Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
How High Was the Shelf If a Ball Rolls Off at 8m/s and Hits the Ground in 0.22s?
- PhilMTSU12
- · Replies 14 ·
What is the Force Required to Move a Block up an Inclined Plane?
- Agent M27
- · Replies 6 ·
How Far Should a Magnifying Glass Be Held for Maximum Angular Magnification?
- A_lilah
- · Replies 1 ·
Solving for Ion Mass in Magnetic Field
- thereddevils
- · Replies 4 ·
How Does Frequency Variation Affect Phasor Current in a Series Circuit?
- viciado123
- · Replies 6 ·
Solving Heating of Piston in Cylinder w/ Mass & Gravity
- songoku
- · Replies 12 ·
Determining the constants R and L of a coil
- viciado123
- · Replies 5 ·
How Do You Calculate Wavelength in a Diffraction Experiment?
- SprintsMcgee
- · Replies 1 ·
Launch of a mass attached to rope with mass
- benf.stokes
- · Replies 16 ·
Simple harmonic motion and friction
- XxBollWeevilx
- · Replies 12 ·
Photoelectric Effect of hydrogen atom
- tigg3992
- · Replies 7 ·
Are My Multiple Choice Answers Correct?
- Paymemoney
- · Replies 3 ·
Calculating Spring Constant for Horizontal Oscillation of a Mass
- cfalvo
- · Replies 1 ·
How do I calculate instantaneous velocity?
- Michael17
- · Replies 2 ·
Force due to three magnetic fields
- Frostfire
- · Replies 4 ·
Mass on Vertical Spring stretch
- pleasehelpme6
- · Replies 9 ·
Mirror/Lens Equation and Resistors in Parallel
- jefgreen
- · Replies 11 ·
Voltage caused by change in capacitor plate seperation
- satellitelove
- · Replies 2 ·
Light transmission through two plastic disks with n=1.5
- pinkberry
- · Replies 3 ·
How does one calculate his distance to the center?
- moonman239
- · Replies 3 ·
Elongation of wires from same material with different dimensions
- itheo92
- · Replies 1 ·
Two rings on horizontal wire with hanging masses and friction
- thereddevils
- · Replies 6 ·
Electron deflected via magnetic field
- Frostfire
- · Replies 1 ·
Why Is the Lag Time 60 Degrees Instead of 72 Degrees in Wave Phase Calculations?
- ishterz
- · Replies 3 ·
Vector Resolution: Engineering Math Exam Question
- pat666
- · Replies 4 ·
Car Collision Dynamics Analysis
- kian651
- · Replies 4 ·
Car deceleration at 7.0 m/s² stopping in 2.0 s
- space50
- · Replies 2 ·
How would weight distribution affect wheel performance on a vehicle?
- Gird.
- · Replies 1 ·
Spring scale amplitude when turkey drops onto plate
- louza8
- · Replies 1 ·
Laser simultaneity in different reference frames at 0.6c
- zumulko
- · Replies 6 ·
What Is the Optimal Angle Between Polarizers to Maximize Light Transmission?
- Samuelb88
- · Replies 6 ·
What is the Electric Field Between Deflection Plates in a TV Tube?
- raikchuuyl
- · Replies 1 ·
Electrostatic force between sugar grains and hot-air balloons
- raikchuuyl
- · Replies 2 ·
Projectile Motion - V0 is 5 times v @ max height?
- Beamsbox
- · Replies 8 ·
Boost Your Resistance IQ with This Tricky Question - Post Deleted
- wadahel
- · Replies 3 ·
Textbook recommendations for General Physics I
- iurod
- · Replies 6 ·
Time delay between wave pulses in two wires supporting an irregular beam
- MrShimizu
- · Replies 8 ·
What is the spring constant for an elastic cord with varying weights?
- mortho
- · Replies 4 ·
Force pairs between 5 stacked objects using Newton's laws
- emr13
- · Replies 10 ·
Working equation for change in time (Impulse)
- tsacket
- · Replies 7 ·
Launch with Chains: Solving a Hard Physics Problem
- benf.stokes
- · Replies 3 ·
Why Can't You Raise Your Leg Sideways Against a Wall?
- zainriaz
- · Replies 1 ·
Uniform circular motion; two balls, two cables, and a post; no gravity
- emr13
- · Replies 7 ·
What Are the Best Creative Designs for a Water Balloon Launcher Project?
- ƒ(x)
- · Replies 2 ·
Circuit analysis in series vs. parallel
- daviddee305
- · Replies 4 ·
Vector addition, subtraction and dot product calculations
- zainriaz
- · Replies 11 ·
How Do Doppler Effect and Spring Motion Influence Perceived Sound Frequencies?
- Hitman6267
- · Replies 1 ·
Why is AM radio reception clearer than FM in valleys?
- kylepetten
- · Replies 4 ·
Moving train - kinematics problem
- silvercats
- · Replies 2 ·
Is my simplified bullet drop equation accurate for long-range shooting?
- warfreak131
- · Replies 2 ·
How Does Doubling the F Number Affect Exposure Time?
- Lachlan1
- · Replies 4 ·
Half-life of isotope from decay rate measurements
- MrChaos
- · Replies 3 ·
Converging lens becomes Diverging lens
- A_lilah
- · Replies 4 ·
Brightness of Light Bulbs in a Circuit
- ghostbuster25
- · Replies 7 ·
Vectors (?), Change in Velocity, Average Accel.
- mfu
- · Replies 3 ·
Physics question help
- jbravo07
- · Replies 5 ·
How Much Helium Is Needed to Lift a 340kg Balloon?
- pat666
- · Replies 14 ·
Moment of Inertia of a grouping of pennies
- EventHorizon4
- · Replies 6 ·
Angular Velocity of weighted plates
- randomss444
- · Replies 1 ·
Electrostatics physics question, by checking my answers
- Roro312
- · Replies 1 ·
What similarities can be seen in the motion of these five objects?
- hereitgoes
- · Replies 1 ·
Calculating Transformer Parameters
- superaznnerd
- · Replies 2 ·
Pulley, two objects, frictionless plane; find acceleration and cable tension
- emr13
- · Replies 10 ·
How Does a Star's Mass Loss Affect Satellite Orbit Distances?
- bon
- · Replies 3 ·
Conducting rail ciruit, against gravity
- Frostfire
- · Replies 2 ·
Why is my steel sphere density 0.0079 g/cm³ instead of 7.9 g/cm³?
- derivethis
- · Replies 4 ·
Specific Gravity and Pressure in Flowing Pipe
- Maneuver1
- · Replies 1 ·
Calculating Gravity at Half Earth's Radius
- bon
- · Replies 6 ·
Moment of inertia and axis of symmetry
- bon
- · Replies 3 ·
Shape of surface of fluid in a rotating tank
- superiority
- · Replies 1 ·
What is the Correct Answer for These Multiple Choice Physics Questions?
- Paymemoney
- · Replies 12 ·
Which Rolling Object Reaches the Bottom of the Ramp First?
- bon
- · Replies 10 ·
Mechanics of smooth rings and string
- thereddevils
- · Replies 6 ·
Elastic collision: showing u1 > (1+e)m2u2/(m1−em2)
- thereddevils
- · Replies 14 ·
What is the direction of velocity when a particle hits the surface of the sea?
- thereddevils
- · Replies 2 ·
Loss of energy in the system as a result of the collision
- thereddevils
- · Replies 2 ·
Solving Archimedes Principle: 6500kg Iceberg in Sea
- pat666
- · Replies 2 ·
Capacitance in concentric shells
- OptimusPwn
- · Replies 3 ·
What is the change in kinetic energy for a block attached to a stretched spring?
- pleasehelpme6
- · Replies 14 ·
Electric field strength at the midpoint between the two charges.
- momopeaches
- · Replies 3 ·
Why Can't the Ball from the Shorter Building Break Through the Barrier?
- John H
- · Replies 4 ·
How Does Connecting a Wire Affect Light Bulbs in an Inductive Circuit?
- fhqwgads2005
- · Replies 3 ·
Thin Film Interference Problems
- 404
- · Replies 7 ·
Understanding Wave Intensity and Superposition
- DarkStalker
- · Replies 11 ·
Is Earth in Danger from the Incoming Comet?
- Troodon
- · Replies 1 ·
Thermodynamics: Conceptual Question
- cdlegendary
- · Replies 1 ·
Finding magnification for a curved mirror with 10 cm radius of curvature
- lynchdemartin
- · Replies 6 ·
Newton 2nd law of a fish in an elevator
- Agent M27
- · Replies 2 ·
Solving for Angle of Elevation: p = 12.67°
- thereddevils
- · Replies 5 ·
How do balance, charge, rotation, and motion interact in everyday scenarios?
- ubaidvu
- · Replies 3 ·
How Do You Verify Equations for a Balancing Robot?
- auto
- · Replies 1 ·
Calculating Work Done by Engine on Railway Wagon
- bon
- · Replies 2 ·
Solving the Particle Velocity at Time t=5
- thereddevils
- · Replies 3 ·
Very likely a stupid question =S Finding acceleration with formula V^2=u^2+2*a*d
- zachattak
- · Replies 5 ·
How Is the Moment of Inertia Constant Determined Experimentally?
- stalebrownie
- · Replies 1 ·
Bottle Rocket Velocity: Constant Force, Increasing Rate
- jerryez
- · Replies 2 ·
What are some potential topics for an extended essay in acoustics research?
- dsds1000
- · Replies 1 ·
What is the maximum force reduction for a 4 m ramp in a warehouse?
- jerryez
- · Replies 9 ·
What is the approximate diameter of an oil molecule?
- xxcherry06xx
- · Replies 5 ·
How Do You Solve 0.51 = 1,800((v^2)/13)?
- randomss444
- · Replies 1 ·