
- 7411
- · Replies 2 ·
Why do two opposing currents cancel each other out perfectly in Ampere's Law?
- PsychonautQQ
- · Replies 1 ·
Why is my resultant displacement magnitude not matching my calculations?
- kellyb1ll
- · Replies 1 ·
How Do You Calculate Particle 2's Velocity in Particle 1's Rest Frame?
- sigma_
- · Replies 8 ·
Dielectric Charges: Polarization or Dielectricity?
- Yosty22
- · Replies 1 ·
Trouble understanding aspect of SHM
- PsychonautQQ
- · Replies 3 ·
How Does Illuminance Change With Distance in Physics Experiments?
- garet122
- · Replies 3 ·
Average speed and acceleration for the first 5K of a marathon
- physicsnobrain
- · Replies 4 ·
Pole Vaulting Kinematics Problem
- physicsnobrain
- · Replies 3 ·
Motion Diagram of Galileo's Ball Drop from Leaning Tower of Pisa
- Sylis
- · Replies 5 ·
Calculating Electric Field at Point P above Infinite Sheet
- kopinator
- · Replies 2 ·
Finding coordinates after finding the acceleration of an object
- nerdalert21
- · Replies 7 ·
Finding the Time: Kinetic Friction Lab Question
- jlewallen18
- · Replies 5 ·
Acceleration, constant velocity, deceleration
- warsno
- · Replies 7 ·
How High and Far Does a Soccer Ball Travel When Kicked?
- Psyguy22
- · Replies 5 ·
Cube of Resistor Problem - Nice one
- luiseduardo
- · Replies 7 ·
Describing A Mathematical Result
- Bashyboy
- · Replies 7 ·
Maximum range of an object projected from a height h
- rajathjackson
- · Replies 7 ·
Drawing displacement vectors on motion diagrams and adding opposite vectors
- Sylis
- · Replies 7 ·
What Is the Weight Attached in a Pulley Traction System in Equilibrium?
- Missnomer
- · Replies 1 ·
What is the uncertainty in area and volume for a right circular cone?
- Panphobia
- · Replies 9 ·
Velocity when acceleration is half-Olympiad Problem
- rajathjackson
- · Replies 1 ·
Problems with calculating the acceleration
- PhyIsOhSoHard
- · Replies 5 ·
Projectile Motion (find theta)
- bengavinb20
- · Replies 4 ·
What does rotation angle α mean in this vector problem?
- Panphobia
- · Replies 2 ·
Calculating Maximum Range of a Catapulted Rock
- Gank
- · Replies 3 ·
Minimum force to move a box along the x-axis with two given forces
- tibug
- · Replies 3 ·
Photoelectric effect with 445 nm and 410 nm light
- Turion
- · Replies 3 ·
Maximum Deviation Angle in Elastic Collision
- Saitama
- · Replies 19 ·
How can I prove i = j = k = 1 in Peter's energy equation?
- Panphobia
- · Replies 4 ·
Ranking changes in electric potential between pairs of points
- NasuSama
- · Replies 1 ·
Force on an electron between opposite point charges 47.8 cm apart
- NasuSama
- · Replies 1 ·
Finding the Minimum θ for Rock Thrown at Speed v_0
- darksyesider
- · Replies 9 ·
What is the Direction of Force in a Falling Object's Free-Body Diagram?
- Ascendant78
- · Replies 2 ·
Calculating Mass of a Structural I-beam
- MattWakes
- · Replies 3 ·
Finding Tracy's position vector from two displacement legs
- tchouhan
- · Replies 4 ·
How Long Will It Take Sam to Catch Up to John?
- harujina
- · Replies 4 ·
When can you assume dynamic equilibrium?
- Coop
- · Replies 1 ·
Finding an increase in depth, pressure and thrust
- Woolyabyss
- · Replies 4 ·
Difference in Potential Energy between two Reservoirs
- catsandtrees
- · Replies 3 ·
Why is my book using different equations to solve for velocity?
- outxbreak
- · Replies 3 ·
Static Equilibrium Two Pulleys and Weights With Ring
- 012anonymousx
- · Replies 3 ·
Finding x and y components of a vector in the fourth quadrant
- Sylis
- · Replies 14 ·
Correct formula to use for potential difference?
- outxbreak
- · Replies 1 ·
Classical block on inclined plane
- cassinova
- · Replies 4 ·
Solve King Arthur's Rock Launching Problem
- Sylis
- · Replies 2 ·
Block on incline with air resistance, no friction
- inferno298
- · Replies 2 ·
Car accelerating to 72 km/h, maintaining speed, then braking to stop
- Xidike
- · Replies 3 ·
Question regarding basic dynamics and forces involved?
- Ascendant78
- · Replies 5 ·
Finding the Velocity and Acceleration of a Car in Circular Motion
- mrcheeses
- · Replies 1 ·
What is the velocity and direction of a transverse wave on a string?
- dwn
- · Replies 2 ·
Charged, Insulating Sheet question
- StudentA1
- · Replies 2 ·
How to think about physics? / How to approach a difficult problem?
- azukibean
- · Replies 1 ·
Diver jumping from 3.00 m board with 1.75 m/s initial velocity
- Jabababa
- · Replies 7 ·
Approximate impact force upon landing with parachute
- BCHurricane89
- · Replies 1 ·
How to find the distance of a satellite with respect to the moon
- starplaya
- · Replies 12 ·
Particle with force depending on velocity and time: finding final velocity and distance
- oddjobmj
- · Replies 31 ·
Spring block system with friction
- Saitama
- · Replies 26 ·
Bernoulli's equation help for online physics course
- ttang94
- · Replies 4 ·
Constant radial and angular velocity; find magnitude of acceleration.
- oddjobmj
- · Replies 3 ·
Lorentz Contraction of Moving Line of Charge
- leonardthecow
- · Replies 14 ·
How does torque help us understand the motion of objects?
- bloupo
- · Replies 5 ·
Calculating Spectral Range of Blackbody Radiation Intensity
- kbeach
- · Replies 2 ·
Finding Electric Field from an insulating sphere
- DrKARMA
- · Replies 2 ·
What do the intermediate steps (2) and (3) mean in 1 J = 1 N m = 1 kg m² s⁻²?
- richard9678
- · Replies 5 ·
What is the charge density in a one-dimensional electric field?
- PsychonautQQ
- · Replies 5 ·
Simple circuit - parallel resistors
- B4ssHunter
- · Replies 8 ·