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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How Does Earth's Slowing Rotation Affect Day Length Over Centuries?
- ePLUS
- · Replies 6 ·
Wavelength = deBroglie Wavelength?
- Krushnaraj Pandya
- · Replies 11 ·
Energy of Li2+ atom according to Bohr's model
- Krushnaraj Pandya
- · Replies 2 ·
Gravitation sum related to Centripetal Acceleration
- Urmi
- · Replies 5 ·
Minimum height to drop 0.1kg mass to lift 4kg mass on ground
- sal1234
- · Replies 9 ·
What is the Sign of Binding Energy for a Hydrogen-Like Atom?
- Krushnaraj Pandya
- · Replies 6 ·
Angular velocity of a simple pendulum
- Felipe Lincoln
- · Replies 2 ·
Finding elongation when point P moves to the spring's original end
- PhysicsBoi1908
- · Replies 10 ·
I'm having a comprehension issue with a 2-D motion problem.
- LugubriuousLamia
- · Replies 7 ·
Projectile Motion: Initial Velocity Derivation
- PhysicsIBStudent
- · Replies 4 ·
Calculating Charge and Force Using Coulomb's Law and Trigonometry
- Civil_Disobedient
- · Replies 6 ·
Radiation force on a solid hemisphere
- Krushnaraj Pandya
- · Replies 1 ·
Why wouldn't rotating the handle 90 degrees induce an EMF?
- bajerrrr
- · Replies 3 ·
Venturi mechanism: finding throat diameter for piston lift
- TimeRip496
- · Replies 9 ·
What Is the Mass of a Photon in Motion?
- Krushnaraj Pandya
- · Replies 23 ·
Wavelength-stopping potential dependence
- Krushnaraj Pandya
- · Replies 5 ·
Electrons in a cathode ray tube
- Robin04
- · Replies 4 ·
Is the block moving in an Atwood machine when climbing up a rope?
- jk494
- · Replies 6 ·
What is the viscous force acting on an oil drop in Millikan's experiment?
- Krushnaraj Pandya
- · Replies 6 ·
Do both balls reach the ground with the same speed?
- Gurasees
- · Replies 7 ·
Electromagnetism and a solid metallic sphere
- Jozefina Gramatikova
- · Replies 9 ·
Finding the electric field of insulated shell
- Physics Dad
- · Replies 6 ·
Potential Acceleration of an Atwood Machine
- john-b
- · Replies 7 ·
What Angle Causes Particles A and B to Collide?
- BeyondBelief96
- · Replies 3 ·
Object within a Pan Spring Motion
- srekai
- · Replies 3 ·
Uncertainty in the energy of a laser beam
- Krushnaraj Pandya
- · Replies 18 ·
Equilibrium Conditions for a Rotating Rod with Two Point Masses
- Amitayas Banerjee
- · Replies 19 ·
L-shaped bar torque equilibrium about pivot point A
- frkCarl
- · Replies 1 ·
Intuitive explanation of why work done by tension is 0?
- navneet9431
- · Replies 5 ·
Changing Acceleration in an Electromagnetics question
- Kosta1234
- · Replies 3 ·
How could the block A move to the left corner?
- navneet9431
- · Replies 5 ·
Kinetic energy of a photoelectron
- Krushnaraj Pandya
- · Replies 2 ·
Runner's average velocity with rest period and direction change
- Mary27
- · Replies 17 ·
Direction of friction in circular motion
- Vatsal Goyal
- · Replies 5 ·
Seperation between two charged ball
- Lady M
- · Replies 13 ·
Multi-part homework problem with parts a and b complete
- Jozefina Gramatikova
- · Replies 2 ·
Fluid static problem with wooden block being pulled down
- tonnieee
- · Replies 9 ·
Finding the center of mass of a hollow hemisphere
- navneet9431
- · Replies 11 ·
Conducting sphere Find the electric filed for r<a,a<r<b,r>b
- Jozefina Gramatikova
- · Replies 1 ·
Rolling Down an Off Center Cylinder on an Incline
- Silviu
- · Replies 2 ·
Express T' in terms of T, v, c for light pulse to moving rocket
- Silviu
- · Replies 2 ·
Reaction time while stopping a car
- baldbrain
- · Replies 29 ·
Conductors in capacitor equal but opposite charge?
- helios1234
- · Replies 3 ·
Simple harmonic motion - damping introduced
- Jozefina Gramatikova
- · Replies 10 ·
Writing Force equation in terms of pressure and area
- Beth N
- · Replies 5 ·
Finding Sandra's displacement walking from the mall to home
- ValerieL
- · Replies 7 ·
Direction of magnetic field experienced by wire
- Cicicicici
- · Replies 3 ·
Resolution of vectors for problems related to mechanics
- ubergewehr273
- · Replies 16 ·
How Do You Balance Objects on a Uniform Board to Maintain Equilibrium?
- srekai
- · Replies 1 ·
Isolating Variable in Equation for conservation of momentum
- jxj
- · Replies 16 ·
Electric field of sphere with charge density ρ = Ar²
- Dgeld
- · Replies 7 ·
Solve Uncertainty in "An Introduction to Error Analysis" by John R Taylor
- NicolaiTheDane
- · Replies 2 ·
How Is Cp - Cv Calculated for an Ideal Monatomic Gas Using Thermodynamics?
- subzero0137
- · Replies 3 ·
Problem in calculating work done?
- navneet9431
- · Replies 3 ·
Average Vector Acceleration Along a Curve and a Straight Section
- srekai
- · Replies 4 ·
How long does it take a 1ms pulse of light to travel 20m
- KezPhysics
- · Replies 11 ·
Banking angle for 200m curve at 90 km/h with no friction
- Beth N
- · Replies 15 ·
Finding the mass of a photon with given wavelength
- Physics53
- · Replies 5 ·
Vertical rod with disc rotating 90 degrees to horizontal
- Exath
- · Replies 9 ·
Find the tangent plane given at the stationary point.
- Jozefina Gramatikova
- · Replies 4 ·
Normal force on pilot at bottom of vertical loop
- Beth N
- · Replies 7 ·
How Much Force Does a Jammed Aluminium Ingot Exert When Heated?
- AutumnBeds
- · Replies 4 ·
Calculate the efficiency of a furnace’s heat transfer process
- Gregs6799
- · Replies 9 ·
How does force change with spring constant and displacement in Hooke's law?
- jxj
- · Replies 17 ·
Vector calculus- region-density-mass
- Jozefina Gramatikova
- · Replies 4 ·
Calculation of work done by a variable force
- navneet9431
- · Replies 8 ·
Potential difference across capacitors
- Krushnaraj Pandya
- · Replies 3 ·
Fractional uncertainty of g on the surface of the Sun
- Jozefina Gramatikova
- · Replies 5 ·
Combining springs to match Force vs Extension Graph
- srekai
- · Replies 2 ·
Equilibrium of Rigid Bodies. Rafter. What is moment arm?
- Beth N
- · Replies 1 ·
What are ΔU, w and q when ice melts to water at 0°C?
- songoku
- · Replies 6 ·
Bernoulli Equation and gauge pressure
- Zahid Iftikhar
- · Replies 5 ·
Calculating Quantum Defect for Na I 3p-nd, n=4-7 Terms
- Philip Land
- · Replies 3 ·
An inflated tyre suddenly bursts -- What is the temperature of the air?
- alijan kk
- · Replies 9 ·
Balancing a shaft using mrL and mr vectors
- ridiculoid
- · Replies 1 ·
In the horizontal direction, what is the initial velocity of the projectile?
- lolseeker2
- · Replies 1 ·
Newton's law and double stars moving in circles
- Felipe Lincoln
- · Replies 15 ·
Why does 1 degree Fahrenheit temperature change equal 1 degree Celsius?
- alijan kk
- · Replies 14 ·
Simple harmonic motion of charged particles
- Alexthekid
- · Replies 3 ·
What Calculations Determine the Volleyball's Trajectory in Projectile Motion?
- lolseeker2
- · Replies 33 ·
Which forces am I missing in the FBDs?
- JessicaHelena
- · Replies 9 ·
What did Einstein mean by 'the world is comprehensible'?
- Sitakalyani
- · Replies 5 ·
Ratio of Inductance between 2 Solenoids?
- David Day
- · Replies 3 ·
Potetial Difference between center and point r
- lordlarddallas
- · Replies 1 ·
What Is the Direction of Force on a Dielectric Slab in a Capacitor?
- Krushnaraj Pandya
- · Replies 10 ·
Capacitor problem with a beam balance -- balancing after changing the charge
- Victim
- · Replies 3 ·
Finding charge on three capacitors with two batteries
- Krushnaraj Pandya
- · Replies 15 ·
Changes in capacitor after dielectric inserted
- Krushnaraj Pandya
- · Replies 17 ·
What will be the final voltage across the 2 micro-farad capacitor?
- Krushnaraj Pandya
- · Replies 26 ·
Friction force on 8 kg body sliding down 30° incline
- PhysicsIsKillingMe
- · Replies 3 ·
What is the solution to the circular duct problem?
- Joon
- · Replies 3 ·
Calculation about virtual image
- barryj
- · Replies 2 ·
In the circular motion below, what will be the velocity?
- HCverma
- · Replies 14 ·
Replacing speed with friction in formula
- Bob22314
- · Replies 9 ·
Solving Force and Motion: Pulling 25.0 kg Sled 25m
- TaylorHoward21
- · Replies 5 ·
Projectile striking moving truck: finding collision time
- Beth N
- · Replies 15 ·
Difference between Vav and Vrms
- Timothy Teo
- · Replies 7 ·
Braking distance calculation for race car with constant deceleration
- TaylorHoward21
- · Replies 3 ·
Finding the acceleration of the center of mass
- salah22441
- · Replies 2 ·
Kleppner 7.33: angular momentum in rotating cone with sliding block
- MARX
- · Replies 12 ·