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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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 ·
Find electric field on a point due to a charged arc.
- cgar666
- · Replies 2 ·
What is the speed of the stone just before it hits the ocean?
- DocDot
- · Replies 2 ·
Truck decelerating from 40 to 20 m/s over 100 m
- dgsigala
- · Replies 1 ·