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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A circuit with multiple sources of voltage
- ChessEnthusiast
- · Replies 2 ·
Lifting mass with battery-powered winch at different power levels
- RyanP
- · Replies 7 ·
What is the speed of block one when block 2 has fallen h?
- Vitani11
- · Replies 5 ·
What is the Force of Kinetic Friction?
- JustynSC
- · Replies 11 ·
Why can't we use the center of mass as a pivot for torque balance?
- Asad Raza
- · Replies 19 ·
Gravitational potential energy of a tilted teeter toy
- Lis
- · Replies 8 ·
Shouldn't force pairs equal in magnitude cancel each other?
- Varun Narayanan
- · Replies 6 ·
X ray crystallography - interpreting my graph
- Old_sm0key
- · Replies 1 ·
How Does a Time-Varying Force Affect Angular Momentum in a Dual-Radius Spool?
- Yash123
- · Replies 9 ·
Hydroelectric Power Plant Efficiency Calculation
- BrainMan
- · Replies 3 ·
Finding the equilibrium distance Rsub0 using total energy.
- joemmonster
- · Replies 1 ·
Resistance in an octahedron between adjacent vertices
- Tazi
- · Replies 3 ·
Projectile motion on inclined plane
- songoku
- · Replies 3 ·
Equilibrium of a uniform bar inclined at an angle
- Taniaz
- · Replies 41 ·
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
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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 ·