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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Double Slits experiment central fringe intensity
- lenguyen1794
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Why did we assume it to be 45 degrees?
- madinsane
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Calculating net force from force diagrams using vector addition
- supernova1203
- · Replies 16 ·
What is the moment of inertia of a disc and rectangular plate system?
- dreamz25
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Electric Field inside a nonconducting sheet
- forestmine
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Calculating Young's Modulus of Elasticity for 0.1% Carbon Steel
- MMCS
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Special Relativity (1-dimensional Lorentz Transformation)
- Harrisonized
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Linearising compound pendulum equation
- seboastien
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Constant potential inside spherical shell
- physicsjock
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What is the Length of a Tensioned String?
- BOYLANATOR
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Find the size of Driving couple, if given the power?
- alec433lawrid
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Finding the angle of a vector with zero x component
- LearninDaMath
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Does a balloon's temperature increase when a balloon is popped?
- Elizabeth Lil
- · Replies 4 ·
What is the torque if the rope is attached
- chaotiiic
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Water and gasoline columns in a U-tube: which is higher?
- CherryXBOMB
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How Is Induced Current Calculated in a Moving Bar Near a Wire?
- Lizziecupcake
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Kinetic Theory and Elastic Collisions
- Opus_723
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Lens selection for 5mm diameter periscope with 250mm viewing area
- bradg
- · Replies 1 ·
Number of electrons and free electrons in a copper wire
- try2be12
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Differentiating Vector Products
- Identify
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Momentum of spring between two objects
- moonbase
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Motion questions and a mass one.
- joshptyltd
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Moments and the line of action of the resultant force
- nonyabus
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Calculating Electric Flux Through a Cone
- forestmine
- · Replies 6 ·
Waves Unit- Angle of Incidence
- epik high
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Electrostatics - point charges and work
- HenryHH
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Center of Mass Rowboat Question
- sweetpete28
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Kinematics: acceleration and speed
- mrsshakes
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Center of Mass bounded by Equations
- nat1
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Why does (2x-7)² expand to include the -28x middle term?
- Rob D
- · Replies 9 ·
Elliptical motion about the origin
- Identify
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Induced emf in a loop from time-dependent current in a wire
- kjlchem
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Schrodinger equation, normalizing
- SoggyBottoms
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AC circuit steady state expression
- pyroknife
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Average Force using Newton's Laws of Motion
- AshNotKetchum
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Angle between B-Field and X-axis
- hanagasumi
- · Replies 8 ·
What is optical path length in the dust extinction equation?
- Joeseye
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Object placed in a fluid, both fluid and object are different densities
- mbkau00
- · Replies 15 ·
Circular motion: Car driving along a circular hill
- Acid92
- · Replies 2 ·
Differential Equation - Springs
- τheory
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Planck constant V in E=qV question
- Paul37
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Detemining the mass of water vapour in air (Ideal gas law)
- Zewz
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Orientation of Receiver Antennas given orientation of transmitter
- monke
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Special Relativity and Decaying Particles
- Rapier
- · Replies 3 ·
Physics teacher traveling at 0.99974c to reverse age difference with student
- Rapier
- · Replies 11 ·
Coefficient of friction of a Skateboard on a ramp
- Dielere
- · Replies 11 ·
Electron Motion in a Long Solenoid
- jehan60188
- · Replies 2 ·
Finding E field magnitude from +/- charges 5cm above axis
- sasuke07
- · Replies 14 ·
Center of Mass, Man, Woman, and Frictionless Ice
- PeachBanana
- · Replies 3 ·
Magnetic field in asymmetric hollow cylinder
- bobred
- · Replies 1 ·
How Fast Must a Plane Fly to Overcome Wind from London to Rome?
- katiefornald
- · Replies 1 ·
Rocket Fuel Problem: Calculating Minimum Fuel Fraction for Rocket Broom Flight
- Bugeye
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Why does charge stay constant when a dielectric is inserted in a capacitor?
- maiad
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Change in potential energy/work formula for electric charges.
- theBEAST
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Electromagnetic Induction Lab. Magnet through a coil
- Serendipitydo
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Impact of Adding Resistor on DC Circuit Current
- maiad
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Center of Mass of an Object A After Breaking
- lowqiumei
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Water tank conservation of energy approach
- sg001
- · Replies 53 ·
Lifetime of CO2 in Mars atmosphere
- frozenguy
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What is the ratio of oxygen in the atmosphere at different heights?
- SoggyBottoms
- · Replies 8 ·
Magnetic field along a current-carrying wire (conceptual question)?
- lillybeans
- · Replies 4 ·
What is the Energy Ratio of Two Photons with Different Wavelengths?
- busa428
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Does a stationary charge experience force from a moving magnetic field?
- Sefrez
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Speed of sports car before collision using friction and momentum
- PeachBanana
- · Replies 9 ·
Determine the unknown property of a perfect gas
- thermo15378
- · Replies 1 ·
Differentiation tricks/shortcuts
- Leb
- · Replies 1 ·
A Mechanics tries to remove an engine from a car by attaching a chain
- teddyayalew
- · Replies 1 ·
How Do You Calculate Angle and Velocity in Particle Motion Analysis?
- Daretodaredar
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How Do You Calculate Tire Contact Area Using Pascal's Law?
- joe98
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What is the electric potential derivative when x=2 and y=1?
- IslandHead
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What is the charge of a point at the center of a ring
- nateja
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Simple Harmonic Motion with Spring
- getty102
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Conservation of Momentum in an Elastic Collision
- mrhingle
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Linear drag in a liquid and terminal velocity
- maxrof
- · Replies 1 ·
Calculate Speed of Hawk's Shadow on Ground
- madinsane
- · Replies 5 ·
Momentums, Ladder against a wall force
- Mukilab
- · Replies 1 ·
Specific Heat Capacity and Energy
- Mukilab
- · Replies 1 ·
Minimum tension in a sagging tightrope with a person standing on it
- mathnoobie
- · Replies 6 ·
How Do I Calculate Air Resistance Force with Vertical Acceleration?
- paperdoll
- · Replies 1 ·
A block is pulled with constant tension up an incline, find the distance?
- clesling
- · Replies 1 ·
Vertical Circular Motion involving centripetal force
- Ammar SH
- · Replies 1 ·
Why Does My Power Calculation Yield Half the Expected Result?
- MMCS
- · Replies 4 ·
Is there a word for the Group with metals, metalloids and non-metals
- GingerNinja
- · Replies 7 ·
How Do You Calculate Display Readings from Pressure in a Cream-Filled Silo?
- joe98
- · Replies 1 ·
Dielectric Influence on Series and Parallel Capacitors
- cellphone
- · Replies 11 ·
Gravity on Moon: How Much Weight Can a Person Lift?
- MoniMini
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How Does the Electric Field of a Quadrupole Decrease with Distance?
- xaer04
- · Replies 4 ·
How Does a Hollow Conducting Sphere Affect Internal and External Charges?
- IWantToLearn
- · Replies 4 ·
Finding temperature of 270g argon at 160kPa and 1.3m³
- thermo15378
- · Replies 3 ·
Current from two parallel batteries with internal resistance
- Alouette
- · Replies 13 ·
Calculus based physics - Energy
- XodoX
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Speed of EM waves in a baseball park setting
- monke
- · Replies 4 ·
Elastic Collision with a Softball
- PeachBanana
- · Replies 2 ·
Nodal analysis with parallel resistors
- eurekameh
- · Replies 1 ·
Resistive ladder of infinite height
- hopkinmn
- · Replies 10 ·
How Does Power Balance in a Driven RLC Circuit?
- thelonious
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Velocity required to increase friction?
- aJaguarinRed
- · Replies 5 ·
Acceleration and Friction of a Rolling Cylinder
- hm8
- · Replies 2 ·
How Fast Did My Friend Travel to Alpha Centauri and Back?
- ADCooper
- · Replies 1 ·
Special Relativity. How to use the Lorentz Transformation?
- AlonsoMcLaren
- · Replies 1 ·