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 work done by braking force on a decelerating car?
- Lauren0619
- · Replies 11 ·
Energy in a lightning flash and thunderstorm frequency
- MBBphys
- · Replies 14 ·
How to get the equation for 3D projectile motion?
- PlasmaRadiator24
- · Replies 3 ·
What is the Difference Between Gravitational Force and Weight?
- sassora
- · Replies 10 ·
Coriolis Force on a Race Car at 45 Degrees North
- OmegaKV
- · Replies 3 ·
Find direction of acceleration from potential-energy funct.
- Grawlix
- · Replies 1 ·
Stability of a teeter-toy-classical mechanics
- Saph
- · Replies 7 ·
What is the Relationship Between Power and Current in an Elevator's Engine?
- ChessEnthusiast
- · Replies 3 ·
Stress-strain (area under curve)
- sassora
- · Replies 17 ·
Finding initial velocity from sling rotation rate and release angle
- Just_enough
- · Replies 11 ·
Crate compressed by spring hits second spring
- MattNguyen
- · Replies 3 ·
What is the Direction of the Friction Force on a Revolving Car?
- Saitama
- · Replies 14 ·
Potential energy equation to force equation?
- MattNguyen
- · Replies 4 ·
Find drift velocity of the current carriers in the copper strip
- moenste
- · Replies 19 ·
Impedance of circuit (R, L in series. C in parallel)
- Aimen
- · Replies 5 ·
Heat Engine problem in Thermophysics
- reh
- · Replies 5 ·
Energy dissipated in the loop during mag. field change
- moenste
- · Replies 8 ·
Solve Velocity Problem: Drone Drops Bomb from 3500 ft
- fandomgeek_394
- · Replies 3 ·
What is the Mass of the Andromeda Galaxy?
- Coco12
- · Replies 5 ·
Negative impulse from tension and weight integral
- nysnacc
- · Replies 3 ·
Two electrons have ##l_1=1## and ##l_2=3##, what are L and S
- Kara386
- · Replies 8 ·
Finding the mean free path using the given values?
- joemmonster
- · Replies 2 ·
Finding the bank of a racecar track
- Jrlinton
- · Replies 10 ·
Finding the radius of a pendulum
- Jrlinton
- · Replies 2 ·
How is the fnet in this scenario 0 in both the x and y compo
- hamza2095
- · Replies 2 ·
2D elastic collision in CM Frame, velocities antiparallel?
- hsbhsb
- · Replies 1 ·
Speed of object after collision related to spring
- songoku
- · Replies 4 ·
Length Contraction of spaceships
- LeafMuncher
- · Replies 2 ·
Velocity of masses on an atwood machine?
- Vitani11
- · Replies 5 ·
Height Question: Projectile launched from a table
- fandomgeek_394
- · Replies 4 ·
Pendulum Projectile: Find Direction of Travel Formula
- Jrlinton
- · Replies 8 ·
Center of mass of a sphere with cavity removed
- 1v1Dota2RightMeow
- · Replies 4 ·
Minimum Speed for a Roller-Coaster Car to Complete a Loop without Seat Belts
- Lis
- · Replies 12 ·
How do I Calculate Average Thrust when given t, v, delta m
- BigREDgrin
- · Replies 3 ·
Time Dilation in the same frame of referance?
- Klairence Leitch
- · Replies 19 ·
What is the tension in a hockey puck swung in a horizontal circle?
- Ly444999
- · Replies 2 ·
How Does Force Affect Speed in Physics Problems?
- bestchemist
- · Replies 6 ·
What is the Force Exerted by a Falling Rod on a Hinged Support?
- member 428835
- · Replies 39 ·
What is the Relationship Between Gas Ionisation and Temperature?
- niranjan_learner
- · Replies 8 ·
How do I find the time taken by dogs to meet each other?
- Thiru07
- · Replies 31 ·
What is the current induced in a wire loop placed in a changing magnetic field?
- moenste
- · Replies 4 ·
Find voltage between nodes a and d using junction and loop rules
- Pao44445
- · Replies 8 ·
I with the free vibration of bar problem
- alexr
- · Replies 2 ·
Finding coefficient of kinetic friction from thermal energy?
- Eclair_de_XII
- · Replies 13 ·
Ball falling from height: net work, kinetic and potential energy
- jlmccart03
- · Replies 12 ·
Why does normal force equal mg*cos(θ) - mα for ice on an inverted bowl?
- sgholami
- · Replies 5 ·
Force vectors: How to determine the directions of their components
- Robb
- · Replies 1 ·
Finding ski jump distance using work-energy theorem
- Salacious Crumb
- · Replies 5 ·
Energy per unit length of a cylindrical shell of charge
- zweebna
- · Replies 1 ·
Angular momentum conservation: determine velocity of impactor
- Vitani11
- · Replies 2 ·
Inclined plane problem with friction
- AndrewC
- · Replies 1 ·
Finding wire with the right resistance
- NihalRi
- · Replies 8 ·
2-D Linear Momentum, Collision Problem
- omicronhuh
- · Replies 1 ·
Calculate the electric field using superposition
- diredragon
- · Replies 26 ·
Coulomb's Law and Metallic Sheets: Impact on Force Between Charges
- niranjan_learner
- · Replies 4 ·
Problem in a circular motion (find the max Frequency)
- Giannakoulis
- · Replies 11 ·
How do I find the equation of motion for this object?
- 1v1Dota2RightMeow
- · Replies 2 ·
Deriving the magnetic moment of a specimen in a given magnetic field
- 1v1Dota2RightMeow
- · Replies 3 ·
Taylor mechanics ch3 problem7 -- Men jumping off of a railcar
- kylinsky
- · Replies 4 ·
Find the potential energy of the particle
- 1v1Dota2RightMeow
- · Replies 3 ·
A lot of confusion about partial derivatives
- sebastian tindall
- · Replies 5 ·
How Fast Must You Travel to See Light Pulses Simultaneously?
- oa8
- · Replies 1 ·
How far has the boat moved and in which direction?
- emily081715
- · Replies 8 ·
How to sketch vector paths in a physics problem
- Iron_Man_123
- · Replies 2 ·
What is the correct formula for calculating noise level in decibels?
- Drizzy
- · Replies 3 ·
Normalized equation for particle in a ring
- Titan97
- · Replies 3 ·
Terms Allowed in Spectroscopic Structure of Calcium
- jeffbarrington
- · Replies 2 ·
Possible confusion regarding application of Kirchoff's Laws?
- Enharmonics
- · Replies 2 ·
Derive the equation for kinetic energy and gravitional energ
- Derek1997
- · Replies 21 ·
Units of orbital angular momentum QM?
- Vitani11
- · Replies 1 ·
Derivation of Applied Force in a Grade 12 Force Question
- Troutkibe
- · Replies 10 ·
What is the Resonant Frequency of a 2-Year Old's Outer Ear?
- Derek1997
- · Replies 6 ·
Incline problem with friction; alternative solution
- AdkinsJr
- · Replies 2 ·
Calculating final velocity after a puck is hit
- kinghunter
- · Replies 5 ·
Centripetal force with normal force and weight
- sens
- · Replies 1 ·
How to find trajectory as a function of time with energy
- Cocoleia
- · Replies 3 ·
Equation of magnetic field produced by a solenoid
- kregg34
- · Replies 12 ·
What percentage of the original kinetic energy is convertible?
- emily081715
- · Replies 3 ·
How does a bird create a circular path by tilting its wings?
- Blank
- · Replies 2 ·
What Does the Symbol [=] Mean in Dimensional Analysis?
- emeraldskye177
- · Replies 2 ·
Calculating reaction force for sliding plank
- sunquick
- · Replies 5 ·
Why is sqrt(Tension/(mass/lenght)) = f*lambda - Standing Waves
- Bastian
- · Replies 5 ·
A different type of roller coaster loop problem
- JustinT
- · Replies 16 ·
Calculating Electric Field Strength of a Charged Metal Sphere
- Matticus9
- · Replies 2 ·
How to identify whether a doped semiconductor is n-type or p-type
- moenste
- · Replies 10 ·
Dynamics in two dimensions problem
- BrainMan
- · Replies 6 ·
Finding force, turning points and speed from a potential energy graph
- Jrlinton
- · Replies 3 ·
Finding static friction from circular motion
- Zynoakib
- · Replies 6 ·
Sun's rotation rate if it collapsed to a 10 km neutron star
- Vitani11
- · Replies 7 ·
Isobaric compression: different internal energy results
- dUDEonAfORUM
- · Replies 2 ·
Archived Coefficient of performance for a refrigerator
- rmjmu507
- · Replies 1 ·
Archived Two shafts connected by clutch: moment of inertia and angular impulse
- Renni202
- · Replies 1 ·
Why does the value of u change with the orientation of the loop?
- Drizzy
- · Replies 9 ·
Implied Precision: Is It 0.005 or 0.01?
- emeraldskye177
- · Replies 5 ·
Resistance of a Wire at varying temperatures
- Enharmonics
- · Replies 1 ·
Calculating Angular Velocity and Linear Acceleration in a Speed Skater's Curve
- Katie Morton
- · Replies 8 ·
How do I calculate the height of a bridge using one dimension?
- fandomgeek_394
- · Replies 7 ·
Which Direction Will the Induced Current Flow?
- Biker
- · Replies 3 ·
How do I interpret and graph Newton's second law data?
- AlexandraMarie112
- · Replies 1 ·
How to find force from volumetric flow rate and pressure
- bl965
- · Replies 5 ·