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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What is the Correct Way to Calculate Magnetic Force on an Electron or Proton?
- SHOORY
- · Replies 7 ·
How many air molecules are there inside the tire?
- SmugBug
- · Replies 3 ·
Are measured values and readings the same thing?
- Indranil
- · Replies 7 ·
Momentum conservation: block-wedge problem
- Krushnaraj Pandya
- · Replies 4 ·
Find the resistance and EMF in a circuit
- thee qs
- · Replies 15 ·
Kleppner-Mechanics Solar sail 2
- MARX
- · Replies 7 ·
Expression of radius and helical motion in a magnetic field
- thee qs
- · Replies 17 ·
Magnetic moment and magnetic field and dot product
- thee qs
- · Replies 13 ·
Find induced current, magnetic force, work in inclined plane
- Helly123
- · Replies 3 ·
Ampere definition and infinite wires separated by 1 meter
- thee qs
- · Replies 8 ·
Does Heat Radiation Decrease the Number of Photons Over Time?
- Jahnavi
- · Replies 18 ·
De Broglie wavelength of electron and proton
- Jahnavi
- · Replies 14 ·
Basic forces question with a pulley problem
- Eitan Levy
- · Replies 5 ·
Calculating Applied Force for a Moving Block on a Table
- Alyona
- · Replies 9 ·
How Do You Calculate the Speed of a Rod in a Magnetic Field?
- SHOORY
- · Replies 25 ·
Deformation of a metal sheet with a tip force applied
- jassie1990
- · Replies 5 ·
When will the barrel become half empty?
- mathchimp
- · Replies 1 ·
Electric Flux through the Face of a Cube
- CDL
- · Replies 17 ·
What Force Keeps a Bar at a Constant Angle on a Smooth Plane?
- Krushnaraj Pandya
- · Replies 4 ·
Moment of inertia of a metal plate about three points
- Krushnaraj Pandya
- · Replies 6 ·
Final velocity of two blocks between a spring
- PedroPicapiedra
- · Replies 2 ·
Angular momentum of a spinning baseball
- Keith Moffet
- · Replies 3 ·
Linear regression errors vs measurement uncertainties
- Felipe Lincoln
- · Replies 7 ·
Find the angle for which both disks are no longer in contact
- Nicolas Gallardo
- · Replies 9 ·
Where Is the Error in Calculating the Distance Traveled?
- prakhargupta3301
- · Replies 2 ·
Distance, Time, and Temperature question
- Nathan J
- · Replies 3 ·
Find the torque for a vehicle wheel
- MikeN232
- · Replies 2 ·
Not sure how to plug in numbers for Work Energy Theorem
- CiCi
- · Replies 13 ·
Electricity and Magnetism Electric Field Problem
- astrolady022
- · Replies 7 ·
Radius of a particle's path in a B field and magentic momentum force
- thee qs
- · Replies 10 ·
Magnetic energy stored in a cylindrical conductor
- Granger
- · Replies 4 ·
Force on central charge in regular n-gon with one vertex charge removed
- CDL
- · Replies 1 ·
Capacitors in series with voltage source after switch change
- Kosta1234
- · Replies 11 ·
About electricity and the EMF -- Multiple choice question
- Sabeshan Ratneswaran
- · Replies 13 ·
Entropy and the partition function for nitrogen
- jbowers9
- · Replies 6 ·
Electrical Potential of a uniformly charged spherical shell
- icesalmon
- · Replies 5 ·
What is the apparent weight of a woman riding over a hump in a car?
- vbrasic
- · Replies 6 ·
Moment of inertia with system of rods
- symbolic
- · Replies 2 ·
Determine the ground speed and the course of the plane
- Alexanddros81
- · Replies 1 ·
Why does doubling the grating lines give different diffraction angles?
- maxelcat
- · Replies 6 ·
Understanding Molar Volume at STP
- subhradeep mahata
- · Replies 2 ·
How Does Velocity Relate to Displacement in Pulley Systems?
- prakhargupta3301
- · Replies 17 ·
Finding the Velocity of a Mass in Circular Motion
- barryj
- · Replies 6 ·
Change of of the pressure of water inside a container
- Baris Kalfa
- · Replies 7 ·
Gravity of the Earth if its mass were doubled
- Albert einstine
- · Replies 2 ·
Center of Mass Balancing Question
- lola96
- · Replies 7 ·
What force do the arrows represent?
- lioric
- · Replies 4 ·
Electric Potential Difference Problem
- Noah2305
- · Replies 10 ·
Linear momentum of two photons with same wavelength
- Jahnavi
- · Replies 8 ·
Which of these metals provide magnetic shielding?
- lioric
- · Replies 2 ·
Finding the Equation for a Plane Containing a Point and Line
- happykamper21
- · Replies 9 ·
Stopping distance of a car rolling down a hill
- Barnt
- · Replies 4 ·
Solar intensity at Earth: why is 1400 W/m² constant if it's power?
- Jahnavi
- · Replies 3 ·
Force on Electron in Light Bulb Filament (240V, 6.0cm)
- BreadTomato
- · Replies 2 ·
Calculating the period of a low Earth satelite using Kepler
- barryj
- · Replies 6 ·
What is the correct velocity of an electron in a bound orbit around a proton?
- LukasMont
- · Replies 2 ·
Calculating Spring Constant and Energy Conservation: How Fast Will the Bag Drop?
- MarieMarie94
- · Replies 3 ·
Why does the spring paradox give the wrong equilibrium position?
- LukasMont
- · Replies 4 ·
Calculating Work to Charge Parallel Conducting Plates
- razidan
- · Replies 2 ·
Angular velocity of bicycle wheel
- Nelson2436
- · Replies 5 ·
Air resistance differential equation
- David Koufos
- · Replies 7 ·
Flux with an infinitely long surface cutting through a sphere
- mk9898
- · Replies 6 ·
Calculating Electric Potenial Difference
- chef99
- · Replies 3 ·
Checking integral solution steps against answer options
- prakhargupta3301
- · Replies 7 ·
Finding the momentum of a photon
- chef99
- · Replies 11 ·
Having a problem in steps while solving integrals
- prakhargupta3301
- · Replies 6 ·
A copper wire and an iron wire - Potential difference
- mk9898
- · Replies 6 ·
Direction of Magnetic Force on a Wire Moving Down a Slope with Current I?
- Eitan Levy
- · Replies 16 ·
Calculate Internal Angular Momentum and Energy
- Nicolas Gallardo
- · Replies 7 ·
Energy in a rotating square loop
- Granger
- · Replies 5 ·
What law will be used in this experiment?
- EelAnes
- · Replies 3 ·
Why this special case occurs in an exchange of heat
- Andres Padilla
- · Replies 5 ·
Why is dt omitted when integrating velocity to find displacement?
- prakhargupta3301
- · Replies 5 ·
Linear Acceleration of a Rigid Object with Attached Disks and Tension on Cord
- Nicolas Gallardo
- · Replies 4 ·
Car test, and vibrations problem
- Mohamed BOUCHAKOUR
- · Replies 2 ·
Which circuit has the largest resistance across a PN diode
- Eman 55
- · Replies 2 ·
Weight of person on Earth, and on a different planet's surface?
- joyxx
- · Replies 11 ·
How do I calculate work and heat in a PV diagram for an ideal monoatomic gas?
- Muthumanimaran
- · Replies 11 ·
Flux between two current-carrying wires
- Gene Naden
- · Replies 8 ·
Object whirled on conical pendulum with 10 kg mass and 4 m radius
- psstudent
- · Replies 4 ·
Calculating Charge and Time in a Discharging RC Circuit
- Moolisa
- · Replies 3 ·
Bond Strength and Force constant
- Muthumanimaran
- · Replies 2 ·
Entropy change in an RC circuit
- yamata1
- · Replies 5 ·
Magnetic field in the case of a thin magnetized cylinder
- Granger
- · Replies 11 ·
Special relativity and Lorentz factor problem
- RealKiller69
- · Replies 1 ·
Volume ratio in an adiabatic gas expansion
- Granger
- · Replies 9 ·
Find the unknown capacity of two capacitors
- Kirill Vlaksov
- · Replies 5 ·
Proton-oxygen-18 reaction: gamma ray energy and binding energy
- Jimmy87
- · Replies 21 ·
32.76 Time for current to decay with capacitors and resistors
- thedarkone80
- · Replies 2 ·
Force Required to Maintain Conveyor Belt Speed: 7N
- Antu Ghosh
- · Replies 4 ·
What is the pressure surrounding a liquid at its boiling point?
- dromeascr
- · Replies 2 ·
Matrix representation of raising operators for a 3-state system
- Mutatis
- · Replies 6 ·
Statics - Support Reaction in Truss
- Philippe
- · Replies 12 ·
Wave packet width given a wave function
- Safder Aree
- · Replies 2 ·
How to determine if this is β- or β+ decay?
- PerpetuallyConfused
- · Replies 9 ·
How to proceed from a Poisson bracket calculation
- Apashanka das
- · Replies 1 ·
Rope on Table Kleppner-Mechanics
- MARX
- · Replies 11 ·
Circular motion in the vertical plane
- WhiteWolf98
- · Replies 1 ·
Friction problem (pushing a box)
- Alyona
- · Replies 3 ·
Coriolis deviation of a bullet fired northward at 45° latitude
- Foruer
- · Replies 6 ·