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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Phase relationship between current and voltage in an L section filter
- sfgoat
- · Replies 5 ·
Ball Drop and Projectile Motion: When Will They Meet?
- Dr.azwar
- · Replies 4 ·
What Charge Does the Third Sphere Acquire?
- utkarshakash
- · Replies 18 ·
How do Normal Force and Centripetal Acceleration Affect a Ferris Wheel Rider?
- hagobarcos
- · Replies 6 ·
Time for Faraday disk brake to lose half its kinetic energy
- 6c 6f 76 65
- · Replies 8 ·
Electron diffraction - effect of electron wavelength
- Molly1235
- · Replies 1 ·
Finding lens focal length to focus laser on 5 micron structures
- Matt atkinson
- · Replies 4 ·
How many rotations does a baseball make traveling 60.5 ft at 113 rpm?
- physicos
- · Replies 22 ·
Minimum Velocity of an object thrown directly up to never fall down?
- Nathanael
- · Replies 5 ·
Relative difference between moment of inertia for the earth
- zeralda21
- · Replies 3 ·
Potential Difference and Power in Resistor Circuit
- Gwozdzilla
- · Replies 1 ·
The total work in a Carnot cycle - checking some work
- Emspak
- · Replies 1 ·
Calculating Voltages Across Resistors Using Ohm's Law
- Rugile
- · Replies 4 ·
Does light intensity change with two polarizing sheets?
- jdroidxw
- · Replies 3 ·
Minimum thickness of MgF2 coating for zero reflection at 550 nm
- jdroidxw
- · Replies 1 ·
When does a two-block system start moving with static friction?
- rzn972
- · Replies 3 ·
Minimum frequency for a centrifuge with 20cm diameter and 10g acceleration
- Pack12
- · Replies 6 ·
Reactor fuel and waste: fission/fusion problem
- tri5
- · Replies 2 ·
Wave pulse reflection at free vs fixed end
- varunika
- · Replies 12 ·
Simple Way to Show Electron's Wave Properties?
- TheFalseHuman
- · Replies 2 ·
How Do You Calculate the Moment of Inertia for a Quarter Disc?
- Sumanth
- · Replies 5 ·
How is heat supplied calculated for an adiabatic cylinder with a moving piston?
- utkarshakash
- · Replies 17 ·
Find the increase in the length of the rod
- utkarshakash
- · Replies 7 ·
Length change for a rod of two sections
- Myr73
- · Replies 14 ·
How Do You Calculate the Distance of Closest Approach in a Particle Collision?
- fayled
- · Replies 5 ·
Resulting intensity of interference
- Maxo
- · Replies 26 ·
Conservation of energy and momentum Problem
- rzn972
- · Replies 1 ·
Physics impulse momentum problem
- rzn972
- · Replies 3 ·
Moment of inertia around displaced and rotated axis
- kontejnjer
- · Replies 2 ·
Speed of Stick's CM Just Before Impacting Ice
- toothpaste666
- · Replies 22 ·
Find potential inside spherical shell
- utkarshakash
- · Replies 5 ·
Find equation for thermodynamic process
- utkarshakash
- · Replies 8 ·
Resultant amplitude of two interfering waves
- Maxo
- · Replies 2 ·
Archimedes's principle of float
- justaus3r
- · Replies 17 ·
Velocity of a particle with some condition
- Govind_Balaji
- · Replies 22 ·
Difficult Introductory Electricity Circuit Problem - Capacitors
- Emc2fma
- · Replies 8 ·
Understanding Work: Calculating Work in Different Scenarios
- physicos
- · Replies 5 ·
How Does Changing String Length Affect Work and Energy in Rotational Motion?
- bobie
- · Replies 11 ·
Particles moving freely on a vertical/horizontal loop
- CAF123
- · Replies 21 ·
Why do insulators need 7-8 valence electrons instead of more?
- theelectrician
- · Replies 1 ·
Calculate total energy from potential at equilibrium point
- EliteCodexer
- · Replies 5 ·
Inclined throw - motorcycle jumps from the ramp
- Karol
- · Replies 2 ·
Why Does Gauss's Law Use Cylinder Circumference Instead of Area?
- CollegeStudent
- · Replies 2 ·
Acceleration relation in a step pulley system
- RaikkoBoy7
- · Replies 2 ·
How Does Inductance Affect a DC Circuit?
- debreets
- · Replies 4 ·
How Do You Derive the Energy Equation for a Rubber Band?
- decerto
- · Replies 5 ·
Find molar mass and number of degrees of freedom from heat capacities.
- Junabes
- · Replies 3 ·
What is the concept of center of mass and how is it related to potential energy?
- antigen123
- · Replies 2 ·
Magnetic Field Strength versus Coil Density
- Infamous911
- · Replies 1 ·
Determine the magnitude of the force on each charge
- meme177
- · Replies 22 ·
Work done of charger of a battery
- FaroukYasser
- · Replies 2 ·
Miller indices for plane with non-orthogonal lattice vectors
- Craptola
- · Replies 3 ·
Calculating the Swing Height of a Thin Rod After a Collision with Putty
- toothpaste666
- · Replies 14 ·
How Fast Must a Pion Travel to Cover 9 Meters Before Decaying?
- Herjo345
- · Replies 3 ·
Why does a positive lens focus two images at different lengths?
- MechEngrStdnt
- · Replies 4 ·
How Do You Calculate the Damping Constant in a Sloped Car Scenario?
- Excelled
- · Replies 3 ·
Determine the Acceleration of the plate for which there is no Force
- Northbysouth
- · Replies 6 ·
Upward Moving Projectiles - determining change in time
- Kingfisher1
- · Replies 2 ·
Max Distance Up Ramp for Rotating Sphere
- physicos
- · Replies 5 ·
Finding the length of a steel bar pendulum with period 1.2 s
- LunaTech
- · Replies 2 ·
A question of electricity regarding emf and voltage
- FaroukYasser
- · Replies 4 ·
How to Find the Shortest Time for Displacement Change in a Wave Function?
- scrubber
- · Replies 6 ·
Minimum kinetic energy and force for javelin, discus, and shot put throws
- BrainMan
- · Replies 10 ·
ANS: Perpendicular bisector of the line joining the two points.
- scrubber
- · Replies 1 ·
A question on work, power and energy
- ritik.dutta3
- · Replies 2 ·
Electric potential and field from three charges on the x-axis
- scrubber
- · Replies 2 ·
Define Force in a system of particles about point P
- xzibition8612
- · Replies 1 ·
Reaching the Moon in 0.9 Seconds: A Physics Challenge
- iPhysics
- · Replies 3 ·
Parallel RLC circuit impedance at resonance and ±2% frequency offset
- edd83
- · Replies 5 ·
What Happens When a Hot Steel Ball is Dropped into Water or Ice?
- navm1
- · Replies 8 ·
Can Magnetic Forces Propel a Model Boat on Water?
- nate205
- · Replies 1 ·
How Many Turns Does a Proton Make in a Solenoid?
- nordik
- · Replies 5 ·
Calculate how high balloon rises before stopping
- ichivictus
- · Replies 8 ·
What Height is Needed for a Roller Coaster to Complete a Loop?
- FabledIntg
- · Replies 24 ·
Solving Heat Engine Questions: 156 Moles of Monatomic Ideal Gas
- neibegafig
- · Replies 3 ·
Is the constant A = i in this hydrogen atom wave function correct?
- gfxroad
- · Replies 11 ·
The Gibbs-Duhem equation - checking some work
- Emspak
- · Replies 5 ·
Planetary Motion with satellite
- teme92
- · Replies 6 ·
Energy and basic math (proportionality)
- Natko
- · Replies 6 ·
Angle to minimize work pulling an object with kinetic friction
- patrickmoloney
- · Replies 9 ·
How Do Conservation Laws Apply to Colliding Space Shuttles?
- djsam1025
- · Replies 1 ·
RC circuit with two resistors and 12V capacitor
- jaredvert
- · Replies 8 ·
What is the velocity of a hot air balloon after sand leaks out?
- albega
- · Replies 7 ·
Diffraction angle with monochromatic light through a grating
- Juls808
- · Replies 1 ·
Why Does a Metal Bar Move in a Magnetic Field?
- Bengo
- · Replies 8 ·
How Does Conservation of Energy Determine the Final Velocity in a Pulley System?
- amondellio
- · Replies 20 ·
How Do You Calculate Tension in a Cable and Force on a Hinge?
- confused111
- · Replies 2 ·
Mass being pulled on flat ground
- teme92
- · Replies 12 ·
Conservation of Energy-Two Blocks Sliding Down an Incline
- _N3WTON_
- · Replies 3 ·
Spring with mass on horizontal surface
- teme92
- · Replies 11 ·
Trying to find the amount of stretch of a spring for a launch
- Ace.
- · Replies 2 ·
Good luck, and let me know if you run into any more problems!
- mpittma1
- · Replies 8 ·
Which forces affect the ball in A, B, C and D?
- Jirya
- · Replies 13 ·
What Is the Length of the Box Based on Photon Emission Wavelengths?
- wompkins
- · Replies 2 ·
Simple electric field strength problem
- liamporter1702
- · Replies 1 ·
Conversion of Electrical Energy to Heat
- ALLIRIX
- · Replies 1 ·
Find temperature change required
- utkarshakash
- · Replies 7 ·
What is the specific heat of the liquid?
- utkarshakash
- · Replies 5 ·
I am new here, this is more of a conceptual confirmation than mathemab
- ALLIRIX
- · Replies 3 ·
What is the Frequency of the Third Harmonic in a Heated, Stretched Yarn?
- utkarshakash
- · Replies 4 ·