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 Moment of a Force Using Varignon's Theorem
- sevag00
- · Replies 8 ·
Calculating Free Fall Motion: A Practice Problem with Step-by-Step Solution
- tmc123
- · Replies 4 ·
What Temperature Triples the RMS Speed of an Ideal Gas?
- nickb145
- · Replies 3 ·
Golf ball projectile motion: two solutions for time in air
- paolostinz
- · Replies 14 ·
Linear Speed of Earth at latitude 40° N
- Reefy
- · Replies 3 ·
In arrangement shown in the figure, find the acceleration of M. The pu
- ayush98
- · Replies 2 ·
Finding internal forces to calculate stresses in a beam
- princejan7
- · Replies 1 ·
What Are the Equations for Calculating Centripetal Acceleration?
- SmallPub
- · Replies 2 ·
Fluid Flow and Projectile Motion
- dropgigawatt
- · Replies 3 ·
Projectile Motion with multiple variables
- frensel
- · Replies 17 ·
Conservation of Linear Momentum vs Conservation of Energy
- kipinator101
- · Replies 14 ·
How Is Work Done by Gravitational Force Calculated in Satellite Orbits?
- emmah01
- · Replies 2 ·
Building a RC circuit to pick up radio waves
- freshcoast
- · Replies 5 ·
Interpolating enthalpy and internal energy between table values
- psilocybin
- · Replies 2 ·
Elementary travelling wave problem
- patrickmoloney
- · Replies 1 ·
Destructive interference Problem
- patrickmoloney
- · Replies 1 ·
What is the Angular Frequency of Small Oscillations for This System?
- peripatein
- · Replies 5 ·
What Distance from Speaker A Will a Microphone Detect Minimum Sound Intensity?
- patrickmoloney
- · Replies 3 ·
Adding vectors given just the magnitude
- mrknowknow
- · Replies 3 ·
How high does the basketball player leap?
- Medgirl314
- · Replies 35 ·
When to use sin vs cos for force components at a joint?
- NoobeAtPhysics
- · Replies 13 ·
Catapult trigger mechanism for releasing a nail with string
- Coco12
- · Replies 7 ·
Two rockets rotating attached by rod
- Esoremada
- · Replies 9 ·
Progressive Wave: Motion of Particles on Pulse
- Mahasweta
- · Replies 1 ·
Static Equilibrium: Why Ethelred Gets the Short End of the Pole
- PhysicsKid0123
- · Replies 4 ·
Finding equilibrium distance of an orbiting particle.
- phosgene
- · Replies 2 ·
How much further does a ring roll up a hill
- Esoremada
- · Replies 3 ·
Centroid of composite area (one question)
- BMcC
- · Replies 1 ·
How long does it take for the activity of the radionuclide to decrease by 50%?
- kirstlen
- · Replies 10 ·
How Do You Calculate Charge and Current Change Rate in LC Circuits?
- dwn
- · Replies 1 ·
Maximum incident angle for total internal reflection in a 30-60-90 prism
- Gclip5
- · Replies 9 ·
Moment of inertia/Parallel axis theorem (lots of work shown)
- BMcC
- · Replies 11 ·
Mutual inductance in a circuit.
- anthonych414
- · Replies 2 ·
H and y parameters for CB and CE transistors
- evol_w10lv
- · Replies 1 ·
A ball rolling down a slope, find its velocity.
- Milsomonk
- · Replies 12 ·
Is Angular Velocity Calculated Differently in Circular Motion?
- nil1996
- · Replies 9 ·
Rolling without slipping force diagram
- BrianSauce
- · Replies 8 ·
Energy of block hitting a spring
- Kot
- · Replies 12 ·
Gravitational potential energy between Earth and Moon
- fogvajarash
- · Replies 8 ·
AC Circuit with possibly nodal analysis
- irivce
- · Replies 5 ·
Solving for Final Velocities and Min Length of m2
- colmes
- · Replies 1 ·
When are stairs NOT an inclined plane?
- Student800
- · Replies 2 ·
Angular Speed of Pulley (Spring, Pulley, Ramp)
- Ticklez_Panda
- · Replies 7 ·
A small lump of ice sliding down a large, smooth sphere.
- MrDaahl
- · Replies 21 ·
Calculating the Final Velocity of a Thrown Ball
- Medgirl314
- · Replies 34 ·
Thermal expansion of water and a bubble
- nickb145
- · Replies 2 ·
Maximum speed on a circular track with friction
- RoyG
- · Replies 8 ·
Equal Moments at A: Reasoning and Calculation
- NoobeAtPhysics
- · Replies 4 ·
Finding Friction in Equilibrium Rod on Ball
- crom1
- · Replies 15 ·
What is the Apparent Weight of an Iron Block Submerged in Water?
- Aoiumi
- · Replies 6 ·
How Do Different Aperture Shapes in a Styrofoam Box Affect Wave Harmonics?
- arianna1012
- · Replies 1 ·
Physics Problem Involving Gravitational Force on an object based on R
- taylorkrauss
- · Replies 4 ·
Billiards ball sliding then rolling with friction
- Heisenburger
- · Replies 3 ·
How far does a block travel before hitting a spring?
- oneamp
- · Replies 2 ·
Lab Project - build a physical pendulum with the smallest period
- cvali
- · Replies 1 ·
What Is the Maximum Size of a Cube That Can Balance on a Cylinder?
- Saitama
- · Replies 65 ·
Rotational Motion Conceptual Question
- ndomer
- · Replies 4 ·
Vibrational modes of a discrete particle string
- aaaa202
- · Replies 2 ·
How High Should the String Be Above the Floor to Keep the Sphere Sliding?
- tartio
- · Replies 8 ·
Solve for Crate Mass: Torque and Static Friction Problem | 40 kg Answer
- Aoiumi
- · Replies 3 ·
Determining Q for Isobaric Processes: Cp or Cv?
- songsteel
- · Replies 5 ·
Calculating power as a function of time
- hk4491
- · Replies 5 ·
Gauss' law electrostatics problem involving charge densities
- chipotleaway
- · Replies 4 ·
Gauss's Law and nonconducting spherical shell
- Edasaur
- · Replies 2 ·
How Does Force Affect Pressure Change in a Cylinder with a Piston?
- rajumahtora
- · Replies 1 ·
Can You Solve This Newton's Law of Motion Problem?
- rajumahtora
- · Replies 2 ·
How Does Static Friction Maintain Equilibrium in a System of Balls?
- aerograce
- · Replies 16 ·
Solving a Railway Power Problem: 87.1 kW
- hk4491
- · Replies 5 ·
Calculating the Length of a Driveway Using the Work-Kinetic Energy Theorem
- BadCo55
- · Replies 5 ·
Force between two charged particles
- hk4491
- · Replies 5 ·
Deriving the rms speed from the Maxwell speed distribution
- Tabiri
- · Replies 1 ·
Superposition of two waves with different amplitudes and frequencies
- polarbearkids
- · Replies 8 ·
Calculating Work for a Constant Velocity Elevator
- hey123a
- · Replies 1 ·
Derivation for Moment of Inertia of Rectangle rotated through center
- matthew487
- · Replies 3 ·
The factor by which the acoustic power is changed is 7943.28
- woaini
- · Replies 1 ·
Find delta-v; Hohmann transfer orbit
- oddjobmj
- · Replies 4 ·
Basic non-rotating accelerating reference frame problem
- MuIotaTau
- · Replies 1 ·
Magnetic Field Along a Straight Wire with Current
- rinspd
- · Replies 1 ·
Calculating Impulse from a Bat to a Baseball: Finding Direction and Magnitude
- frownifdown
- · Replies 13 ·
Final velocities after elastic collision between 8 kg and 4 kg objects
- bjah
- · Replies 5 ·
Ski jumper energy and momentum with moving hill
- gasar8
- · Replies 7 ·
Calculating Inertia and Kinetic Energy of Connected Shafts
- username0194
- · Replies 1 ·
Finding the velocity of fluid through orifice
- Saitama
- · Replies 6 ·
The Toppling Stack: Finding Equilibrium and Minimum Values
- mrknowknow
- · Replies 1 ·
Degeneracy of each of energies - Quantum
- Dassinia
- · Replies 4 ·
Elastic collision between 25g and 10g objects
- kimlu
- · Replies 3 ·
Why do some electricity pylons collapse in extreme temperatures ?
- fiveirvines4
- · Replies 3 ·
Minimum coefficient of static friction problem
- mrknowknow
- · Replies 22 ·
Why Can Volume Be Used Instead of Specific Volume in PV Diagrams?
- dan28029
- · Replies 4 ·
Total mass from mass distribution function
- noreally
- · Replies 2 ·
Proving the various forms are equivalent
- embphysics
- · Replies 3 ·
How Does Distance from Earth Affect Spacecraft Weight?
- Coco12
- · Replies 4 ·
Coulomb's law calculation with Q1=2mC, Q2=1mC, R=5cm
- Tony Tesla
- · Replies 8 ·
How is torque calculated for rotational motion involving a winch system?
- ps3stephen
- · Replies 2 ·
Fluid Mechanics problem - cylinder over a orifice
- Saitama
- · Replies 20 ·
Two masses on inclined plane with frictionless pulley
- APPhysic
- · Replies 6 ·
What is the maximum emf induced in a rotating coil with given parameters?
- midwest
- · Replies 1 ·
Mechanical energy of a wooden block sliding down an incline.
- Kot
- · Replies 4 ·
Capacitance of Coaxial Cable Configuration with Multiple Conductors
- DRussian
- · Replies 1 ·
Electric flux leaving a sphere
- ViolentCorpse
- · Replies 6 ·