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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Car accelerating at 4.0 m/s² passes truck at constant 25 m/s
- Alyce777
- · Replies 2 ·
Wind Velocity: Findings & Insight Needed
- Iniuria12
- · Replies 7 ·
What is the significance of the gravitational constant G in physics?
- questioner
- · Replies 8 ·
2 carts, a string, what is the work done?
- mujadeo
- · Replies 24 ·
Can Math Truly Transition from Finite to Infinite?
- Opoint
- · Replies 3 ·
Will I Die if I Shoot a Bullet to the Sky?
- h0pez
- · Replies 2 ·
The Curious Phenomenon of the Moving Bullet
- jubble
- · Replies 1 ·
What is the final speed of the box at 10m?
- avsj
- · Replies 3 ·
Some really confusing directions (and the world is flat).
- niyati
- · Replies 4 ·
What Causes Error in Calculating Acceleration on an Inclined Plane?
- mujadeo
- · Replies 2 ·
Understanding Vibration in Objects - Dan's Query
- danago
- · Replies 3 ·
Size of image in a mirror problem
- MIA6
- · Replies 9 ·
Conserved momentum (car accident)
- mujadeo
- · Replies 10 ·
Magnetic Flux (Induction - Magnet through a coil)
- ManMonkeyFish
- · Replies 1 ·
Finding the current in uneven parallel circuits
- mtanney
- · Replies 2 ·
Finding tension in cables supporting a beam with a hanging mass
- avsj
- · Replies 2 ·
Is F=ma a Circular Argument in Newton's Second Law?
- uiulic
- · Replies 4 ·
What is the Magnetic Field Strength of a Magnetron at a Resonant Frequency?
- Hellphish
- · Replies 2 ·
Can infinite recurrence be mathematically proven?
- Opoint
- · Replies 2 ·
How to calculate acceleration per second
- questioner
- · Replies 11 ·
How Does Charge Induction Work in a Hollow Conducting Sphere?
- ratn_kumbh
- · Replies 1 ·
Potential Energy of a system of Point Charges
- Tybstar
- · Replies 3 ·
What does 'simple harmonic motion' mean?
- MIA6
- · Replies 3 ·
Should atmospheric pressure be included in a free body diagram of a book on a table?
- lin_howt
- · Replies 5 ·
Confusion between waves and particles, which one is vibrating?
- MIA6
- · Replies 5 ·
What is the work done on the gas for path IAF using a P-V graph?
- alexithymia916
- · Replies 4 ·
How Do You Calculate the Change in Internal Energy for Hydrogen Gas?
- alexithymia916
- · Replies 2 ·
How to Calculate the Moment of Inertia of an Assembly?
- vscid
- · Replies 2 ·
Michelson-morley interforometer.
- MathematicalPhysicist
- · Replies 8 ·
Equation for magnetic moment, E-field and B-field
- pangsiukwong
- · Replies 1 ·
Vacuum required to generate specific amount of force
- Chris@ETI
- · Replies 2 ·
How Does a Boy Scout Use Eyeglasses to Start a Fire?
- floridianfisher
- · Replies 5 ·
What Are the Linear Speeds of Binary Stars?
- Gunman
- · Replies 6 ·
Electric field/equipotential field questions
- t_n_p
- · Replies 4 ·
What is the maximum magnification achievable with a simple lens?
- floridianfisher
- · Replies 1 ·
What is the formula for determining the resultant force on a charge?
- t_n_p
- · Replies 3 ·
How can I calculate the period of a dipole's S.H.O in a uniform electric field?
- radiogaga35
- · Replies 4 ·
What is the best way to minimize damage in a car crash?
- Darquis
- · Replies 4 ·
Gauss's law for sheet and spherical charge
- t_n_p
- · Replies 4 ·
Height of image formed by converging and diverging lens
- peavey07
- · Replies 2 ·
Finding the time for a pendulum mass to move 2.7 cm between scale marks
- heartofaragorn
- · Replies 5 ·
Simple Harmonic Motion with 2 beads
- heartofaragorn
- · Replies 5 ·
Why Don't Colored Compounds Decolorize Immediately Under White Light?
- loom91
- · Replies 14 ·
How to calculate electrons in one coulomb?
- shehri
- · Replies 1 ·
Electric Generator - work on lightbulb, but not on motor, why?
- spongebob
- · Replies 2 ·
Current-Carrying Wire/Magnet Question
- bagheera
- · Replies 2 ·
Why Does the Displacement Formula Include a 1/2 Factor in Physics?
- shinni
- · Replies 1 ·
What does sigma^(1) C_2 = sigma^(12) mean in group theory?
- M. Kohlhaas
- · Replies 3 ·
Gravitational field and graavitational potential
- Gunman
- · Replies 2 ·
Derivation for Kinetic Theory of Gases
- platina
- · Replies 6 ·
Does Balloon Lift Force Increase or Decrease with Altitude?
- the keck
- · Replies 1 ·
Constant performance vs friction and drag
- bXD01Q99
- · Replies 3 ·
How Do You Solve for Masses and Velocities in Relativistic Particle Splitting?
- patapat
- · Replies 13 ·
Pressure inside a chamber with a piston
- alexithymia916
- · Replies 6 ·
How is Energy Exchanged in a Parallel Circuit?
- Trooko
- · Replies 2 ·
Magnitude of the force (Tug-o-war)
- grade11
- · Replies 14 ·
How do weight, surface area, and speed affect the force of friction?
- grade11
- · Replies 4 ·
What affects the force of friction in an investigation?
- grade11
- · Replies 16 ·
Car starts with some kinetic energy
- MIA6
- · Replies 5 ·
Calculating Kinetic Energy of Recoiling Hydrogen Atom
- patapat
- · Replies 1 ·
Equilibrium Concentration of NO in N2/O2 Mixture at 2000 K
- jlc287
- · Replies 1 ·
What was the minimum power required?
- MIA6
- · Replies 8 ·
600N weight on 400N steel tube balanced horizontally
- Armoment
- · Replies 3 ·
Fluid pressure in different test tubes
- blader324
- · Replies 7 ·
Calculating AC Current for a 0.197 H Inductor with 166 V Peak Voltage
- kiwikahuna
- · Replies 2 ·
Reactance, resistance and impedance
- Dean820
- · Replies 2 ·
Work Problems: Calculate Force for 150kg Object on 20* Incline
- TexasCow
- · Replies 3 ·
Finding work function and Planck's constant from photoelectric data
- patapat
- · Replies 2 ·
Snell's Law x2: Double-checking trig?
- exi
- · Replies 3 ·
Magnetism, component values, and three dimensions
- exi
- · Replies 10 ·
Doppler effect spectrum of a star
- mpswee2
- · Replies 6 ·
Magnetic Fields; effect on unknown particle?
- exi
- · Replies 11 ·
How Can You Rearrange the Formula a=(vf-vi)/t to Solve for vf?
- Tiplerfan
- · Replies 6 ·
Can Electron Movement Be Controlled by Magnetic Fields?
- R3N3GAD3
- · Replies 4 ·
Quoting Uncertainties in Radioactive Decay Counts
- benedwards2020
- · Replies 1 ·
Magnetic Field Due To Moving Charges: An Unsound Conclusion?
- Sleek
- · Replies 1 ·
What are the factors which affect the travel of sound through
- unique_pavadrin
- · Replies 3 ·
Energy conservation (2 carts and a spring)
- mujadeo
- · Replies 7 ·
Magnetic flux through rectangular loop from straight wire
- kiwikahuna
- · Replies 1 ·
What is Jim Goff's hourly wage in Drilling was never too fun?
- niyati
- · Replies 4 ·
Find the maximum induced emf in the large coil solenoid
- kiwikahuna
- · Replies 2 ·
Induced vibrations and resonances
- danago
- · Replies 3 ·
Solve Physics Calc: Energy Expenditure for Adam's Water Intake
- warrior86
- · Replies 3 ·
Ranch Hand's Jump: Horse Speed & Air Time
- niyati
- · Replies 3 ·
Finding speed of sound from frequency vs length graph
- benedwards2020
- · Replies 7 ·
What Is the Minimum Coefficient of Friction Needed in a Rotating Cylinder Ride?
- blader324
- · Replies 25 ·
Calculating Angle of Wooden Stick Attached to Hinge Above Water
- Waxterzz
- · Replies 7 ·
Can a snapping cable transmit information faster than light?
- louk
- · Replies 7 ·
Projectile motion with 15° angle and 3.5s flight time
- squall325
- · Replies 6 ·
Calculating Time and Velocity for a Speedboat Approaching a No-Wake Buoy
- niyati
- · Replies 7 ·
What is the necessary Q for good AM reception?
- t_n_p
- · Replies 6 ·
Centripetal acceleration of ball and rope
- blader324
- · Replies 4 ·
2 blocks, on ontop of the other
- mujadeo
- · Replies 6 ·
If hand lets go, what force keeps the block moving?
- mujadeo
- · Replies 5 ·
Why does dropping a penny from a greater height result in more pain upon impact?
- jumbogala
- · Replies 6 ·
What Is the Total Energy Stored in a Magnetic Field Outside a Sphere?
- jesuslovesu
- · Replies 1 ·
How Does a Cockroach Affect Angular Velocity When Moving on a Disk?
- suspenc3
- · Replies 7 ·
Basic Electrical Test 12 Questions
- acamic01
- · Replies 8 ·
Why use sin^2() in calculating a potential and how can you go from 3 to 5?
- Bert
- · Replies 2 ·
How Do Phase Relationships Affect Voltage Waveforms in an LCR Circuit?
- t_n_p
- · Replies 6 ·