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 orbital radius of a muon captured in the n=1 ground state of Carbon?
- eedftt
- · Replies 13 ·
How Do You Calibrate a Meter Stick?
- ajhorst99
- · Replies 1 ·
Why Do Spring Constants Differ Between Hooke's Law and Oscillation Method?
- VitaminK
- · Replies 7 ·
Using Effective Mass to find the accelerations of 3 masses connected by pulleys
- Crystal037
- · Replies 25 ·
Bohr Model - Absorbing a Photon with Enough Energy to Ionize the Atom
- flintstones
- · Replies 4 ·
Understanding How to Scale an Atom's Nucleus
- Rakshitgarg1709
- · Replies 1 ·
Is the time independent Schrodinger equation commutative?
- etotheipi
- · Replies 9 ·
Longitude contraction / time dilatation
- pepediaz
- · Replies 17 ·
I can't comprehend impulse = momentum
- Pushies
- · Replies 3 ·
Solve my Mechanical Motion Puzzle: 18in(7lbs)
- around86
- · Replies 5 ·
Refrigerant - mass flow, power, COP
- sci0x
- · Replies 11 ·
I.E. Irodov Problems in General Physics, 1.304
- Luke Tan
- · Replies 8 ·
O and P whose 4-velocity and 4-acceleration have a dot product of 0
- PhDeezNutz
- · Replies 24 ·
Determining moment (or torque) around a certain point on a wrench
- Rildude
- · Replies 1 ·
Create a method to measure a varying voltage from a power line
- estudent1371
- · Replies 2 ·
Calculate the Temperature and Pressure of a melting point
- romanski007
- · Replies 3 ·
Fuel needed for satellite orbital maneuver at 200 km altitude
- Nirmal Padwal
- · Replies 12 ·
Where does Newton's third law fail?
- LCSphysicist
- · Replies 9 ·
How do I know when to factor out a variable?
- billllib
- · Replies 31 ·
Finding the angular speed of a hinged rod without using torque or acceleration.
- Crystal037
- · Replies 1 ·
How to Derive the Equation for Radial Dependence of Light in a Galaxy Image?
- Gantar
- · Replies 3 ·
Where does the symbol r come from in mathematics?
- requied
- · Replies 4 ·
I'm not getting the curl of vector potential equal to magnetic field
- Adesh
- · Replies 3 ·
Superluminal moving points 4-velocity
- PhDeezNutz
- · Replies 2 ·
Fixing an Incorrect Equation Answer
- highschoolphysics
- · Replies 5 ·
Understanding Bending Moment Calculations in Mechanical Systems
- Setareh7796
- · Replies 6 ·
Electric field at the center of a sphere
- Physicslearner500039
- · Replies 6 ·
Interference: Factors that reduce the widths of primary maxima
- roya98864
- · Replies 4 ·
Calculating Kinetic Energy Using Uniform Velocity and Energy Equations
- UnknownQuestioner
- · Replies 10 ·
Electric Current and Resistance
- zoyash
- · Replies 3 ·
Efficiency and Energy to move a box on a conveyor belt
- UnknownQuestioner
- · Replies 11 ·
Proof that a projectile comes to rest in a finite distance
- dk123
- · Replies 4 ·
The inelastic collision between a disk and a rotating platform
- Leo Liu
- · Replies 3 ·
Help with this quantum circuit textbook problem about controlled gates
- kellys
- · Replies 2 ·
How will the equation for gravitational force be changed?
- Edel Crine
- · Replies 7 ·
I don't know where to start with my physics homework
- ParticleGinger6
- · Replies 4 ·
The maximum length that a spring can stretch in reality
- Edel Crine
- · Replies 2 ·
Find the tension in the string of this two mass system
- PSN03
- · Replies 27 ·
Case when the potential energy of the 1st excited state is zero
- PSN03
- · Replies 41 ·
Relativistic collision time between two rockets
- Apashanka
- · Replies 3 ·
Flow of a Non Viscous Fluid Through this Nozzle
- rekordido11
- · Replies 9 ·
Work Done by an Induced Electric Field
- KC374
- · Replies 2 ·
Shear Force on Bolts mounting gearbox to engine
- Ashferico
- · Replies 1 ·
Why doesn't dividing voltage by distance give the electric field between plates?
- Zero
- · Replies 12 ·
Difficult Elastic Collision problem between two springs
- physicsguy1011
- · Replies 9 ·
Speed and rest energy of a particle collision
- arella
- · Replies 10 ·
How Do Moiré Patterns Affect Graphene's Electronic Properties?
- Jufa
- · Replies 6 ·
Electric field due to a straight rod
- Physicslearner500039
- · Replies 1 ·
Using convergent and divergent lenses to form images
- albertus50
- · Replies 1 ·
Rotational Mechanics -- A solid sphere is rolled on a rough surface
- Ayesha02
- · Replies 6 ·
Understanding Angular Momentum and Energy Equations
- LCSphysicist
- · Replies 6 ·
How to calculate the efficiency of a switch mode power supply?
- Maniac_XOX
- · Replies 4 ·
Hard Momentum Conservation Impact Problem
- Ayesha02
- · Replies 22 ·
Velocity and acceleration of stick AB attached to rolling disk
- Serhatakguc0
- · Replies 6 ·
Roller coaster, ball attached to coaster by a string calculate various tension
- yoyolala
- · Replies 1 ·
Finding Equivalent Resistance Using Symmetry and Kirchhoff's Laws
- sktg
- · Replies 3 ·
Lorentz transformation for an approaching observer
- sukmeov
- · Replies 5 ·
Inductance and Charge Redistribution
- Ayesha02
- · Replies 67 ·
Electric Field of a Point Charge and Thin Ring: A Comparative Analysis
- Physicslearner500039
- · Replies 3 ·
Converting kinetic energy to eV in photoelectric effect
- Gh0stS3C
- · Replies 16 ·
Rotational Mechanics Question - A Rotating Bar
- Mayhem
- · Replies 9 ·
Projectile motion of a moving target
- shibe
- · Replies 1 ·
Forces and centripetal acceleration in a rotating spring system
- LCSphysicist
- · Replies 11 ·
Magnetism lab involving a nail and an Allen wrench
- VitaminK
- · Replies 4 ·
Angular Velocity of a Car going around a curve
- RobGoodall
- · Replies 9 ·
Work done by pushing a proton into the sphere with non-uniform charge
- Mr_Pu
- · Replies 13 ·
Finding the electric field between two charged parallel plates
- ParticleGinger6
- · Replies 3 ·
Horizontal projectile motion lab
- VitaminK
- · Replies 12 ·
Why doesn't a free-spinning disk rotate when pendulum forces act on it?
- LCSphysicist
- · Replies 1 ·
Number of maxima in Young's double slit experiment
- Ayesha02
- · Replies 26 ·
What does the thermal expansion lab data reveal?
- tavskitavski
- · Replies 3 ·
Period of two-disk pendulum with separation distance L
- LCSphysicist
- · Replies 7 ·
Clarifying the Leaning Sticks Problem Solution
- PhysHobbiest
- · Replies 9 ·
The derivative of Heat Capacity with respect of pressure
- Astrocyte
- · Replies 2 ·
Function for the movement of a charged particle in a B field
- Eirik
- · Replies 3 ·
External pressure when internal pressure is constant
- Termodinamico
- · Replies 2 ·
Three masses connected by pulleys
- new90
- · Replies 40 ·
Moment of inertia of a cone -- Why do we divide the equation dI = dm*r^2 by two?
- LCSphysicist
- · Replies 6 ·
Deriving constant pressure specific heat from entropy and enthalpy
- PhDeezNutz
- · Replies 11 ·
Problem about a ball rolling on a rotating hoop
- Tony Hau
- · Replies 18 ·
Potential of a spherical shell
- Physicslearner500039
- · Replies 7 ·
Understanding Capacitor Equations and Time Constants
- Gourab_chill
- · Replies 11 ·
Torque on a circular current loop
- Leo Liu
- · Replies 8 ·
Induced EMF in a moving Loop Conductor
- Kharrid
- · Replies 3 ·
How Does Force Applied to One Vertex Affect Opposite Vertex in a Square Frame?
- Saitama
- · Replies 53 ·
Why is gravitational potential energy zero at infinity?
- LCSphysicist
- · Replies 7 ·
Calculating Orbital Velocity and Radius Using Energy Conservation
- cwill53
- · Replies 3 ·
Why are my force equations giving me incorrect answers?
- cwill53
- · Replies 11 ·
Can Two Protons Have the Same Speed After an Elastic Collision?
- Mustard
- · Replies 1 ·
Measuring corneal radius with illumination
- ewang
- · Replies 1 ·
Potential energy of a system of two punctual charges along the X axis
- AndersF
- · Replies 7 ·
Gas in a syringe being compressed - thermodynamic processes
- domingoleung
- · Replies 1 ·
Finding the pulling force from two dogs on a sled using friction
- albertus50
- · Replies 29 ·
Finding rotated point coordinates using a rotation matrix
- Jamie2020
- · Replies 8 ·
What is the gravitational strength "G"?
- LCSphysicist
- · Replies 1 ·
Can I simplify this RLC circuit problem using a different method?
- Cloruro de potasio
- · Replies 4 ·
Find the drift speed of of the electrons
- r-swald
- · Replies 7 ·
Stabilizer Leg Linear Actuator Force to Jack up a Truck's rear tyres
- Ashferico
- · Replies 4 ·
Understanding this Equation of motion with a constant
- Jamie2020
- · Replies 18 ·
Angular momentum of a rotating disc
- LCSphysicist
- · Replies 3 ·