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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Simple unit convention question
- doive
- · Replies 4 ·
Potential Difference between Concentric Circles
- codfishman
- · Replies 1 ·
Electric Force on a charge effected by a non-uniform linear charge
- bjornert
- · Replies 10 ·
Question on emission of electrons
- shar_p
- · Replies 4 ·
Calculating the Torque of a Cubical Block on an Inclined Plane
- sachin123
- · Replies 2 ·
Can't Find Error in Application of Gauss's Law
- SaintsTheMeta
- · Replies 4 ·
Entropy Change in a Fridge and Kitchen System
- victoriafello
- · Replies 16 ·
How Is Energy Distributed in the N-14 and Alpha Particle Reaction?
- Masafi
- · Replies 3 ·
Work done in Rotational Kinematics
- nahanksh
- · Replies 1 ·
Rotational Kinematics of a spool of mass
- nahanksh
- · Replies 2 ·
Where is the net electric field zero between two opposite charges?
- laxwarrior
- · Replies 1 ·
At what position is the net electric field equal to zero?
- laxwarrior
- · Replies 1 ·
Block leaving a vibrating piston in simple harmonic motion
- LeakyFrog
- · Replies 7 ·
How Do You Calculate Resistance in a Circuit Diagram?
- ggb123
- · Replies 6 ·
Vrms = 0.5 Vmax for Half Wave Rectifier: Proof
- songoku
- · Replies 2 ·
Finding Pluto's orbital period and bird speed from projectile motion
- Power of One
- · Replies 3 ·
Changing Units From Joules to Mega electron Volts
- majormuss
- · Replies 1 ·
Pressure Variation in Planetary Atmosphere
- BreakingBad
- · Replies 2 ·
How Much Energy Is Released in Tritium Nucleus Formation?
- majormuss
- · Replies 5 ·
How do mass and moment of inertia affect cylinder acceleration on an incline?
- zhenyazh
- · Replies 1 ·
Projectile motion of a volleyball
- majormuss
- · Replies 1 ·
Gravitational potential energy increase
- majormuss
- · Replies 5 ·
Force between Two Charges with a Metal Sheet in Between: Decrease or Increase?
- ananthu
- · Replies 3 ·
Fluid Dynamics: Finding Speed in Venturi Tube
- victorlee2
- · Replies 1 ·
Finding the zero E-field point between two charges on the y-axis
- apphysicsgirl
- · Replies 7 ·
Ratio of Kinetic to Potential Energy of Simple Harmonic Oscillator
- darkblue
- · Replies 9 ·
Where does the momentum go when a ball bounces off a wall
- windwitch
- · Replies 2 ·
Determine the effective spring constant of the molecule
- Knfoster
- · Replies 7 ·
Conical Pendulum Concept Questions
- Taschen
- · Replies 4 ·
Circular motion I HAVE NO IDEA WHAT I AM DOING
- Toto06
- · Replies 3 ·
Electron moving in a magnetic field
- PennyGirl
- · Replies 5 ·
Kinetic friction coefficient for polystyrene on glass
- Kenster1025
- · Replies 1 ·
Bird flying between two approaching trains
- natezyz
- · Replies 1 ·
Electrostatic force betwen two ions
- Knfoster
- · Replies 2 ·
Which planet has the same size but different masses, and no atmospheres?
- Toto06
- · Replies 3 ·
Kinetic Friction of hockey puck
- nambod
- · Replies 1 ·
Motion at Constant Acceleration Question 3
- Adrianna
- · Replies 5 ·
RMS of square, sine and triangle waves
- Juan Pablo
- · Replies 6 ·
Motion at Constant Acceleration Question 2
- Adrianna
- · Replies 6 ·
Rearranging the pendulum period equation to solve for g
- pkpiotr517
- · Replies 3 ·
Sports Car Acceleration Question
- Adrianna
- · Replies 7 ·
Charge-to-Mass Ratio of Electron in Circular Path
- Masafi
- · Replies 3 ·
Motion at Constant Acceleration Question
- Adrianna
- · Replies 4 ·
Potential difference of a group of atoms
- HuaYongLi
- · Replies 1 ·
Kirchhoff's laws circuit with negative current result
- physicsfun_12
- · Replies 4 ·
Spring constant 54 N/m, mass extends it to 35 cm
- audreylynn
- · Replies 5 ·
Velocity and Total Distance Table for Stone Dropped from Tall Building
- celect
- · Replies 4 ·
Explain Buoyancy: A Boat, Rock, and Swimming Pool
- opqpop
- · Replies 1 ·
Calculating a Prince's Message: Flight Time, Moat Width and Impact Velocity
- LampMan
- · Replies 1 ·
How Far Can a Spider Safely Cling to a Spinning Ceiling Fan Blade?
- Masafi
- · Replies 1 ·
Finding the pressure in a pipe?
- miamirulz29
- · Replies 1 ·
Calculating Height After Bump: A Physics Problem
- physx_matter
- · Replies 5 ·
Calculate Total Upward Force Skateboard Mass 65kg, Half Pipe 3m
- Masafi
- · Replies 1 ·
Resolving Vectors for Electric Charges
- physicsfun_12
- · Replies 6 ·
How to calculate average power?
- ben2010
- · Replies 1 ·
Electricity field, finding charge
- cogman
- · Replies 6 ·
Why is a Tungsten filament used in incandescent bulbs? (Factual Question)
- SankalpSethi
- · Replies 4 ·
Falling egg question (with energy equations)
- jackamo321
- · Replies 5 ·
What is the largest angle for sin and tan to agree within 2 significant figures?
- homeworkboy
- · Replies 13 ·
Ferry velocity relative to water given passenger velocities
- planke
- · Replies 2 ·
Object dropped on rotating turntable, find mass
- nahanksh
- · Replies 2 ·
Calculating mass of air from Speed and Density?
- ntk_k
- · Replies 8 ·
Can You Calculate Torque with Angular Velocity and Moment of Inertia Data?
- physisis
- · Replies 1 ·
Applying Flemings Left Hand Rule for DC and AC Motors - Difficulty Solved?
- micro
- · Replies 4 ·
Potential difference vs. voltage drop across a resistor
- xxavenue
- · Replies 1 ·
What is the Vertical Separation of Steel Balls in a Steady Fall?
- Larrytsai
- · Replies 4 ·
Kirchhoff's 2nd Law for Capacitor Circuits
- Apteronotus
- · Replies 4 ·
Calculating work using hookes law
- dw10
- · Replies 1 ·
Mixing different temperatures of water ?
- Dmitri10
- · Replies 1 ·
Iron bars dimming lightbulb in electromagnet circuit
- Greywolfe1982
- · Replies 2 ·
Simple Harmonic Motion troubles.
- EtherMD
- · Replies 3 ·
How Do You Calculate Mass and Acceleration in a Spring Mass System?
- Ahmad786
- · Replies 1 ·
Solve for the length of a cylinder
- lshine09
- · Replies 2 ·
: Rollercoaster Experiment Work Equations Needed
- Kenster1025
- · Replies 1 ·
Gravitational Force: Formula Derivation for 2 Continuous Bodies
- demonelite123
- · Replies 2 ·
How Much Gas Must a Rocket Expel to Alter Its Course by 23 Degrees?
- GreenPrint
- · Replies 1 ·
Can an irreversible adiabatic process follow the same adiabat as a reversible one?
- libelec
- · Replies 18 ·
Water drop in electric field of the Earth
- disque
- · Replies 16 ·
RC-circuit for charged capacitor
- Apteronotus
- · Replies 4 ·
Constant acceleration calculations.
- cary1234
- · Replies 1 ·
Experiments to measure refractive index of liquids
- JohnayG
- · Replies 4 ·
Determine the electric field on the y axis
- LANS
- · Replies 1 ·
Torque and rotational inertia equation for rotating rod
- zhenyazh
- · Replies 3 ·
Parallel Plates - Electron Liberation
- physicsfun_12
- · Replies 3 ·
Tension at the Top of the String
- Ahmad786
- · Replies 8 ·
Diameter of telescope needed to resolve 3 m lunar lander
- twinkle24
- · Replies 4 ·
How Do You Calculate the Speed and Spring Constant of a Pivot-Mounted Rod?
- zhenyazh
- · Replies 3 ·
Can a 3 kg projectile land 8.5 m away under a 2.9 m ceiling?
- bwagner
- · Replies 10 ·
Calculating Resistance in a Series Circuit
- the-alchemist
- · Replies 5 ·
How much energy does a bicycle diname produces?
- Veselin
- · Replies 4 ·
Sound Transmission: Glass vs. Wood Doors
- ananthu
- · Replies 1 ·
Kinematics - Statics - Free Body Diagram
- nahanksh
- · Replies 3 ·
How Is Overlap Length x Determined for No Rotational Motion After Collision?
- conana
- · Replies 2 ·
Is moment of inertia defined for fluids?
- aim1732
- · Replies 2 ·
The potential at points around a cone
- Identity
- · Replies 2 ·
1.0kg physics book on slope, and Newton's Third Law?
- Jthunder
- · Replies 1 ·
Converting between units with powers: m² to cm³, km/h to m/s
- iZH
- · Replies 8 ·
Show that the units for all 3 terms in bernouliis equation are the same
- victoriafello
- · Replies 10 ·
Sign confusion of Mirrors/Lenses.
- AznBoi
- · Replies 10 ·
Two cars travel at the same speed of 105 km/h
- physics_kills
- · Replies 1 ·