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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Minimal distance between two planes moving perpendicularly
- NikolasLund
- · Replies 6 ·
Block on 45° ramp connected to pulley with friction
- I_Try_Math
- · Replies 15 ·
Friction problem of a block sandwiched between 2 surfaces
- vcl0124
- · Replies 6 ·
How friction acts on a block moving down a slope moving side to side
- QuantumOscillatorIII
- · Replies 2 ·
How to find the equivalent resistance of this infinite circuit?
- zenterix
- · Replies 10 ·
The div in cartesian coordinates
- kirito
- · Replies 2 ·
Finding the reflection location for a diver in a convex mirror
- hraghav
- · Replies 19 ·
Find the electric field between 2 finite discs
- kirito
- · Replies 16 ·
Find the location and length of the final image
- hraghav
- · Replies 2 ·
Man pulling a boat along the water with a rope (from above on a steep bank)
- brotherbobby
- · Replies 31 ·
Material Selection - Hooke's law [not]
- nik_2507
- · Replies 14 ·
Tension Force Problem (applying Work-Kinetic Energy Theorem)
- Heisenberg7
- · Replies 16 ·
Falling mass, additionally accelerated by a rope
- greypilgrim
- · Replies 18 ·
Calculating torque on a pendulum
- I_Try_Math
- · Replies 2 ·
Electric field lines outside a neutral conducting spherical shell
- tellmesomething
- · Replies 12 ·
How to calculate quality factor for RLC circuit?
- zenterix
- · Replies 6 ·
Mass atop four springs with external input: Reduce vibration amplitude by factor of ten
- zenterix
- · Replies 3 ·
What mass must be placed on the cord to keep the pulley from rotating?
- I_Try_Math
- · Replies 1 ·
Ratio of volumes in a vertical cylinder with a piston
- danut
- · Replies 3 ·
Estimating damped harmonic oscillator parameters from this plot of the oscillations
- zenterix
- · Replies 9 ·
A rod that falls while rotating from the end of a table
- Kim Gi Hyuk
- · Replies 11 ·
Flower pot thrown from 40 m balcony: finding initial velocity and impact speed
- cherryLoop
- · Replies 18 ·
Why does the view factor formula ignore radiation to the surroundings?
- harsh_23
- · Replies 3 ·
The speed of the point of intersection of two uniformly moving lines
- brotherbobby
- · Replies 24 ·
Theoretical velocities at different heights sliding down an inclined plane
- helloworld2941
- · Replies 4 ·
How to determine if electrical components are connected in parallel or in series?
- kirito
- · Replies 10 ·
Electric flux through an inclined cylinder
- Zayan
- · Replies 16 ·
A charge q approaching two stationary charges q1 and q2
- Heisenberg7
- · Replies 7 ·
Effective focal length of two converging lenses 20 cm apart
- malolapjk
- · Replies 5 ·
Charge conservation for 3 parallel charged plates
- tellmesomething
- · Replies 19 ·
Force transmitted to a block in viscous fluid through a spring, cord, and pulley
- zenterix
- · Replies 6 ·
Two Inverted Pendulums connected by a rope
- Deegee
- · Replies 10 ·
Gauss' law problem -- Should the field due to both the inside and outside charges be taken into account?
- tellmesomething
- · Replies 28 ·
Finding change in potential energy with reduced puck speed
- AJII
- · Replies 9 ·
Does linearity mean the superposition of solutions in forced oscillators?
- brettng
- · Replies 6 ·
Induced currents on a pair of separated dipole antennas
- yefj
- · Replies 2 ·
Thermodynamic cyclic process - 2 isobaric and 2 adiabatic
- Thermofox
- · Replies 5 ·
Ball launched from a height of 5 meters --- Projectile motion
- Thermofox
- · Replies 12 ·
Block on top of an inclined plane, with a rough surface, that moves with constant acceleration
- Thermofox
- · Replies 41 ·
Energy analysis of the system (leaking bucket from Morin's "Mechanics"
- Michael Korobov
- · Replies 5 ·
Lifetime of damped oscillators across damping regimes
- brettng
- · Replies 5 ·
Textbook 'The Physics of Waves': Calculating Work Done by Force
- brettng
- · Replies 2 ·
Is there a limit on how much energy a photon might have in a FOR?
- Aurelius120
- · Replies 10 ·
How to parametrize motion of a pendulum in terms of Cartesian coordinates?
- zenterix
- · Replies 1 ·
What is meant by small oscillations for this potential energy function?
- zenterix
- · Replies 2 ·
Initial velocity of bird landing on horizontal wire modeled as spring
- zenterix
- · Replies 7 ·
Circular motion of a Weightless rod
- PitViper
- · Replies 18 ·
Electric field of point along the central vertical axis of a triangle
- Samir_Khalilullah
- · Replies 3 ·
Proving Newton's 3rd law from conservation of momentum
- Quantum55151
- · Replies 2 ·
Finding speed of two billiard balls in elastic collision
- I_Try_Math
- · Replies 9 ·
Ping-pong ball hanging from charged infinite plane
- thejuanestevez
- · Replies 9 ·
Measurement of the Stefan-Boltzmann constant
- MatinSAR
- · Replies 6 ·
Why is the superposition principle valid here?
- tellmesomething
- · Replies 5 ·
Morin 3.7 -- Block sliding sideways on an inclined plane
- masteralien
- · Replies 11 ·
How Do Mass and Weight Differ?
- Quantum55151
- · Replies 29 ·
Equivalence of Euler-Lagrange equations and Cardinal Equations for a rigid planar system
- l4teLearner
- · Replies 4 ·
Rotating simple harmonic oscillator
- kekpillangok
- · Replies 11 ·
Finding final speeds in elastic collision from momentum
- I_Try_Math
- · Replies 1 ·
Force analysis of a spring-bob system
- tellmesomething
- · Replies 2 ·
Block on top of moving slab, with a rough surface - When does v_b=v_s?
- Thermofox
- · Replies 27 ·
Impulse and perfectly inelastic collision between 2 points
- Thermofox
- · Replies 4 ·
Conservation of energy of a bow and arrow
- Sam Jelly
- · Replies 3 ·
Stretched spring attached to the center of a pure rolling disk
- Thermofox
- · Replies 11 ·
What is taken as datum level for the following absolute potentials?
- tellmesomething
- · Replies 2 ·
Applying Force on a Cylinder at an Angle
- Heisenberg7
- · Replies 8 ·
Free Body Diagram of Mass-Spring System
- chaneth8
- · Replies 5 ·
Conservation of Mechanical Energy - Which Equation To Use?
- chaneth8
- · Replies 9 ·
Closest distance of approach between 2 charged particles
- Heisenberg7
- · Replies 5 ·
System of two wheels of different sizes with an axle through their centers
- Aurelius120
- · Replies 67 ·
Change in Entropy When Mixing Water at Different Temperatures
- domephilis
- · Replies 5 ·
Question About Momentum: Ball Rolling up a Curved Ramp
- chaneth8
- · Replies 12 ·
Homer Simpson spinning inside an hourglass
- ajejebrazorf
- · Replies 4 ·
Resultant force on a parachutist
- Quantum55151
- · Replies 11 ·
A moving boat with a flag on its mast
- brotherbobby
- · Replies 15 ·
Calculating work done by a gas
- hraghav
- · Replies 2 ·
Length Contraction Problem for a Rod in a Spaceship
- Skyxplorer
- · Replies 4 ·
Perfectly inelastic collision between Projectile and a hinged disk
- Thermofox
- · Replies 26 ·
Moving charge deflected by a loop of wire
- TimeBender2004
- · Replies 1 ·
Theory of relativity -- Car and Garage Paradox
- Groovy2
- · Replies 13 ·
Maximum allowable value of a force
- Mohmmad Maaitah
- · Replies 5 ·
Conservation of Momentum Problem - Mechanical and Kinetic Energies
- Ascendant0
- · Replies 2 ·
Dynamics of a Block on top of a slab with friction between them
- Thermofox
- · Replies 33 ·
Find the Period of Oscillation for a Mass Falling Through a Tunnel Through the Earth
- NTesla
- · Replies 7 ·
Deriving complex solutions for SHM from time translation invariance
- brettng
- · Replies 6 ·
Is it friction or tension acting on the person hanging on a rope?
- aiqing
- · Replies 4 ·
Entropy change of surroundings in a cyclic ideal gas process
- Thermofox
- · Replies 35 ·
Spherical ball rolling back and forth in a bowl
- zenterix
- · Replies 24 ·
Determine the force with which the magnetic field of a coil acts on an infinitesimal cube of iron
- withoutname
- · Replies 6 ·
Speed of charged balls after collision
- Bling Fizikst
- · Replies 13 ·
Electric Field of a quarter ring
- Zayan
- · Replies 3 ·
Maxwell disc linked to bar unwinds but stays at same height by raising bar
- zenterix
- · Replies 2 ·
Gauss' Law with a Insulating Shell
- PenDraconis
- · Replies 4 ·
Induced EMF in a rotating ring
- gochaka
- · Replies 14 ·
For what values of total energy is the resulting motion periodic?
- dark_matter_is_neat
- · Replies 25 ·
Why are moments not included in free body diagrams?
- per persson
- · Replies 31 ·
Ruler measurements and knowing how many decimal places to include
- flintstones
- · Replies 9 ·
Energy analysis of this system (curved ramp up and a spring)
- Thermofox
- · Replies 29 ·