Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Derive Relative Intensities from LS-Coupling Sum Rules
- John Greger
- · Replies 1 ·
Newton’s Law of Motions: tension forces in a pulley
- Beth N
- · Replies 4 ·
Solving for Hyperfine Constants in the 6s-8p Transition of 115In
- John Greger
- · Replies 5 ·
Finding potentials in a circuit with an earthed point between capacitors
- Krushnaraj Pandya
- · Replies 28 ·
Find the equivalent capacitance of the circuit
- Krushnaraj Pandya
- · Replies 12 ·
E-field generated by constant current in a circular loop
- olaney
- · Replies 12 ·
Behaviour of an accelerating beam of electron.
- Nemika
- · Replies 10 ·
Equivalent Capacitance of Five Plates with Uniform Area and Spacing
- Krushnaraj Pandya
- · Replies 4 ·
Metal Stick that falls by gravity inside a magnetic field
- alejandromeira
- · Replies 16 ·
Capacitor+work energy theorem problem
- Krushnaraj Pandya
- · Replies 18 ·
After how many time constants is capacitor energy 1/4?
- David Day
- · Replies 1 ·
Calculating Mean Free Path Ratios in a Divided Ideal Gas System
- Tachyonprince
- · Replies 3 ·
Capacitance of a Parallel Plate Capacitor
- Krushnaraj Pandya
- · Replies 28 ·
Capacitance of spherical capacitor
- Krushnaraj Pandya
- · Replies 12 ·
I am building a power-bank for a project, out of capacitors
- themotionsickphoton
- · Replies 14 ·
How Do You Identify Spectral Lines and Calculate Fine Structure Constants?
- John Greger
- · Replies 6 ·
Why does Gauss's law surface integral not zero at neutral point between charges?
- Avinash Verma
- · Replies 7 ·
Total Angular Momentum of an odd-parity shell-model state
- says
- · Replies 1 ·
Is the Energy Density Formula Applicable to All Capacitors?
- Krushnaraj Pandya
- · Replies 2 ·
What are the steps to solve a polytropic process problem?
- Joon
- · Replies 6 ·
Finding power output from steam turbine with isentropic process
- Joon
- · Replies 20 ·
Potential difference in uniform field at 45°
- Krushnaraj Pandya
- · Replies 8 ·
What is the Principle of a Capacitor?
- Krushnaraj Pandya
- · Replies 5 ·
Velocity of a hollow cylinder at the bottom of an incline
- Barnt
- · Replies 9 ·
Calculate velocity of the fastest neutron inside a 96Mo nucl
- says
- · Replies 5 ·
Does the electric field within a conductor depend on its location?
- Krushnaraj Pandya
- · Replies 2 ·
Simple coefficient of performance question
- Joon
- · Replies 6 ·
River-boat problem (Relative velocity)
- baldbrain
- · Replies 9 ·
Electric field and potential at vertex of cube
- Krushnaraj Pandya
- · Replies 9 ·
Force and pressure when draining an 85ml syringe in 25 seconds
- flutrpooch
- · Replies 11 ·
Find Angular Velocity for Moving Particle Parallel to x-Axis
- Vatsal Goyal
- · Replies 11 ·
Calculating Minimum Speed for a Successful River Jump
- DannyDon
- · Replies 5 ·
Resolving 0.60 m objects on the moon with Rayleigh's criterion
- Erickly
- · Replies 18 ·
Minimum film thickness for destructive interference in thin film coating
- Erickly
- · Replies 12 ·
What Is the Correct Method to Estimate Ionization Energy in He-like Carbon?
- John Greger
- · Replies 9 ·
Velocity at stack tip with 2.5 m diameter section
- Suradanai
- · Replies 5 ·
Simple reversed heat engine problem
- Joon
- · Replies 2 ·
Disk on coil spring with dropped ring: angular momentum and energy
- MARX
- · Replies 6 ·
Solving Entropy of Mixing Problem in Physics
- Loro
- · Replies 17 ·
Infinite chain of alternating charges (+/-)
- starstruck_
- · Replies 29 ·
Why don't voltages add up numerically in an LCR AC circuit?
- Pochen Liu
- · Replies 5 ·
What Was the Initial Speed of the Proton in a Collision?
- kristjan
- · Replies 2 ·
How Do You Calculate Oscillation Frequency for a Quadratic-Cubic Potential?
- Silviu
- · Replies 2 ·
Electric field between conducting and non-conducting sheets
- Mirza Danish Baig
- · Replies 9 ·
Circular orbit change after gaining mass ejected from sun
- caitphys
- · Replies 1 ·
Finding magnetic field from electric field in EM wave
- astrolady022
- · Replies 21 ·
Tangential Acceleration/Tension
- srekai
- · Replies 6 ·
Catapult Shooting Distance: 76.79m
- robax25
- · Replies 4 ·
Centripetal Acceleration of Satellite
- Physics53
- · Replies 7 ·
How Does a Spring Impact the Angular Frequency of a Pendulum?
- Ujjwal Basumatary
- · Replies 15 ·
Proton vs electron, find the magnetic field for the electron
- Alice7979
- · Replies 9 ·
Charge Flow in Earthed Conducting Shell with Non-Symmetric Configuration
- Brilli
- · Replies 15 ·
Determine fine-structure constant
- Philip Land
- · Replies 9 ·
Force needed to rotate 4 kg body from 0° to 90° in 5 seconds
- aschopade29
- · Replies 14 ·
Time required store half the maximum energy in an inductor
- prodo123
- · Replies 1 ·
Magnetic field in 3 dimensions
- Alice7979
- · Replies 2 ·
What is the range and time period of this particle?
- says
- · Replies 1 ·
Divergence of B, circular current loop
- pobro44
- · Replies 2 ·
Which powers works on bead on a string?
- Hadar
- · Replies 2 ·
What is the difference between the centre of pressure and the centroid?
- Kiran Bose
- · Replies 3 ·
Average force on a 15 g bullet passing through a 2 cm plastic sheet
- Pao44445
- · Replies 28 ·
Help with uncertainty quiz questions
- TheFallen018
- · Replies 7 ·
When Friction the block m2 start to move?
- navneet9431
- · Replies 11 ·
How do I do this trigonometry vector calculation?
- Jan Berkhout
- · Replies 4 ·
Why Does the Bucket on Keel 3 Tip to the Left?
- torukojin
- · Replies 10 ·
Number of waves from an oscillating source in one period
- {???}
- · Replies 70 ·
Wave function - displacement - transverse wave
- Jozefina Gramatikova
- · Replies 3 ·
Rod w/ Pivot and Attached Mass Pendulum
- srekai
- · Replies 4 ·
Determining the Speed of a Rotating Disk with a Constant Force
- Kenneth Dirk
- · Replies 10 ·
How Many Food Calories with Efficiency %
- Edemardil
- · Replies 1 ·
A few questions regarding Neutral Objects
- CGandC
- · Replies 17 ·
Rotational Mechanics question with spring
- Ujjwal Basumatary
- · Replies 4 ·
Centre of mass of a hollow pyramid
- subzero0137
- · Replies 13 ·
Muon lifetime and distance traveled at 0.99c with time dilation
- chef99
- · Replies 7 ·
Solving System of Equations (including Trig)
- crastinus
- · Replies 2 ·
Find the velocity of the rain drops with respect to the man?
- Indranil
- · Replies 4 ·
Calculating water pressure at different depths
- torukojin
- · Replies 2 ·
Energy dissipated by resistor problem
- CynicalBiochemist
- · Replies 3 ·
Force on a part of a spherical shell on the other
- Brilli
- · Replies 2 ·
Understanding Rigid Body Rotation: Solving Problem 4A and B from a Physics Exam
- Kenneth Dirk
- · Replies 4 ·
What resistance maximizes battery terminal voltage?
- Alice7979
- · Replies 2 ·
When does phi equal zero in x=Acos(wt+phi)?
- Jozefina Gramatikova
- · Replies 17 ·
Understanding an Elementary Torque Concept
- GaussianCurve
- · Replies 8 ·
AC circuit, voltage and frequency problem
- Alice7979
- · Replies 10 ·
Pulley system with spring: find final speed of 1 kg box on rough ramp
- Eduardo Leon
- · Replies 9 ·
Electric Field and Potential Difference in a Coaxial Cable
- 12x4
- · Replies 5 ·
Which Force is Represented by the Gradient of the Ball-Wall Collision Graph?
- PhysicsIsKillingMe
- · Replies 3 ·
Should point at which E field = 0 coincide with V = 0?
- David Day
- · Replies 6 ·
Conservation principles and particle-particle reactions
- Jimmy Ridley
- · Replies 5 ·
Why 't = 0' here in this equation in the case below?
- Indranil
- · Replies 15 ·
Double slits and convex lens interference
- fedecolo
- · Replies 8 ·
Oscillating rod attached to spring
- mbigras
- · Replies 17 ·
Force exertion by liquid in a jar
- Edemardil
- · Replies 1 ·
Force from moonshine expansion in sealed jar using bulk modulus
- Edemardil
- · Replies 4 ·
Dependence of extention on length
- Brilli
- · Replies 2 ·
Mass needed to balance the magnetic force on upper rod
- voxphate
- · Replies 2 ·
Magnetization of the core of a long solenoid
- prodo123
- · Replies 5 ·
You're welcome, Rémi! Good luck with your exercise.
- Remi David
- · Replies 2 ·
Muon production and decay from relativistic annihilation
- caitphys
- · Replies 4 ·
How much energy do I consist of?
- cliffhanley203
- · Replies 1 ·