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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Finding the excess electrons per lead atom
- Physicslearner500039
- · Replies 2 ·
Solving Waves on a Metal Rod with kx + Φ
- LCSphysicist
- · Replies 3 ·
Degrees of freedom of a water molecule
- LCSphysicist
- · Replies 8 ·
Can a second transverse wave pulse overtake the first on a string?
- Abdullah Almosalami
- · Replies 2 ·
What exactly is pulling the man up/down in rocket?
- Benjamin_harsh
- · Replies 5 ·
Length contraction and Time dilation for LIGHT?
- Stephen Bulking
- · Replies 8 ·
Did I Calculate the Speed of a Comet Correctly?
- Albertgauss
- · Replies 6 ·
Calculate the New Velocity and the Velocity of a Pendulum Mass
- Justinboln
- · Replies 1 ·
Fundamental frequencies in a violin string.
- LCSphysicist
- · Replies 3 ·
Clausius clapeyron and heat capacity
- B4cklfip
- · Replies 1 ·
Rigid body sliding without overturning
- gonza178
- · Replies 17 ·
Why does moving a charge between grounded plates not change induced charge?
- Jacob White
- · Replies 9 ·
Friction factor from Reynolds number in pipe flow
- sci0x
- · Replies 7 ·
Change in a rocket's kinetic energy
- Miraj Kayastha
- · Replies 5 ·
Angle of deviation from a magnetic field
- tanaygupta2000
- · Replies 5 ·
When does water evaporate vs steam condense in a phase change problem?
- NickDime
- · Replies 12 ·
Why use negative mass for a circular gap when finding centroid
- JC2000
- · Replies 12 ·
(Conceptual Problem) Whether the ball can pass through the basket
- daphnelee-mh
- · Replies 26 ·
Conceptual Problem - Static Equilibrium
- daphnelee-mh
- · Replies 20 ·
What is a "Torsional Constant"?
- Gourab_chill
- · Replies 11 ·
What is the algebra concept used to derive time dilation formula?
- Woopa
- · Replies 4 ·
Coupling Efficiency of LED to Fiber Optic Guide
- BenPhysicist
- · Replies 3 ·
Mean Free Path of Air Molecules
- cwill53
- · Replies 5 ·
Torque on Left Foot of Man in Rotating System
- KDPhysics
- · Replies 12 ·
Electric field in a spherical shell
- curiosissimo
- · Replies 2 ·
Energy conservation of metallic balls
- A13235378
- · Replies 3 ·
Equations for the velocity of progressive travelling waves
- LCSphysicist
- · Replies 3 ·
System subject to a driving force
- LCSphysicist
- · Replies 13 ·
Measuring Blocks Equilibrium Displacements
- LCSphysicist
- · Replies 4 ·
Energy consumed for same work with different power?
- shivaprasadvh
- · Replies 20 ·
Understanding Momentum Conservation in Simple Harmonic Motion
- Prabs3257
- · Replies 2 ·
The location of the point with lowest kinetic energy
- songoku
- · Replies 9 ·
How to simplify this capacitor circuit?
- Frigus
- · Replies 21 ·
What is the correct expression for the total moment of inertia in this scenario?
- Nexus99
- · Replies 19 ·
(Check solution) Conceptual problem about the equilibrium of a rigid body
- daphnelee-mh
- · Replies 18 ·
Finding trajectory from parametric equations with trig functions
- Kitanov
- · Replies 7 ·
Calculating cosmic velocities using different frames of reference
- etotheipi
- · Replies 12 ·
Which direction should you aim to shoot a fish using a laser gun
- songoku
- · Replies 3 ·
Beats and superposition > doubt about the math
- LCSphysicist
- · Replies 12 ·
How to calculate R1 and R2 in this RC circuit
- derrickj585
- · Replies 3 ·
Double pendulum equations of motion using Newton's laws
- BayMax
- · Replies 8 ·
Experiment involving surface tension for water and alcohol
- sagigever
- · Replies 2 ·
(I.E. Irodov problem 1.72) Dynamics problem involving a pulley
- Adesh
- · Replies 28 ·
Driven mass on a circular path with coupled spring forces
- LCSphysicist
- · Replies 4 ·
Finding the Line of Motion of Two Particles
- tanaygupta2000
- · Replies 16 ·
(Conceptual- Planar Kinetics) How to maintain the position
- daphnelee-mh
- · Replies 1 ·
Deriving elastic collision formulas by dividing equations
- iwsc
- · Replies 12 ·
Oscillations with fluid and pendulum
- LCSphysicist
- · Replies 2 ·
Compression of a superconducting spring
- etotheipi
- · Replies 9 ·
Two masses, a rope and a spring
- Nexus99
- · Replies 9 ·
Resonance in coupled oscillator system with driving force
- LCSphysicist
- · Replies 1 ·
Lifting height of a box in a truck going over a speed bump
- jamesdhurai
- · Replies 12 ·
To find the Acceleration of a Pentagonal metallic plate
- Amitkumarr
- · Replies 6 ·
What is the Period of Oscillation for a Spring Cut to One-Third Its Length?
- LCSphysicist
- · Replies 3 ·
Mechanics Circular Motion Question
- girlwhoneedsmathhelp
- · Replies 4 ·
Minimum average value of position
- tanaygupta2000
- · Replies 3 ·
Devise two damping mechanisms for these coupled pendulums
- LCSphysicist
- · Replies 3 ·
Find an online stopwatch to record time to .01 or .001 sec
- MaryM
- · Replies 13 ·
Charged Conducting Sheet v. Charged Non-Conducting Sheet
- Taulant Sholla
- · Replies 9 ·
Finding acceleration of blocks A and B in pulley system
- Adesh
- · Replies 35 ·
Adiabatic Process (Poisson’s equations)
- Taulant Sholla
- · Replies 4 ·
Simple pendulum subject to a driven force
- LCSphysicist
- · Replies 1 ·
Dropped object in a rotating frame
- etotheipi
- · Replies 3 ·
How can I improve my Experiment plan?
- RemotePhysics
- · Replies 12 ·
Having trouble starting a plane motion problem
- AmazingDonuts
- · Replies 7 ·
Steel ball oscillating in a tube
- LCSphysicist
- · Replies 3 ·
Electrons impinging on a crystal
- tanaygupta2000
- · Replies 3 ·
Why did my analysis of critically damped motion lead to the wrong solution?
- LCSphysicist
- · Replies 2 ·
How much ice is needed to cool 31055.04J of water from 42°C to 0°C?
- cwill53
- · Replies 5 ·
Doppler effect - two airplanes flying towards each other
- Ondyman
- · Replies 8 ·
Conservation of relativistic momentum
- VVS2000
- · Replies 3 ·
What is zero error of a measuring instrument ?
- SSG-E
- · Replies 1 ·
Minimum force required to rotate a lamina
- PhysicsBoi1908
- · Replies 32 ·
Young's modulus and compression
- LCSphysicist
- · Replies 1 ·
Conservation of angular momentum and rotational kinetic energy
- Saptarshi Sarkar
- · Replies 2 ·
Relationship between radial distance and charge density of a capacitor
- Tony Hau
- · Replies 2 ·
Why Do mω²xa and 2kxa Both Act in Normal Modes Oscillations?
- LCSphysicist
- · Replies 2 ·
Minimum distance between balls connected by rods
- etotheipi
- · Replies 9 ·
Derivation of Lorentz Time Transformation
- Eipi
- · Replies 3 ·
Ball rolling in a magnetic field
- etotheipi
- · Replies 2 ·
Finding the rotation rate where objects fly off Earth's surface
- RemotePhysics
- · Replies 26 ·
Spring launcher on a ramp: velocity of compressed spring releasing a numbat
- aspodkfpo
- · Replies 16 ·
How to calc the period of this mass spring system?
- LCSphysicist
- · Replies 2 ·
Resultant field at the center of two semicircular current arcs
- tanaygupta2000
- · Replies 8 ·
Trouble with Static Equilibrium
- rtareen
- · Replies 5 ·
Confusion on the distribution of charge
- Gourab_chill
- · Replies 7 ·
Orbital speed variation as a planet orbits the Sun
- tempack
- · Replies 5 ·
Choosing Limits of Integration for Velocity Calculation
- fmiren
- · Replies 5 ·
Finding Velocity of Car Slowing Down: v_0-c*(t-t_1)^2/2
- fmiren
- · Replies 3 ·
How Does Resolving Angular Velocity into Components Affect Its Magnitude?
- aspodkfpo
- · Replies 27 ·
Disk held up by a massless string: normal force integration error
- John100861
- · Replies 5 ·
To measure the diameter of a sphere using a screw gauge
- Amitkumarr
- · Replies 4 ·
Why is my solution to finding the spring constant incorrect?
- LCSphysicist
- · Replies 3 ·
Conservation of energy problem: Two masses, a pulley and an incline
- Tassandro
- · Replies 3 ·
Cylinder inside a cylindrical track
- Nexus99
- · Replies 11 ·
Maximum height a block reaches after separating from a curved moving ramp
- ItsukaKitto
- · Replies 8 ·
Rotating rod colliding with ball: find angular velocity, required mass, and impulse
- Nexus99
- · Replies 13 ·
Modelling an interation between two protons
- kaspis245
- · Replies 7 ·
Apparent weight of a body with upward acceleration
- TH02
- · Replies 22 ·
What is the relationship between force, acceleration, and mass in a lift?
- TH02
- · Replies 16 ·