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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Why Do Tilting Trains Reduce Side Forces on Banked Curves?
- JoshuaR
- · Replies 6 ·
Finding unknown wavelength from diffraction grating separation
- jesuslovesu
- · Replies 3 ·
Kinetic friction of a wood block
- spin360
- · Replies 7 ·
Geometrical Optics: Image of Object 2m Away From Convex Mirror
- jst81161
- · Replies 1 ·
What is the Phase Difference between Two Interfering Light Rays?
- Funktimus
- · Replies 2 ·
Rear Wheel Driven Car Rolling Friction
- pcdagr8
- · Replies 5 ·
Supporting 1100kg Steel Beam w/ 6200N Ropes
- spin360
- · Replies 4 ·
How High Was the Plunger Released to Compress the Springs?
- JoshuaR
- · Replies 2 ·
Pendulum Period with Free-Spinning Disk: How does it differ from a fixed disk?
- anand
- · Replies 10 ·
Density of water vapour in the air following compression if it were an Ideal Gas
- Hendrick
- · Replies 8 ·
How to Solve a Tough Trampoline Problem?
- MrMath
- · Replies 4 ·
Integral of e^(-z) dz / (z - (pi*i)/2)
- laura_a
- · Replies 1 ·
Center of mass and distance ratio
- kthouz
- · Replies 1 ·
Intro Physics Tutorial Videos: Where to Find Them?
- Ry122
- · Replies 1 ·
Static equlibrium on a diving board
- ph123
- · Replies 2 ·
Momentum Theory To Solve Car Crash?
- Gordon Arnaut
- · Replies 3 ·
Tanker ship with tugboats pushing it: why is my acceleration so high?
- PJ81
- · Replies 4 ·
How Strong is the Electric Field Across a Cell Membrane?
- Boozehound
- · Replies 1 ·
Which makes a better prism, diamond or glass?
- Bradracer18
- · Replies 4 ·
How Does Relativistic Motion Affect Newton's Second Law?
- limiss
- · Replies 2 ·
Free body diagram : Compression and Tension
- alchemphy
- · Replies 3 ·
Calculating Speed and Max Transverse Velocity of a Transverse Wave
- croyboy
- · Replies 5 ·
Solving a circuit using Kirchhoff's Rules
- scarecrow425
- · Replies 2 ·
Solving Ampere's Law for Parallel Wires
- simplicity12
- · Replies 4 ·
Open-Closed Tube: Tension in 24.0cm Wire at Fundamental Frequency
- skinard360
- · Replies 1 ·
How Fast Does an Electron Move Between Capacitor Plates?
- Boozehound
- · Replies 5 ·
Hi what formula do i use to find for my question
- ImsoFly
- · Replies 21 ·
How Do You Calculate the Force of Air Friction on a Falling Basketball?
- renixrawr
- · Replies 2 ·
Calculating Torque on a Potter's Wheel
- chamonix
- · Replies 4 ·
Why is pyramid volume one-third base times height?
- .hacker//Kazu
- · Replies 20 ·
How long does it take a 390 N force to stop a 0.15 kg baseball?
- JMarino
- · Replies 8 ·
Proton accelerating in a 2.41E+3 N/C electric field
- Boozehound
- · Replies 11 ·
Two spheres in contact pushed at the left: what happens to each?
- alchemphy
- · Replies 2 ·
How Is Slit Width Calculated in Single Slit Diffraction?
- SamTsui86
- · Replies 2 ·
Efficiency of an elastic band. Hooke's Law
- Atomicbomb22
- · Replies 8 ·
Find Center of Gravity Distances for Cut Discs
- crossfacer
- · Replies 3 ·
Calculating Velocity of Electrons in Electric Field
- wordoflogic
- · Replies 1 ·
Can Stone Escape an Asteroid's Gravitational Pull?
- imy786
- · Replies 4 ·
Explosion Physics Problem: Solving for Velocity and Direction of Third Piece
- silverwing57
- · Replies 3 ·
How Is the Angular Frequency of a Bead on a String Calculated?
- Chopo
- · Replies 8 ·
Rate of heat radiated from a person
- Hendrick
- · Replies 3 ·
How Is Angular Width Calculated in Lens Optics?
- SamTsui86
- · Replies 1 ·
How Does Human Skin Radiate Heat in a Cooler Room?
- owura143
- · Replies 1 ·
Grounding Cars: Why a Rubber Strip is Needed
- Ry122
- · Replies 2 ·
Mass of planet, given only Earth's mass?
- paperclip
- · Replies 4 ·
Will a satellite with incorrect speed spiral or orbit elliptically?
- impendingChaos
- · Replies 1 ·
How can I design an experiment to test bouyancy for my physics EEI?
- Flamein_firen
- · Replies 4 ·
Centripetal force question(involves satellite going around earth.
- bilbobaggins
- · Replies 11 ·
Calculating Energy Dissipation in Free Fall with Drag Force
- impendingChaos
- · Replies 3 ·
Angle, horizontal range, velocity
- marinabradaric
- · Replies 1 ·
Finding phase constant phi in SHM using inverse cosine vs inverse tangent
- mike1467
- · Replies 3 ·
How Is the Third Dark Fringe Calculated in Diffraction Problems?
- cheechnchong
- · Replies 2 ·
Calculating Temperature Outside with Speed of Sound
- xRadio
- · Replies 13 ·
Oscillations of a mass on a spring.
- Death-Unit
- · Replies 2 ·
How much ice to float a 80 Kg person
- iceman_ch
- · Replies 3 ·
How Much Energy Does a Human Lose Through Radiation in a Cool Room?
- owura143
- · Replies 1 ·
Calculating Stopping Time and Distance Using Impulse Momentum Theorem
- JMarino
- · Replies 10 ·
What is uniform acceleration?
- ImsoFly
- · Replies 3 ·
How Much Coffee Spills From a Heated Beaker?
- owura143
- · Replies 11 ·
Energy loss through oven insulation over 7 hours
- owura143
- · Replies 2 ·
Absolute pressure at bottom with oil and water layers
- Fivetoone215
- · Replies 1 ·
Natural frequency of tuning fork
- fruitl00p
- · Replies 10 ·
Finding mass of water cooling a 241 kg cast-iron engine
- cardsrams82
- · Replies 7 ·
Does Hammer Weight Affect Valve Efficiency in Spring-Powered Systems?
- Collapczar
- · Replies 11 ·
How Do You Calculate Thermal Conductivity in a Heated Metal Rod?
- cyberdx16
- · Replies 1 ·
Angle of Refraction: Prove Incident Beam is Parallel to Emerging Beam
- Ronnin
- · Replies 1 ·
Star emission at different temperatures
- Yarka
- · Replies 10 ·
Combining Two Transverse Waves to a Standing Wave
- fruitl00p
- · Replies 22 ·
Deriving an Equation from a graph
- Murdoc88
- · Replies 12 ·
Effective Focal Length of Two Thin Lenses
- Chadlee88
- · Replies 2 ·
Solving for current in AC circuit with complex impedance
- VinnyCee
- · Replies 4 ·
Calculate the safety factors for crane
- hagopbul
- · Replies 3 ·
Is it possible to implement an XOR gate using only NOR gates?
- kel
- · Replies 11 ·
How Does White Light Affect Double Slit Interference Patterns?
- aquabum619
- · Replies 3 ·
How Does Beat Frequency Help Tune a Violin to Concert A?
- waterfolwer
- · Replies 3 ·
Work done by a friction force, block moving up a ramp-question
- AndreaTechGirl
- · Replies 12 ·
Work done on a 125g ball with 85 N force through 78 cm
- rum2563
- · Replies 24 ·
Is it more efficient to refrigerate milk immediately or leave it out?
- kumar_23
- · Replies 4 ·
What Formula is Used to Calculate Braking Distance and Deceleration?
- ImsoFly
- · Replies 16 ·
Why are there two lens positions that focus an image for a given object-screen distance?
- jst81161
- · Replies 1 ·
Why Didn't the Disk Rotate in Maxwell's Magnetic Field Experiment?
- simplicity12
- · Replies 1 ·
How many ice cubes were added to cool the pool to 17°C?
- cyberdx16
- · Replies 4 ·
Kinetic energy/ net work problem
- hhq5000
- · Replies 3 ·
Angular Momentum of 2kg Particle Moving at 4.5m/s
- Rasine
- · Replies 1 ·
Moment of Inertia Calculation for Rotating Disc
- bidhati
- · Replies 1 ·
Color changes as thin coating builds up on glass observed in reflected white light
- aquabum619
- · Replies 2 ·
Finding thickness of a thin film question
- feelau
- · Replies 4 ·
Calculating Electric Flux Through a Cube
- stylez03
- · Replies 6 ·
Finding slit spacing from tenth minimum in Young's double-slit experiment
- aquabum619
- · Replies 3 ·
Understanding Standing Wave Patterns at 50Hz Frequency
- Ry122
- · Replies 4 ·
Convex Refraction: Why do objects appear larger when viewed through a fishbowl?
- aquabum619
- · Replies 3 ·
Ocean Depth Calculation Using Sonar
- tdk
- · Replies 2 ·
Understanding Conductance and Resistance in Coaxial Cables
- brad sue
- · Replies 3 ·
How Do Ohm's and Kirchhoff's Laws Solve This Circuit Problem?
- savoylen
- · Replies 19 ·
Kinetic Energy without External Force
- srikanth.isro
- · Replies 4 ·
How to Calculate Tension for Fundamental Frequency at 60hz
- Ry122
- · Replies 1 ·
Where does the 4kg piece land in this projectile motion problem?
- ratiug
- · Replies 2 ·
Photoelectric effect, h/e ratio
- Azndude51
- · Replies 1 ·
When do quantum effects become important for a He-Ne laser?
- WolfOfTheSteps
- · Replies 7 ·
Deriving a Proportionality Statement for Centripetal Force and Frequency
- Murdoc88
- · Replies 9 ·