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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Which light turned on first and how much later did the second one turn on?
- ChrisJ
- · Replies 1 ·
Thin film constructive interference
- ikihi
- · Replies 3 ·
Time to Max Compression of a Spring
- kq6up
- · Replies 2 ·
Tip current in STM (fractional error problem)
- Ziggy12
- · Replies 4 ·
Expression for the instantaneous angular velocity
- Rahulrj
- · Replies 10 ·
Change of internal energy of an ideal gas
- DevonZA
- · Replies 5 ·
Ice cube melting in warm water temperature change
- zanyzoya
- · Replies 7 ·
Uncertainty of the function? My answer is a bit different
- giantf
- · Replies 1 ·
Calculating Momentum in an Observer's Frame of Reference
- Curtis Cleary
- · Replies 1 ·
Current division in a series-parallel circuit
- Ketchup4684
- · Replies 2 ·
Why Is Magnetic Flux Calculated Using the Solenoid's Area Instead of the Loop's?
- pbj_sweg
- · Replies 3 ·
Why Does Unpolarized Light Lose Half Its Intensity Through a Polaroid?
- superslow991
- · Replies 4 ·
How Does Charge Distribution Affect Electrostatic Field Dependence?
- ShaddollDa9u
- · Replies 1 ·
Maximum angular velocity of disc skidding across surface
- rickyjoepr
- · Replies 1 ·
Finding the average magnitude of the drag force
- rickyjoepr
- · Replies 2 ·
What is the electric field above a uniformly charged plane?
- leslieharvey24
- · Replies 1 ·
How Does LIGO Detect Gravitational Waves Using Laser Interferometry?
- EGN123
- · Replies 4 ·
Why the answer in book does not match the clue given
- Buffu
- · Replies 2 ·
Electromagnetism –revising with past exam papers
- The black vegetable
- · Replies 4 ·
Projectile motion with baseball
- ConfusedMonkey
- · Replies 2 ·
The efficiency of a transformer
- Asmaa Mohammad
- · Replies 5 ·
Equation Rearrangement problem(I think)
- ZenMode
- · Replies 8 ·
Archived Optimal angle for one-bounce baseball throw to match 45° throw
- TN17
- · Replies 1 ·
Ray diagram diverging lens both object and image virtual
- crick
- · Replies 2 ·
Find capacitance and charge of two aluminum electrodes
- David23454
- · Replies 2 ·
Finding absolute uncertainty in 1/d²
- Taniaz
- · Replies 21 ·
Checking answer to stacking problem
- timetraveller123
- · Replies 9 ·
Asteroid close encounter: speed at perigee
- rickyjoepr
- · Replies 4 ·
Electric field in a cavity in a spherical charge density
- Ruby_338
- · Replies 2 ·
Calculate work done on charged object between plates
- EM da Costa
- · Replies 1 ·
Electric force calculate the separation
- Young wolf
- · Replies 3 ·
Using Snell's Law for Brachistochrone Project
- zengodspeed
- · Replies 11 ·
Does Charge Flow Differ in Simple Circuits with Ideal vs. Real-World Batteries?
- IntegralDerivative
- · Replies 14 ·
Potential ratio at cube center and corner from uniform charge distribution
- Buffu
- · Replies 15 ·
Magnetic flux- is this the correct way to solve it?
- t123123
- · Replies 3 ·
Two balls colliding in mid-air with initial height h₀
- ConfusedMonkey
- · Replies 9 ·
Kinematics question, easier way to do this?
- Nathan phisi
- · Replies 6 ·
AC, 2 appliances in parallel, one of them is disconnected
- Moon_tm
- · Replies 3 ·
Potential of thin ring of charge
- Buffu
- · Replies 11 ·
Find electric potential due to charge distribution
- David23454
- · Replies 1 ·
Potential energy in a mouse trap
- Eirik
- · Replies 7 ·
A spring-mass system in circular motion
- Aslet
- · Replies 28 ·
Resistance of an oscillating system
- TheBigDig
- · Replies 12 ·
How do I work out units of velocity from light years?
- chloeid
- · Replies 6 ·
The frequency of two parallel springs and one weight system
- ltnghia1304
- · Replies 3 ·
Maximum current through a capacitor
- FelaKuti
- · Replies 1 ·
What Is the frequency of red light?
- Daniel Kh
- · Replies 5 ·
Finding Distance -- Hockey Puck Velocity
- Catchingupquickly
- · Replies 6 ·
Book demonstration about trigonometric relations
- Bunny-chan
- · Replies 3 ·
What Is the Electric Potential Due to a Line Charge Along Specific Points?
- Buffu
- · Replies 8 ·
Conservation of Energy -- Object around a loop
- PhysicsCollegeGirl
- · Replies 10 ·
How Is Charge Calculated on Capacitor C2?
- ShaddollDa9u
- · Replies 8 ·
Distance of projectile - only speed given
- SpiraRoam
- · Replies 4 ·
Throttling Calorimeter water equivalent
- aldo sebastian
- · Replies 1 ·
Visualizing the Motion of Coins on a Rotating Scale
- Rahulrj
- · Replies 38 ·
Partition function for ideal gas for "medium" temperature
- rockyleg
- · Replies 1 ·
Simple Harmonic Motion of a Spring?
- EthanVandals
- · Replies 11 ·
Solving Plane Pressure Problem: Finding the Line of Action
- Phys5
- · Replies 4 ·
Paradox in calculating potential of a sphere
- Buffu
- · Replies 18 ·
Understanding a book example about centripetal force
- Bunny-chan
- · Replies 6 ·
Potential difference across capacitor
- ShaddollDa9u
- · Replies 5 ·
Moon's potential energy, kinetic energy, escape velocity and period
- EthanVandals
- · Replies 7 ·
Spring mass system attached to a disc
- rafaamcarvalho
- · Replies 5 ·
Cathode ray tube, Voltage needed to move the beam impact spot
- Opo
- · Replies 3 ·
Uniform Circular Motion, Acceleration problem
- No1_129848
- · Replies 5 ·
Equation of motion of a dampened pendulum
- Physics Dad
- · Replies 3 ·
What is the 40µF capacitor doing in this circuit?
- superslow991
- · Replies 22 ·
Velocity of a Cart accelerated by a Jet stream
- Will1119
- · Replies 10 ·
Gravitation force of a disk with a hole
- toony12362
- · Replies 6 ·
Work to lift a 10 m chain with linear mass density 0.8 kg/m
- yecko
- · Replies 13 ·
Research project on heat transfer
- chrismdn
- · Replies 2 ·
Forces on a Car in a Vertical Loop
- Saracen Rue
- · Replies 6 ·
Should I Use the Total Length of an Object to Calculate Buoyancy?
- WherE mE weeD
- · Replies 10 ·
Calculating the equations of motion for particle in parabola
- Heatherfield
- · Replies 2 ·
Action-Reaction Forces on an Elevator
- Catchingupquickly
- · Replies 5 ·
Current in a capacitor question
- maxelcat
- · Replies 6 ·
Find V(o) / V(s) in Output Opamp Voltage
- Abdulwahab Hajar
- · Replies 3 ·
10 kg mass on spring with k=2500 N/m: equilibrium, frequency, and motion
- Feodalherren
- · Replies 8 ·
What is the Work Done by a Gas in a Cycle?
- knc
- · Replies 24 ·
What is the surface charge density on the face of the penny?
- Mason Smith
- · Replies 2 ·
What is the initial voltage of the capacitor in this circuit?
- Abdulwahab Hajar
- · Replies 3 ·
Understanding Digital-to-Analogue Conversion in Signal Processing
- Taniaz
- · Replies 4 ·
Converging lens solve for all variables given f, Hi, and Ho
- Samr28
- · Replies 3 ·
Normal force in a curvilnear motion
- EastWindBreaks
- · Replies 12 ·
What % of PEg must be converted in KE in order to double v?
- ness8
- · Replies 13 ·
Torque around a point from lever linkage
- BatsDude
- · Replies 7 ·
Finding Resultant Force Using Cosine and Sine Law
- Catchingupquickly
- · Replies 2 ·
Conceptual Question-Capacitance
- PlatoDescartes
- · Replies 4 ·
Heat transfer in series and parallel
- knc
- · Replies 11 ·
Measuring 'g' and systematic errors
- Jimmy87
- · Replies 11 ·
Displacement Function of an Idealized Circular Loop Coaster
- StudentOfScience
- · Replies 21 ·
Rolling without slipping, theory
- HaoPhysics
- · Replies 11 ·
Spring force and displacement relationship problem
- fireman2020
- · Replies 4 ·
The phase difference between current and voltage.
- Asmaa Mohammad
- · Replies 30 ·
How Does the Rotational Inertia Affect Rolling Motion on an Inclined Plane?
- ILOVEPHYSIC
- · Replies 3 ·
How Do You Calculate Work in a Thermodynamic Cycle with Constant Temperature?
- grandpa2390
- · Replies 15 ·
How did my professor get this integral
- grandpa2390
- · Replies 6 ·
Magnetic moment and Minimum energy
- Arman777
- · Replies 8 ·
Calculating the Depth of a Cylinder Using Refraction
- Const@ntine
- · Replies 7 ·
Why Do Certain Answers Apply in Basic Electric Field Questions?
- DivideBy0
- · Replies 1 ·