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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Writing the harmonic oscillation equation from energy, force, period and phase
- MisterP
- · Replies 6 ·
Explain friction in a pulley system
- KatrineRav
- · Replies 13 ·
Work done lifting and sliding a box with friction
- MisterP
- · Replies 4 ·
Voltage, electric field and potential energy for concentric shells
- tinesi
- · Replies 3 ·
Calculate Temperature of Nitrogen Gas at 2 atm Pressure
- MisterP
- · Replies 7 ·
What is the work done on cart by the string?
- Akewal
- · Replies 1 ·
Motion of a system that has two masses and three pulleys
- Mert Kerem Yavuz
- · Replies 11 ·
Relationship between Excess Pressure and Surface Tension for a Drop on a Fibre
- Raihan amin
- · Replies 5 ·
Motion of masses connected by a string over a pulley
- songoku
- · Replies 31 ·
What are the uncertainty values for my corrected magnitudes?
- Thomas Smith
- · Replies 2 ·
Why does dot product equal magnitude times projection?
- Pochen Liu
- · Replies 1 ·
Load resistance in voltage regulator
- archaic
- · Replies 3 ·
Calculating Work for Launching a Spacecraft to a Great Distance from Earth
- solarcat
- · Replies 3 ·
Advice on calculating the determinant for 3x3 Matrix by inspection
- SubZer0
- · Replies 2 ·
A question regarding energy and momentum conservation
- jehwig0107
- · Replies 9 ·
Correct statement about perfectly elastic collision
- songoku
- · Replies 15 ·
Find the Velocity given Magnetic field and Magnetic Force
- MedEx
- · Replies 9 ·
Rolling Marble + Air resistance = Displacement?
- Jonathan1218
- · Replies 24 ·
Energy needed to penetrate each object
- PhysicS FAN
- · Replies 10 ·
Image charge method for potential between two conductors
- Othman0111
- · Replies 3 ·
Finding the current and voltage for each resistor
- prescripted
- · Replies 5 ·
Describe the position of a pulley attached to a sling
- Jeroen Staps
- · Replies 57 ·
How proportional action is produced in a pneumatic controller
- David Deal
- · Replies 5 ·
Retarded time calculations: Electrodynamics
- WWCY
- · Replies 2 ·
How many crates can you load in a minute with different average power outputs?
- grooveactiva
- · Replies 1 ·
Finding the tension in the thread
- JKhim
- · Replies 7 ·
What is the magnitude of the average force?
- JeSs_W
- · Replies 2 ·
Does the angle of the slope matter in these cases? Why/not?
- grooveactiva
- · Replies 4 ·
A fluid mechanics problem -- Shape of a falling water drop
- LordGfcd
- · Replies 8 ·
Find the magnetic field given I, t, Hall EMF, and G_s
- lumealume
- · Replies 1 ·
Deriving full width at half maximum formula for electron diffusion
- CptXray
- · Replies 1 ·
Projectile motion -- Maximum range it can travel inside a 2m tunnel
- rashida564
- · Replies 4 ·
Conceptual check: Newton's third law
- Callista
- · Replies 1 ·
Baseball thrown up from 1.1 m reaching 12 m: why two methods give different times
- grooveactiva
- · Replies 5 ·
Three particles chasing each other in an equilateral triangle
- Raghav Agarwal
- · Replies 24 ·
Why doesn't Newtons third law also apply to the frame?
- Callista
- · Replies 2 ·
How does back-emf in an inductor lead to the exponential charging curve?
- Master1022
- · Replies 5 ·
Things to talk about in a Polarization Write-up
- authoriseddiplidocus
- · Replies 1 ·
Why does substituting T back into the acceleration equation give a2=a2?
- Callista
- · Replies 3 ·
Why Can't I Solve for a2 Instead of a1 in Connected Objects Problem?
- CVRIV
- · Replies 5 ·
How do I determine the uncertainty value of the star's absolute magnitude?
- Thomas Smith
- · Replies 6 ·
Finding the POSITION of the center of mass
- jigsaw21
- · Replies 2 ·
Charge induced on parallel plates if a charge between plates
- Rakesh Kumar Jaiswal
- · Replies 7 ·
Capacitance vs. Inverse Distance Graph's Slope
- Ayda
- · Replies 2 ·
Find the Moment about the ankle
- jweica
- · Replies 4 ·
Finding the Current in a Resistor in a Closed Circuit
- MedEx
- · Replies 4 ·
Capacitor in parallel with resistor at steady state
- Jonah765
- · Replies 2 ·
I need to calculate the equivalent resistance
- SaiTatter
- · Replies 4 ·
Calculate the radius of this rotating wheel
- MisterP
- · Replies 9 ·
Kinetic energy and velocity of electron after compton scatte
- DeathByKugelBlitz
- · Replies 1 ·
Why does clay sticking to a rotating disk not change its angular momentum?
- dangerboyy
- · Replies 25 ·
How can I calculate the number of photons with this data?
- HazyMan
- · Replies 7 ·
Calculating Pump Power for Well Water Removal
- Akash47
- · Replies 5 ·
How Long Does It Take for a Boomerang to Return?
- caters
- · Replies 5 ·
Bungee jumping and Conservation of energy
- solarcat
- · Replies 3 ·
Why does a frictionless stick let you neglect the y-component of momentum?
- Abhishek11235
- · Replies 15 ·
Interference fringe pattern on a thin cut cylinder slice
- Anurag98
- · Replies 1 ·
Work Done by Gravity and Tension in a Pulley System
- solarcat
- · Replies 3 ·
How to measure the magnification of a microscope in the lab
- JulioHC
- · Replies 12 ·
Mesh Analysis Method for Finding Current in a Circuit with Dependent Source
- Zack K
- · Replies 5 ·
How Do You Solve This Capacitor Problem with Aluminum Electrodes?
- RED119
- · Replies 1 ·
Refractive Index: Speed of Light in Medium vs Vacuum
- Sarrah
- · Replies 2 ·
Magnetic Field required to hold a loop in static equilibrium
- mmest
- · Replies 5 ·
Finding tensions in cables at angles
- Callista
- · Replies 3 ·
How Does Pressure Vary in an Open Tube?
- Kara4566
- · Replies 1 ·
How Does Coil Configuration Affect Solenoid Inductance?
- Rayanna
- · Replies 8 ·
Problem involving energy/motion
- Curtiss Oakley
- · Replies 19 ·
Altitude - Why is it a Scalar?
- ELLE_AW
- · Replies 3 ·
What angles produce a net torque of 1250 Nm on an angled arm?
- draupe
- · Replies 2 ·
Uncertainty when converting inches to meters using a tape measure
- ELLE_AW
- · Replies 3 ·
How to find distance between 2 charges, with no force given?
- Blooper
- · Replies 2 ·
Initial velocity for soccer ball through two holes in walls
- CalebRJ01
- · Replies 2 ·
Calculate Linear Acceleration of 0.5kg Mass Suspended from Flywheel
- kelvin scott
- · Replies 7 ·
How to Derive the Coefficient of Friction from Time and Acceleration?
- Mille89
- · Replies 5 ·
Area under a frequency vs wavelength graph?
- JosephTraverso2
- · Replies 9 ·
How Does Satellite Mass Impact Velocity Change for Circular Orbit Achievement?
- RiotRick
- · Replies 5 ·
Question regarding supernovae shock breakout
- Physics Dad
- · Replies 1 ·
AP Physics 1 collision with inelastic then elastic collision
- Zulu2018
- · Replies 10 ·
Calculating Speed on an Incline Using the Law of Conservation of Energy
- rob stevenson
- · Replies 5 ·
Using Integrals to Calculate the Rotational Energy of Earth
- matai
- · Replies 6 ·
Do I exert a force on the moon?
- KingAlexander211B
- · Replies 2 ·
How Does Heat Affect the Motion of a DIY Stirling Engine's Wheel?
- Isolde Wilde
- · Replies 6 ·
Non-inertial reference frame problem with condition 4
- Singalo
- · Replies 2 ·
Boat with Friction: CoM / Minimum Time Problem
- quark002
- · Replies 1 ·
Radius of curvature of the trajectory of points A and B
- Davidllerenav
- · Replies 81 ·
Potential across a conducting sphere surrounded by an insulator
- arturo
- · Replies 7 ·
Why is induced EMF zero outside a solenoid?
- cuallito
- · Replies 5 ·
Solve simple nonlinear equations in the form [A]x=b
- matthewjames812
- · Replies 1 ·
When current flow reach indeterminate form
- rajeshmarndi
- · Replies 3 ·
Calculating Forces on a Motorcycle Riding in a Transparent Sphere
- solarcat
- · Replies 5 ·
Where can you not see a satellite
- solarcat
- · Replies 4 ·
What happens to a light photon when it hits glass?
- askbbj
- · Replies 9 ·
How to Determine the Work Done by the Rope on a Sledge?
- Romain Nzebele
- · Replies 5 ·
Free body diagram of a compressed board between two boards
- Romain Nzebele
- · Replies 7 ·
Combining Multiple Rules for Error Propagation
- ELLE_AW
- · Replies 3 ·
Ohmmeter question -- Measuring a 2-resistor circuit
- Kenny555
- · Replies 2 ·
Equilibrium problem with 5 unknowns
- SubZer0
- · Replies 4 ·
How Do You Derive the Constraint Equation for a Disc Rolling Along a Parabola?
- QuantumDuality
- · Replies 2 ·
Why can't Baron Münchhausen pull himself out of a swamp by his hair?
- Davidllerenav
- · Replies 10 ·
Potential Energy of a Finite Proton
- Interdimensional
- · Replies 1 ·