Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Shouldn't these equations produce the same result?
- Breadsticks
- · Replies 1 ·
What Should the Initial Velocity of the Grenade Be in a High-Speed Car Chase?
- jasonchiang97
- · Replies 4 ·
Absolute Visual Magnitude of Stars
- Jimbob999
- · Replies 1 ·
How Is the Nomenclature in 13C(alpha,n)16O Read and What Do Alpha and n Mean?
- heartofcourage
- · Replies 1 ·
Distance traveled during a head on collision
- Kevin Krock
- · Replies 36 ·
Hooks Law F = kx Book answer wrong I think
- Barclay
- · Replies 8 ·
Projectile Motion Water hose Question
- jasonchiang97
- · Replies 15 ·
What is the minimum safe following distance at highway speeds?
- Alexis Cooper
- · Replies 3 ·
Capacitance (Potential Difference and Energy)
- kilnvzol
- · Replies 10 ·
Determining charges and current distributions
- TubbaBlubba
- · Replies 1 ·
Measuring a paper clip with precision
- dirtcrazy
- · Replies 2 ·
2 sphere system, Conservation of Energy and Momentum
- Better WOrld
- · Replies 59 ·
AP Physics differential equation
- MrPyromaniac
- · Replies 2 ·
Three forces equilibrium and Newton's third law true/false
- chance master
- · Replies 4 ·
Flux Through Concentric Spheres with Varying Charge Density
- SarahAlbert
- · Replies 2 ·
How can the motion of point A be determined in this system?
- Vibhor
- · Replies 35 ·
Heat Transfer by Nichrome wire and Steel
- zwarrior
- · Replies 20 ·
Relativistic velocity problem with x and y components
- Luke Cohen
- · Replies 4 ·
Help labeling a locking mechanism diagram in SketchUp
- erthiph
- · Replies 1 ·
What Is the Role of the BC548 Transistor in a Piezoelectric Energy Harvester?
- menloon
- · Replies 2 ·
Finding normal and tangential acceleration
- Inveritatem
- · Replies 3 ·
Using dimensional analysis to check which kinematic equations are valid
- Yousufshad
- · Replies 7 ·
Finding angular acceleration when tire radius is not given
- Breadsticks
- · Replies 3 ·
When will velocities of the trains equal?
- Entr0py
- · Replies 5 ·
Calculating Time in Air for a Vertically Thrown Ball
- Entr0py
- · Replies 7 ·
How does the counterweight affect elevator power?
- Janiceleong26
- · Replies 9 ·
Struggling to Understand Pulley System Dynamics
- JoshW
- · Replies 4 ·
What is the Formula for Calculating Entropy Change in a Phase Transition?
- Nicco de Vera
- · Replies 3 ·
Work done by charge in electric field on the xyz plane
- PhysicsQuest1
- · Replies 8 ·
Some multiple choice questions.
- goonking
- · Replies 2 ·
Why Is My Calculation of Vertical Hydrostatic Force Incorrect?
- The Real Nick
- · Replies 14 ·
Why Is Gravity Sometimes Negative and Sometimes Positive in Equations?
- jcharle111
- · Replies 2 ·
Deriving the Compton Effect Equation: A System of Equations Approach
- eje5758
- · Replies 1 ·
Calculating Electrostatic Force on a Suspended Gossamer Spider
- Callix
- · Replies 7 ·
Finding the time and maximum height at highest point
- NotFrankieMuniz
- · Replies 6 ·
Conservation of momentum in relativistic disintegration
- Frank Einstein
- · Replies 4 ·
Value of gamma in adiabatic process
- Pouyan
- · Replies 2 ·
What is the angle between coupled forces with a given moment and magnitude?
- whitejac
- · Replies 3 ·
Using friction in circular motion
- PAstudent
- · Replies 8 ·
Inelastic collision Two angles and final velocities
- -PhysicsMajor-
- · Replies 3 ·
Kepler's third law of planetary motion
- accountdracula
- · Replies 16 ·
Why does the standing wave equation have different sine and cosine forms?
- Voidy
- · Replies 1 ·
Calculating velocity with force
- mia_material_x1
- · Replies 3 ·
How long can the battery power the lightbulb?
- TravvyM
- · Replies 3 ·
Calculating acceleration of gravity on a planet
- mia_material_x1
- · Replies 1 ·
Mass of one component in two component w/feed flowrate
- BigJon
- · Replies 2 ·
Velocity transformations - light at an angle
- Phynos
- · Replies 4 ·
Calculating electrostatic pressure
- June_cosmo
- · Replies 2 ·
What is the initial velocity of the ball just as it enters the screen?
- camp_loll
- · Replies 1 ·
Is it possible to implement this circuit operation?
- ToonBlue
- · Replies 4 ·
How to find the time-base setting for a cathode ray oscilloscope
- Janiceleong26
- · Replies 3 ·
What is the spring constant for the spring?
- songminho
- · Replies 2 ·
Minimum output e.m.f. of the power source
- Janiceleong26
- · Replies 2 ·
Minimum F2: perpendicular to FR or to F1?
- werson tan
- · Replies 10 ·
Charged balls connected by spring
- yango_17
- · Replies 10 ·
Difference between Centroid and Centre of Pressue
- Yam
- · Replies 3 ·
Electron potential/momentum problem
- orangeincup
- · Replies 5 ·
What is the acceleration of each block?
- siimplyabi
- · Replies 5 ·
Is My Calculation of 81.48 Meters in Projectile Motion Correct?
- Kingyou123
- · Replies 3 ·
Why Does Car A Appear to Travel Southeast from Car B's Perspective?
- Michele Nunes
- · Replies 4 ·
What is the charge density and electric field inside a polarized hydrogen atom?
- yango_17
- · Replies 1 ·
Tension on cable CD when moment on A is Zero.
- Yan_33
- · Replies 1 ·
Ratio of the Magnitude of gravitational force?
- Albert24
- · Replies 5 ·
3D Statics Equilibrium - Dot Everything with Vector P?
- absolutezer0es
- · Replies 3 ·
[Theory] What's the initial velocity of this falling object?
- Kanyka
- · Replies 8 ·
Finding partition functions of statistical system
- CAF123
- · Replies 7 ·
What angle does the hanging mass make?
- diredragon
- · Replies 6 ·
What are the equal-and-opposite forces of friction forces?
- thecommexokid
- · Replies 3 ·
Creating a positron and a electron with a photon
- Frank Einstein
- · Replies 4 ·
Why do filaments of bulbs heat up?
- Jimmy87
- · Replies 1 ·
Finding the sign of refractive power for three thick lenses in sequence
- bowlbase
- · Replies 7 ·
Finding Turns Ratio for Different Transformer Configurations
- Altan Tok
- · Replies 1 ·
How to Find Electric Field for Concentric Spheres Using Gauss's Law?
- SarahAlbert
- · Replies 8 ·
Center of mass of medicine ball
- Rifscape
- · Replies 4 ·
Understanding centripetal force
- SamC
- · Replies 6 ·
Calculation of work done -- force confusion
- gracy
- · Replies 19 ·
Minimum force required to form sphere
- Tanya Sharma
- · Replies 36 ·
Fisherman's boat Relative motion
- heythere1010
- · Replies 29 ·
Physics velocity acceleration and force -- Project
- 353535amelia
- · Replies 6 ·
Charged Particles (Potential Energy)
- kilnvzol
- · Replies 4 ·
What Is the Ground Speed of a Plane with a North Wind?
- Euler2718
- · Replies 2 ·
Finding the direction angle when subtracting force vectors P and Q
- dlacombe13
- · Replies 6 ·
What is the weight of a radioactive sample with a given half-life and activity?
- jije1112
- · Replies 3 ·
What angle to shoot the arrow at?
- Ritzycat
- · Replies 17 ·
Airplane Motion in Plane: West 900 km/h vs NE 300 km/h
- RENI2345
- · Replies 1 ·
Inelastic car collision, answers aren't matching up
- BananasAreCool
- · Replies 4 ·
Struggling with Uranium-235 Nuclear Fission
- accountdracula
- · Replies 5 ·
Position with respect to velocity
- Robb
- · Replies 1 ·
How Is Tension Calculated in a Rope During Rock Climbing?
- LostAce
- · Replies 18 ·
How do i figure out area under the the red-brown line graph?
- Kaleem
- · Replies 20 ·
Heat radiated from a copper block at 250°C per square cm
- annedi
- · Replies 12 ·
Lattice constant, space between planes?
- orangeincup
- · Replies 1 ·
Why is the E cross B drift velocity constant in charged particle motion?
- alannakamura
- · Replies 6 ·
How much solar radiation is absorbed by a snow-covered surface?
- annedi
- · Replies 2 ·
Gravitational force confusing question
- Wesdxc
- · Replies 4 ·
Two Prisms connected by a material of refractive index n
- Potatochip911
- · Replies 3 ·
Unsolvable tension force problem
- KABOOM_physics
- · Replies 9 ·
Two rocks launched up/collison (Kinematics)
- Moe777
- · Replies 10 ·
How Do You Calculate Shear Stress in a Coronary Artery?
- Gwozdzilla
- · Replies 2 ·
[Physics waves] Spring and Block on inclined plane
- masterchiefo
- · Replies 21 ·