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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Tunneling with an alpha particle
- Differentiate1
- · Replies 6 ·
Removing The Dielectric From A Parallel Plate Capacitor
- BOAS
- · Replies 4 ·
Is Indoor Pressure the Same as Outdoor Pressure?
- vettel1993
- · Replies 2 ·
How to Determine the Range of r for a Non-Sliding Mass on a Rotating Turntable?
- Cliff Bryant
- · Replies 3 ·
Current division in parallel power transmission wires
- Roynish
- · Replies 14 ·
Wedge and block initial momentum
- gracy
- · Replies 92 ·
Where to place Gaussian surface
- henry3369
- · Replies 3 ·
Work done by air resistance on a 250g rock thrown horizontally from 4.6m
- Honey Bee
- · Replies 6 ·
Heating a ring in a magnetic field
- Ananya0107
- · Replies 3 ·
How to tell when to use Cos vs sin in physics
- Smith96
- · Replies 10 ·
How Much Work Is Involved in Climbing Stairs for a 60kg Person?
- Mr Davis 97
- · Replies 12 ·
Speed parameter β and Lorentz factor γ
- rlc
- · Replies 3 ·
How is EMF induced in a pendulum under the influence of Earth's magnetic field?
- nishanth R
- · Replies 8 ·
Why does the wedge reach maximum velocity at height h?
- gracy
- · Replies 38 ·
Force and moment equations for a swinging pendulum
- theone
- · Replies 20 ·
Coefficient of friction of a flat belt and of a vee belt
- chickenmcnugget
- · Replies 3 ·
Find the Magnitude of the Magnetic Field in a moving loop
- Shinwasha
- · Replies 6 ·
Minimum speed for passenger to catch train with constant acceleration
- toesockshoe
- · Replies 32 ·
Escape Velocity, with varying acceleration as a(y)
- Chris T.
- · Replies 5 ·
Finding Magnetic Field from a Box
- Shinwasha
- · Replies 2 ·
Conservation of momentum and concept of center of mass.
- Satvik Pandey
- · Replies 8 ·
Which Equation Best Describes the Block's Height After a Bullet Impact?
- Westin
- · Replies 7 ·
When will the fishing boat and the speedboat meet?
- kitsh
- · Replies 17 ·
What is the Binding Energy of an Oxygen Atom Given its Mass Defect?
- brake4country
- · Replies 3 ·
Differential equations: applying force to projectile
- gnumoe
- · Replies 3 ·
Rotational inertia of a rod that has mass on one end
- xd14
- · Replies 1 ·
How Long Does It Take for a Drone to Fall From 400ft?
- Flying Monkey
- · Replies 2 ·
Earth's Rotational Velocity: Find Linear Velocity
- physics123456
- · Replies 1 ·
Conservation of Angular Momentum in a Rotating System
- physics123456
- · Replies 1 ·
Collapsing sun, new average rotation
- physics123456
- · Replies 1 ·
Why does Newton's law of gravitation involve a cube on the bottom?
- Calpalned
- · Replies 2 ·
Spring problem: compressed and pushed down with a velocity
- ayjakk
- · Replies 3 ·
Is it a good idea to fire a shotgun against a tree?
- Westin
- · Replies 8 ·
Ball thrown from moving boat and projectile final velocities
- FenzyFee
- · Replies 1 ·
How Do Velocity and Acceleration Change Under Unbalanced Forces?
- sparklegemini
- · Replies 11 ·
How Does Charge Distribution Affect Electric Field Direction in a Sphere?
- erisedk
- · Replies 1 ·
How Large Must a Helium Balloon Be to Achieve Neutral Buoyancy?
- TR1
- · Replies 3 ·
How Does Cooling Bricks Affect the Entropy Change of the Universe?
- piston
- · Replies 20 ·
Centripetal Force of swung keys Problem
- MiniOreo1998
- · Replies 5 ·
What is the direction of rolling friction?
- Raymond Zheng
- · Replies 2 ·
How to control velocity in a conical pendulum
- May
- · Replies 1 ·
Velocity of a planet around the sun
- hs764
- · Replies 4 ·
Hooke's Law: Find x (How much will the spring stretch)?
- Alice Saka
- · Replies 8 ·
Tangental Velocity and Bicycle Wheel Radii
- sciencegem
- · Replies 2 ·
Find the equivalent resistance (Req) of the simple circuit.
- sugz
- · Replies 4 ·
How do I determine the resultant vector R from R = A + B ?
- osob
- · Replies 13 ·
Moment of Inertia for Composite Object
- theone
- · Replies 4 ·
Why is energy conserved when friction is applied if friction is nonconservative?
- brake4country
- · Replies 4 ·
Power Problem regarding elavator
- Ethan_Tab
- · Replies 3 ·
Magnetic flux density along axis of a single-loop coil
- carl binney
- · Replies 8 ·
Electrostatic Field and Particle Motion: Homework Solution and Explanation
- BoanviaFx
- · Replies 1 ·
Finding engine force from power output at constant speed
- Ethan_Tab
- · Replies 7 ·
Net flux through a cylinder from a point charge
- henry3369
- · Replies 1 ·
What are the tensions on two cables holding a girder hanging from a crane?
- manrkin
- · Replies 14 ·
How to Obtain a Magnification of -2 from a Convex Lens?
- Sylvia
- · Replies 3 ·
An electron moving through a uniform magnetic field
- Destroxia
- · Replies 7 ·
Confusion regarding signs in SHM problem
- Tanya Sharma
- · Replies 15 ·
Solving Simple Work Problem: 515J
- Mr Davis 97
- · Replies 1 ·
Introductory problem about force (N)
- SamuelVictor
- · Replies 3 ·
Hydrostatics on plane surface (basic fluid mechanic Q)
- uzman1243
- · Replies 1 ·
Astronomy: Sun azimuth from altitude, hour angle, and declination
- Frank Einstein
- · Replies 3 ·
Statistical Physics: Cubic lattice of two molecules
- Matt atkinson
- · Replies 1 ·
Angular motion-centrifuge problem .
- Prashant91
- · Replies 3 ·
Calculating Kinetic Energy of a Rotating Grinding Wheel
- physaru86
- · Replies 13 ·
Why Are There Different Results in Young's Double-Slit Experiment Calculations?
- Chris Okeef
- · Replies 1 ·
Effusion in Uranium Enrichment: Calculating Concentration and Number of Repeats
- Incand
- · Replies 12 ·
A homemade capacitor question, Vf/2
- skepticwulf
- · Replies 1 ·
A 3500-pF air-gap capacitor question
- skepticwulf
- · Replies 2 ·
Mechanical advantage ideal systems
- brake4country
- · Replies 2 ·
What is the normal force on a block at the top of a loop?
- AionTelos
- · Replies 3 ·
When do two stacked blocks move together without sliding?
- Physicsnoob90
- · Replies 2 ·
Circuit analysis complex numbers
- x86
- · Replies 2 ·
Conservation of Energy for Parallel Wires
- Essence
- · Replies 3 ·
Ping-Pong Ball Submerged in Water and then Released
- ColtonCM
- · Replies 12 ·
De Broglie wavelength of nitrogen molecules
- Kavorka
- · Replies 3 ·
Angle of reflection in total internal reflection
- MathewsMD
- · Replies 9 ·
Find the magnitudes of all of the forces acting on the sled
- NkaujHelp
- · Replies 5 ·
Electron revolutions in Bohr model
- Kavorka
- · Replies 6 ·
My temperature after dropping ice in tea isn't adding up
- Eclair_de_XII
- · Replies 14 ·
How Do You Calculate Tension and Acceleration in a Constrained Pulley System?
- AbhinavJ
- · Replies 4 ·
Astronomy: Speed at the edge of the galaxy
- razidan
- · Replies 4 ·
Flux of Circuit made from Metal Bar on Parallel Rails
- LunaFly
- · Replies 4 ·
Using force vector to integrate work in xy-plane
- whatdoido
- · Replies 8 ·
Calculate the magnitude of the induced EMF in the loop
- Shinwasha
- · Replies 1 ·
Maximum incident angle for total internal reflection in optical fiber
- MrMoose
- · Replies 4 ·
Average Dose Rate of 1.11x108 Bq 131I in Thyroid
- xamy
- · Replies 1 ·
Thermodynamics: finding work done
- Frozen
- · Replies 4 ·
How do I find the specific heat of a hot object in water?
- Eclair_de_XII
- · Replies 14 ·
Frequency difference to find a 20m whale
- bananabandana
- · Replies 1 ·
Bolt dropped from accelerating elevator ceiling
- toesockshoe
- · Replies 5 ·
How much the gas has increased the speed of the plug?
- kaspis245
- · Replies 7 ·
Thomson and Rutherford's experiments
- Westin
- · Replies 3 ·
Time it takes for electron to travel through a solenoid.
- Shinwasha
- · Replies 7 ·
Plotting Kinetic Energy of Mass Against Time and Distance
- rikiki
- · Replies 31 ·
Procedure for an Inclined Plane Lab
- Connie Lewis
- · Replies 3 ·
Conservation of momentum question - elastic collisions
- Valerie Prowse
- · Replies 6 ·
How Are Proton Energies Quantized in a Nano-Scale Box?
- Kavorka
- · Replies 1 ·
Scale reading in elevator with acceleration and constant velocity
- Prashant91
- · Replies 6 ·
Mass sliding down frictionless ramp, across rough patch, up second ramp
- Ethan_Tab
- · Replies 4 ·