Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Did the incoming car's brakes fail going downhill in this cliff collision?
- zachk19
- · Replies 1 ·
Energy and Center of Mass Problem
- bohobelle
- · Replies 2 ·
Energy of a Hydrogen Flouride molecule in normal mode vibration
- Dixanadu
- · Replies 1 ·
Challenging physics problem with spring, oscillations and moment of inertia?
- Kratos321
- · Replies 7 ·
Special Ratio problem (not a math problem. It's the physic problem)
- NasuSama
- · Replies 13 ·
Conservative Forces and Fg Questions
- BizzPhizz
- · Replies 5 ·
Coefficient of static friction and kinetic friction problem
- flemonster
- · Replies 6 ·
Newtons laws/weight/acceleration/force
- lilkiddykid4
- · Replies 1 ·
How Do I Calculate the Torque on a Tooth's Root About Point A?
- riseofphoenix
- · Replies 8 ·
How do I prove I=(V(sub b))/R*e^-t/RC experimentally
- Dester
- · Replies 1 ·
How Does a Man's Movement Affect the Angular Speed of a Merry-Go-Round?
- DLH112
- · Replies 4 ·
Rotational and Translational Kinetic Energy - marble and bowl problem.
- binbagsss
- · Replies 4 ·
Why why why? Sum of torque, changes in directions? This is
- riseofphoenix
- · Replies 3 ·
Force diagram for ring/bead problem
- PhizKid
- · Replies 25 ·
How far can the ant walk before slipping off the record?
- cdornz
- · Replies 8 ·
Relating moment of Inertia and pendulum oscillation
- heatherro92
- · Replies 3 ·
How to calculate daytime from a graph
- Deathnote777
- · Replies 2 ·
What is the Radius of an Electron Trajectory in a Magnetic Field?
- 11thHeaven
- · Replies 4 ·
Why is enthalpy change zero in an isothermal process?
- sachin123
- · Replies 4 ·
Calculate the percentage increase in mass
- ASidd
- · Replies 1 ·
Rotation and varying friction coefficient
- Saitama
- · Replies 20 ·
Tension in a spinning rope using differential equations
- sapsapz
- · Replies 22 ·
Average magnitude of force during a 0.4 second impact
- Crushgear64
- · Replies 1 ·
Maximum Acceleration for Crate on Moving Flatbed
- landerson888
- · Replies 2 ·
Engery Conservation in Oscillatory Motion
- Julio Cesar
- · Replies 3 ·
Simple problem about the torque?
- nchin
- · Replies 4 ·
Bullet lodged in rotating rod: angular momentum conservation
- nchin
- · Replies 5 ·
2D completely inelastic collision question
- Hoodoo
- · Replies 6 ·
Minimum and maximum angle to clear a 10 m goal post
- tomstringer
- · Replies 1 ·
Magnet moved through copper ring
- Padenton
- · Replies 1 ·
Finding Tensions (3 strings and 1 mass)
- Prima
- · Replies 2 ·
Question regarding electric circuits and current
- 950315
- · Replies 7 ·
Work done by friction on potted plant
- Lolagoeslala
- · Replies 4 ·
Calculating Energy Transfer and Work Done by a Crane
- Lolagoeslala
- · Replies 1 ·
Minimum possible kinetic energy in an interaction
- Neutrinogun
- · Replies 2 ·
Box moving up a slope by a force
- BWE38
- · Replies 5 ·
How Does a Car's Momentum Change If Its Kinetic Energy Doubles?
- Lolagoeslala
- · Replies 3 ·
What is the Maximum Height of a Pendulum with Given Initial Conditions?
- 99wattr89
- · Replies 2 ·
Calculating Orbital Periods for Spherical Planets in Orbit
- NasuSama
- · Replies 6 ·
Inelastic collision angular acceleration problem
- llisle39
- · Replies 5 ·
Roller coaster friction problem?
- bohobelle
- · Replies 4 ·
How does melting polar ice affect Earth's moment of inertia and day length?
- riseofphoenix
- · Replies 1 ·
Why Is Lowering a Box Considered Negative Work While Gravity Does Positive?
- Lolagoeslala
- · Replies 2 ·
Fluid Mechanics and SHM question Question
- Swaraj M
- · Replies 1 ·
Determine magnitude and direction of the force exerted on the floor
- cdornz
- · Replies 11 ·
What happens to a current source when you replace an inductor with a short circuit?
- Jebus_Chris
- · Replies 5 ·
Distance and direction of one leg of a sailboat sail.
- cdornz
- · Replies 6 ·
How does period change when mass or spring constant changes?
- Julio Cesar
- · Replies 1 ·
Astronomical telescope: derivation - greatest magnification (detail) formula
- jemerlia
- · Replies 1 ·
Energy when going down the escalator
- dawn_pingpong
- · Replies 1 ·
Finding effective resistance of parallel resistors using Kirchhoff's rules
- Flucky
- · Replies 9 ·
What is the Largest Nuclear Fission Model?
- dazza95
- · Replies 2 ·
Antoher Irodov's Problem. Could it be a mistake?
- jaumzaum
- · Replies 7 ·
Difficult 2D Kinematics Question
- michaelplease
- · Replies 7 ·
Does the Force Constant of a Spring Remain the Same When Cut into Two Halves?
- projjal
- · Replies 2 ·
Elastic collision problem involving nuclei
- Hoodoo
- · Replies 7 ·
CRO display (involve D.C and A.C)
- 950315
- · Replies 2 ·
Thermodynamics - Adiabiatc Expansion
- kineticwave
- · Replies 9 ·
RC circuit with two equal capacitors: find capacitance when each reads 40V
- 54stickers
- · Replies 13 ·
Is the Force Described by F = A(10ai + 3xj) Conservative?
- Ishida52134
- · Replies 7 ·
When and Where Do Planetary Systems Form?
- oldspice1212
- · Replies 6 ·
How Much Ice Melts When Shot with a Lead Bullet?
- Bennigan88
- · Replies 1 ·
Elastic collision and kinetic energy problem?
- LarryJ
- · Replies 6 ·
Stiffness in mass spring system
- Smileyxx
- · Replies 6 ·
Why we multiply charges in the coulomb's law equation
- jonah.seler
- · Replies 4 ·
Small Body on a Sphere loss of contact
- jill2040
- · Replies 5 ·
Solving the Bomb Explosion Problem
- strugis
- · Replies 8 ·
Motion, Finding stopping distance
- TheRedDevil18
- · Replies 6 ·
Finding the inertia with a thin rectangular sheet
- kgianqu2
- · Replies 3 ·
Measuring voltages with Ammeters and Voltmeters
- michela02
- · Replies 13 ·
Using Kepler's Law to find speed of a comet in orbit
- johannaposey
- · Replies 8 ·
Cancelling the Earths magnetic field
- deborahcurrie
- · Replies 6 ·
Dropping a closed loop into a magbetic field
- sgstudent
- · Replies 4 ·
Are overdischarged batteries a fire risk?
- Workout
- · Replies 6 ·
Mass of block given μK and Force?
- Ace.
- · Replies 17 ·
Force between blocks in contact on a frictionless surface
- pleasehelpme3
- · Replies 2 ·
Tricky Torque Problem: Solving for Tension and Understanding Beam Forces
- Arooj
- · Replies 5 ·
Can you deduce the coefficient of restitution from impace force plot?
- mokwana1221
- · Replies 13 ·
How can I calculate air resistance without knowing the reference area?
- jff0404
- · Replies 2 ·
Gravity and torque on balls rolling down an incline
- lsginn
- · Replies 2 ·
Calculating Rotational Parameters of a Rotating Sphere
- mistermangos
- · Replies 4 ·
Physics Net Force Incline problem
- salmanamin
- · Replies 1 ·
Finding molar specific heat at constant pressure
- dinospamoni
- · Replies 3 ·
Force -displacement graph question
- Lolagoeslala
- · Replies 1 ·
What are some project ideas using semiconductor devices and other components?
- Saitama
- · Replies 6 ·
You are standing on top of a building. Two balls are thrown
- valhallast
- · Replies 1 ·
Physics Kinetic and Static fricton problem
- salmanamin
- · Replies 1 ·
Wave pulse displacement graph for spring compression
- trivk96
- · Replies 6 ·
Conservation of energy with kinetic energy and spring
- Lolagoeslala
- · Replies 23 ·
Are My Equations Correct for Kirchoff's Rules?
- Workout
- · Replies 2 ·
Unit vectors and direction cosines
- Ragnarok7
- · Replies 4 ·
Proton velocity(magnitude and direction)
- jason shaw
- · Replies 4 ·
Soliton Solutions in Wave Theory
- Sage Lee
- · Replies 2 ·
Why Is My Physics Professor Giving Contradictory Advice?
- Pork
- · Replies 2 ·
Determine resolution of use by modelling it as single slit
- twinklestar28
- · Replies 5 ·
How to Calculate the Components of Forces and Acceleration in Physics Problems?
- vriti1D
- · Replies 1 ·
Circular motion, unbalanced-balanced forces
- pt20army
- · Replies 2 ·
Kinetic Energy rotational and translational conceptual question.
- bdh2991
- · Replies 6 ·
How to find acceleration of 2 masses on a pulley on slanted plane
- infinitylord
- · Replies 2 ·