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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Moment / CG question regarding a bicycle
- JohnNova
- · Replies 1 ·
Elastic Collisions of steel balls
- kristen151027
- · Replies 6 ·
Bohr Model: Calculating Wavelengths of Emitted Photons
- tigerguy
- · Replies 3 ·
How Do You Calculate Mechanical Properties from Load-Displacement Data?
- teng125
- · Replies 1 ·
What maximal load can be lifted from a depth of 1000 m ?
- teng125
- · Replies 4 ·
Thermal Equilibrium: 0.50kg Ice & 1kg/2kg Boiling Water
- mengshuen
- · Replies 4 ·
Nodal Points in Sound: Significance Explained
- Jest3r
- · Replies 3 ·
What happens to the temperature of the gas?
- mengshuen
- · Replies 10 ·
Help with Work & Power Problem: 60kg Student on Incline
- jCarlson
- · Replies 4 ·
How to Create a Pop-Up Effect with Paper?
- crays
- · Replies 4 ·
Threshold wavelength photoelectrons
- delongk
- · Replies 6 ·
Speed of a photon with wavelength = 500nm?
- delongk
- · Replies 8 ·
Range of projectile traveling through two points at same elevation
- UrbanXrisis
- · Replies 2 ·
What are the deviations for 145H8/d9 based on tolerance tables?
- teng125
- · Replies 4 ·
Force-Elongation Diagram: Determining Ductility/Brittleness
- teng125
- · Replies 2 ·
How Does Electric Potential Apply to Spheres with External Charges?
- Saketh
- · Replies 1 ·
Convert Celsius to Kelvin: Easy Guide & Formula | 2 Celsius = 273.15 Kelvin
- MRCHEM
- · Replies 14 ·
Projectile Launching: Calculate Speed to Pass Through Point
- squid
- · Replies 4 ·
How to Calculate Voltage Drop in a Circuit
- peavey_wolfgang_2000
- · Replies 3 ·
Calculate Bending Moment & Stress of Axle w/ 300N Load
- teng125
- · Replies 8 ·
What are the stable isotopes of lead and bismuth?
- Amith2006
- · Replies 10 ·
Need info on how do helicopter stay on the same place with res to earth
- jainabhs
- · Replies 9 ·
Final velocity of both vehicles
- UrbanXrisis
- · Replies 5 ·
How Do You Calculate the Acceleration of a Pulley System?
- danago
- · Replies 10 ·
How Does Air Behave as Sound from a Tuning Fork Travels to a Listener?
- physics_06er
- · Replies 1 ·
Examples of Newton's Laws of Motion in Practice
- pavadrin
- · Replies 3 ·
Fastest Photoelectron Emission: 400nm Light on 600nm Threshold Surface"
- delongk
- · Replies 1 ·
How does weight distribution work in water?
- Idea04
- · Replies 6 ·
What is the force of kinetic friction acting on the skier in this scenario?
- chmilne
- · Replies 8 ·
Calculating Loss of Kinetic Energy and Power Dissipated During Braking
- xto
- · Replies 2 ·
How Does a Grating Spectroscope Work?
- spoonthrower
- · Replies 1 ·
How to design a 3 phase induction motor
- copresh1
- · Replies 3 ·
Monkey or Weight: Which Will Reach the Top First?
- whoelsebutme
- · Replies 2 ·
Gravitational Potential Energy formula
- Fizziks_Fan
- · Replies 2 ·
Gas Expansion and Work: Effects on Internal Energy and Temperature
- gandharva_23
- · Replies 2 ·
Time difference in projectile motion
- asdf1
- · Replies 5 ·
Just need a confirmation (Force in uniform circular motion)
- highc
- · Replies 1 ·
What is the acceleration and sliding time of a car on a rotating platform?
- Kolahal Bhattacharya
- · Replies 4 ·
Platform on Springs, how to find amplitude?
- taveuni
- · Replies 6 ·
Force of gravity between 2 bars
- NotMrX
- · Replies 9 ·
Green Pea Discharge: How Much Charge Can It Hold?
- cky_uk
- · Replies 6 ·
Transformer Winding Calculations: Primary to Secondary Current and Voltage
- cky_uk
- · Replies 4 ·
Why can't helium reach 0 K and become solid according to kinetic theory of gas?
- gandharva_23
- · Replies 8 ·
Understanding the Equation (Gm)/(r-S)^2 = (GM)/r^2
- highc
- · Replies 4 ·
Why High Energy Lines in Balmer Series Not Visible?
- jubba
- · Replies 3 ·
A question from kleppner's book
- MathematicalPhysicist
- · Replies 20 ·
How Do You Format Fractions in LaTeX?
- NotMrX
- · Replies 4 ·
Angular Momentum of Colliding Pucks: 80g & 120g Mass, 4cm & 6cm Radius
- vijay123
- · Replies 1 ·
How Do You Determine the Period and Speed from a Sine Wave Graph in SHM?
- physics_06er
- · Replies 7 ·
Electric Potential Hemisphere Problem
- Saketh
- · Replies 4 ·
Solving the Physics Problem: Modeling a Spinning Ball Dropped on Floor
- NotMrX
- · Replies 2 ·
Gravitational satellite question.
- al_201314
- · Replies 13 ·
Galaxies, which are the smallest and least luminous type of galaxy?
- euphoria0697
- · Replies 23 ·
Converting Meters per Second Squared to Kilometers per Hour Squared
- Pencil
- · Replies 4 ·
Concept problems. multi choice check my answers.
- PhillyGixxer
- · Replies 5 ·
How Does Mass Affect Calculations in Non-conservative Force Problems?
- kristen151027
- · Replies 4 ·
Object Distance From Converging Lens for 1% Focal Length Difference
- spoonthrower
- · Replies 3 ·
Earths Centripetal Acceleration Effects
- NotMrX
- · Replies 8 ·
Bead on a Wire and Harmonic Motion
- NotMrX
- · Replies 1 ·
Help with kepler's law and gravitation
- nithin
- · Replies 3 ·
Shotputter - Projectile Motion
- heyash88
- · Replies 3 ·
Need help: Calculating the intensity of a reflected ray
- madhukarrapaka
- · Replies 18 ·
Which Way Will the Spool Roll? Q&A on Newton's Law
- ksle82
- · Replies 5 ·
How Do You Calculate Proton Speed and Momentum in Special Relativity?
- delongk
- · Replies 7 ·
Calculating Wavelength in Young's Double-Slit Experiment
- MD2000
- · Replies 2 ·
Understanding Loop Problems in Roller Coaster Physics
- moonpearl
- · Replies 5 ·
Which Color of Light is Nearest to the Central Maximum in Diffraction?
- spoonthrower
- · Replies 1 ·
Question on Thin Film Interference
- tigerguy
- · Replies 11 ·
Rotating Disks - How to calculate final KE?
- taveuni
- · Replies 1 ·
Solving Friction Problem: Distance to Stop a Car
- ksle82
- · Replies 5 ·
Question on Diffraction Grating
- tigerguy
- · Replies 4 ·
Moon falls off during ecclipse?
- NotMrX
- · Replies 14 ·
Summer Assignment - resulting slick
- Snead1
- · Replies 3 ·
What Do p and l Represent in the Resistance Formula R = pl/A?
- anzgurl
- · Replies 3 ·
Need help with electric field questions thx
- ELHEK
- · Replies 2 ·
What is the parallel shift of the light beam?
- teng125
- · Replies 14 ·
How far will the water shoot out?
- ksle82
- · Replies 1 ·
Uniform Acceleration: Solving Problems with Solutions
- fabbo
- · Replies 17 ·
Electromagnetic induction-help with a problem
- endeavor
- · Replies 6 ·
Brewster's Angle: Light in Ethanol to Crown Glass - Significance
- physicsgal
- · Replies 5 ·
Can the Slope of a Graph Determine EMF and Internal Resistance?
- mininirime
- · Replies 7 ·
Qns on potential energy and forces
- coffeebeans
- · Replies 3 ·
Solve Thin Lens Equation: Diverging Lens, Virtual Image
- spoonthrower
- · Replies 2 ·
Are These Conceptual MCQs Challenging Your Understanding of Physics?
- al_201314
- · Replies 3 ·
Which Direction Minimizes the Area of a Moving Square Due to Length Contraction?
- Ester
- · Replies 6 ·
Induced current in a wire multiple choice question
- jubba
- · Replies 3 ·
Understanding Work and Energy to Solving Physics Questions
- al_201314
- · Replies 9 ·
Electric potential energy and displacement
- prolong199
- · Replies 3 ·
Special relativity and inertial frames of reference
- fatboy12341
- · Replies 4 ·
How Does Mercury's Density Affect Column Pressure in hPa?
- teng125
- · Replies 1 ·
Solving Optics Problems: Finding Angle of Light Refraction and Object Position
- JassC
- · Replies 6 ·
Why Is the Center of Gravity Calculation Resulting in Negative Coordinates?
- webren
- · Replies 8 ·
Uncovering the Mystery of A in Lattice Energy Equation
- Soilwork
- · Replies 1 ·
Calculating Force for a Box on an Inclined Ramp
- highc
- · Replies 3 ·
Acceleration of a block of ice - Dynamics
- richievuong
- · Replies 8 ·
Projectile Motion Long Jump Help
- singlish
- · Replies 2 ·
Why is the electric field strength not zero at x \gg R?
- Saketh
- · Replies 5 ·
How Is the Tension Calculated in the Main Cable Supporting a Piano?
- skinard360
- · Replies 1 ·
Newtonian mechanics and capstan
- Kolahal Bhattacharya
- · Replies 3 ·
Solving Statics Ladder Problem: Understanding the Use of Trigonometry and Torque
- webren
- · Replies 3 ·