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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Work Function and Wavelength Relationship in Photoelectric Effect
- kingwinner
- · Replies 3 ·
Find the equation of a thermodynamics process in terms of temperature
- rishiraj20006
- · Replies 1 ·
Calculate Distance for 5ft-lbs Impact w/ 1.18lb Sphere
- mrb112103
- · Replies 3 ·
What is a dimension?
- Chris_Gottschal
- · Replies 1 ·
Understanding Net Force and Normal Force in a Frictional System
- muna580
- · Replies 4 ·
Lenz's Law and Current's Direction
- Soaring Crane
- · Replies 1 ·
Where is the Zero Electric Field Point for Two Fixed Charged Particles?
- NW8800
- · Replies 2 ·
What is the Work Done by an Ideal Gas Expanding at Constant Temperature?
- vijiraghs
- · Replies 3 ·
Why Does Brushing Your Hair Give It Volume?
- pharaoh
- · Replies 8 ·
What then is in unit-vector notation
- norcal
- · Replies 2 ·
Calculating Rail Gun Distance for Escape Velocity
- lylos
- · Replies 3 ·
General physics contest problems
- epl_manutd
- · Replies 7 ·
What Are the Final Velocities After an Elastic Collision Between Two Particles?
- ph123
- · Replies 10 ·
What then is in unit-vector notation if Bx = By?
- norcal
- · Replies 2 ·
Solving for Distance Traveled on a Slope with Friction
- BassMaster
- · Replies 7 ·
Solve Physics Problem: Racing Car Mass, Acceleration, & Forces
- Prim3
- · Replies 6 ·
Calculating spring energy in a pumpkin catapult design
- BishopUser
- · Replies 1 ·
What is the real time of free falling in a gravitational field?
- DaNiEl!
- · Replies 5 ·
Solving a Tough Physics Problem: Force Exerted by a Falling Chain on a Table
- epl_manutd
- · Replies 5 ·
Electrostatic force and # of elementary particles
- Plasma
- · Replies 4 ·
Proton, electron and coordinates
- 21385
- · Replies 3 ·
Why does heat transfer occur at a faster rate at lower temperatures?
- MOTO
- · Replies 3 ·
How Do You Calculate Work in a Reversible Ideal Gas Cycle?
- velvetymoogle
- · Replies 2 ·
String in vertical circular motion
- BassMaster
- · Replies 2 ·
Finding orbital velocity for the Moon without object mass
- jeffreydim
- · Replies 4 ·
Ball rolling down a ramp hitting another ball at a different height
- scidude
- · Replies 2 ·
Just understanding wording - optics
- Brewer
- · Replies 1 ·
Determine Inside Diameter of Horizontal Pipe Constriction
- zetabug
- · Replies 3 ·
For every action there is an equal and opposite reaction
- Iceman123
- · Replies 17 ·
Solve the Pendulum Beam Problem with Simple Equations | Homework Help
- PhyzicsOfHockey
- · Replies 3 ·
What is the initial temperature of the heated aluminum bolt?
- Mr.Helms
- · Replies 4 ·
Finding Tension in a Hanging Rope with a Particle
- shastafarian
- · Replies 6 ·
Problem with find angle btw vectors (magnetism problem)
- crevin
- · Replies 2 ·
Work Required to Push/Pull a Crate
- stumper
- · Replies 8 ·
How Does Electric Field Influence Potential Difference and Particle Suspension?
- pharaoh
- · Replies 1 ·
How do you build a home-made speaker using magnets, plastic, coils, etc.?
- AznBoi
- · Replies 15 ·
How Do Students Convert Mechanical Energy into Thermal Energy?
- velvetymoogle
- · Replies 1 ·
Rotational Speed: Calculating Final Velocity on Embankment
- cyberdx16
- · Replies 2 ·
Why Does Water Flow at Lower Pressure Than Atmospheric Pressure?
- Idea04
- · Replies 3 ·
Finding initial velocity from maximum height equation
- music2
- · Replies 1 ·
What is the speed and angle of a swinging pendulum?
- Ready2GoXtr
- · Replies 9 ·
Terminal velocity of a lacrosse ball?
- bolini
- · Replies 10 ·
How Do You Convert Charge to Energy in Capacitors?
- Marte82
- · Replies 5 ·
Calculating laterel acceleration from change in direction (bearing)
- andyismilesaway
- · Replies 6 ·
Simplifying impedance equation for RLC circuit current
- lylos
- · Replies 7 ·
Ball on string rotating at 1 Hz, frequency when string is reeled from 5m to 3m
- tut_einstein
- · Replies 1 ·
Capacitor Charge Equality in Parallel and Series Configuration
- Kanse
- · Replies 2 ·
Solving for Terminal Voltage and Current in a Battery Circuit
- kbyws37
- · Replies 4 ·
How Do Thevenin's and Norton's Theorems Simplify Circuit Analysis?
- rgarforth
- · Replies 1 ·
Sign convention in the RC discharge loop equation
- Ja4Coltrane
- · Replies 3 ·
What is the relation between the volume of liquid water and temperature?
- Werg22
- · Replies 3 ·
Calculating Work and Speed in a Horizontal Force System with a 10.0 kg Mass
- jtaz612
- · Replies 5 ·
Net Impulse Question: Calculate Momentum, Impulse, and Change in Momentum
- hhq5000
- · Replies 1 ·
Electric field and capacitance for non-parallel plates
- power freak
- · Replies 5 ·
Tension difference in a steel cable dragging a block
- madskier8806
- · Replies 1 ·
Conservation of Energy Questions
- triality
- · Replies 1 ·
Help writing hypothesis for force, mass and acceleration experiment
- raman911
- · Replies 9 ·
Buoyant force on a floating 0.5 kg wood block
- onrytxn
- · Replies 1 ·
Finding Time from Accel and Distance
- BlueBob88
- · Replies 1 ·
Mathematical Analysis of Boiling Two Eggs vs. One Egg
- _anant
- · Replies 11 ·
Work and transformation of energy
- pharm89
- · Replies 5 ·
How Do You Calculate Tension in a Two-Rock System in Circular Motion?
- quickclick330
- · Replies 1 ·
Calculating Density of a Liquid with Archimedes' Principle
- bpw91284
- · Replies 5 ·
Solving Drywall Weight Problems
- fruitl00p
- · Replies 2 ·
Finding current and power in circuit with three batteries and resistors
- Zonda
- · Replies 3 ·
Monatomic gas absorbs 400nm light and emits 400nm and 600nm
- velvetymoogle
- · Replies 4 ·
Rail way car acceleration problem
- raman911
- · Replies 9 ·
Centripetal/Projectile Motion: Proof of Formulas for v^2=mgy
- oridniv
- · Replies 3 ·
How Does Mass and Friction Affect Acceleration in a Pulley System?
- swilson5
- · Replies 2 ·
Where Should a 55kg Mass Be Placed to Balance a Suspended 25kg Beam?
- unique_pavadrin
- · Replies 8 ·
Solve EM Waves Problem: Time Difference of Important News Transmission
- Decan
- · Replies 2 ·
Inelastic collision: where did my kinetic energy calculation go wrong?
- dj_killer_lamb
- · Replies 4 ·
Young'a double slit experiment
- kokok
- · Replies 8 ·
Calculating Gravitational Force Between a Doctor and a Baby
- Rasine
- · Replies 4 ·
Which Force Application Minimizes Effort When Moving a Box?
- 21385
- · Replies 5 ·
Calculate Time to Move 2 Isolated Masses: Gravitational Field
- Rasine
- · Replies 5 ·
When Materials are Pulled/Fixed
- FallenAngel
- · Replies 1 ·
At what distance is the object from the mirror?
- dmolson
- · Replies 2 ·
Problem question on power calculation
- wewelsburg
- · Replies 3 ·
About a bee flying inside a moving train
- fujiwara_sai
- · Replies 26 ·
How does a mousetrap mechanism work?
- BassMaster
- · Replies 8 ·
Momentum of a projectile and ship
- ataglance05
- · Replies 21 ·
Dan's Momentum Change: 4m/s to Ground Zero
- trailblaza247
- · Replies 1 ·
Electric Potential conducting shell
- suspenc3
- · Replies 3 ·
Air puck revolving on string through hole with suspended mass
- chamonix
- · Replies 8 ·
How Is Thermal Energy Calculated in an Inductor?
- cmalle09
- · Replies 1 ·
Rotational Dynamics Homework: Velocity Vector & Wire Strength
- ataglance05
- · Replies 1 ·
Relationship between a V and R?
- velocity
- · Replies 3 ·
Finding Centripetal Acceleration on Earth's Surface?
- Caryn7o2
- · Replies 1 ·
Calculus with the electric field
- pakman2012
- · Replies 2 ·
What Is the Value of g in the Pressure Calculation Formula?
- Bk8907
- · Replies 3 ·
Problem, Newton's 3rd Law Astronaut/Satellite
- DantheMan10
- · Replies 10 ·
How Does Increasing the Diameter of a Manometer Affect Liquid Levels?
- greenfloss
- · Replies 4 ·
Calculating Work for a Pulled Carton Across Floor
- DiscreteCharm
- · Replies 4 ·
Calculating Bat's Velocity Using Doppler Effect
- lzh
- · Replies 27 ·
How High Can a Model Rocket Go with a Specific Impulse of 100 Seconds?
- jtaz612
- · Replies 1 ·
Current in parallel wire repelled with 10 N force
- Bk8907
- · Replies 12 ·
How to Calculate the Horizontal Distance of Light in Water Using Snell's Law?
- elitespart
- · Replies 10 ·
Electric potential from three point charges
- Bk8907
- · Replies 1 ·
Physics problem involving work done by friction
- a seeker
- · Replies 4 ·