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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Input impedance of a "Ladder" transmission line
- Marcus95
- · Replies 3 ·
How Fast Does Spaceship A Move Relative to Spaceship B?
- Hamza Abbasi
- · Replies 19 ·
In which direction does the current flow?
- bolzano95
- · Replies 5 ·
Electromagnet -- changing flux and a ring
- Jahnavi
- · Replies 3 ·
Finding the Mistake in Calculating Charge on a Capacitor with a Shorted Wire
- Jahnavi
- · Replies 5 ·
How does unbalanced tension affect the motion of a rope?
- Alex126
- · Replies 9 ·
Uncertainty in average time from 3 trials with 960 FPS video
- adityax26
- · Replies 2 ·
What is the acceleration of the coin after being dropped?
- Lesegp
- · Replies 4 ·
Self-inductance and resistance of two solenoids with different lengths
- Jahnavi
- · Replies 13 ·
Displacement given the acceleration
- Guillem_dlc
- · Replies 8 ·
Calculate the characteristics of this compression spring
- bravopipo
- · Replies 3 ·
What is the maximum attainable speed for the car?
- Perseverence
- · Replies 4 ·
Derivation process? (Heatsink Fin Heat Conduction Equations)
- EastWindBreaks
- · Replies 3 ·
Problem with line integrals for electric potential
- WWCY
- · Replies 6 ·
What happens to the capacitance after increasing distance?
- eprparadox
- · Replies 2 ·
Finding change in internal energy for gas expansion at constant pressure
- Gusk
- · Replies 27 ·
Kinetic energy of an alpha particle
- Taylor_1989
- · Replies 2 ·
Calculating the frictional forces on a sliding box on a ramp
- Karagoz
- · Replies 2 ·
AC generator -- Understanding coil voltages as function of position
- EF17xx
- · Replies 1 ·
What Is the Specific Heat Ratio for a Helium and Nitrogen Gas Mix?
- mk9898
- · Replies 19 ·
Find the direction of a blob of clay after impact?
- isukatphysics69
- · Replies 6 ·
Diffraction Grating - Calculating Ruling Width
- Martin89
- · Replies 2 ·
Solving Squid Propulsion with Momentum Conservation Equation
- isukatphysics69
- · Replies 2 ·
How to linearise translated and dilated surd functions?
- Stanley_physics
- · Replies 11 ·
Normal force between ball and cone?
- isukatphysics69
- · Replies 6 ·
Finding displacement equation for 20 kg mass on spring with 15 cm initial stretch
- Suyash Singh
- · Replies 26 ·
Find height of ball rotating in cone without falling down?
- isukatphysics69
- · Replies 3 ·
How to find period of a SHM concerning a cube and spring?
- Ari
- · Replies 5 ·
Find the transient current in this circuit
- Helly123
- · Replies 31 ·
Four Bar Linkage Mechanism - Space Diargram
- AutumnBeds
- · Replies 2 ·
Electric flux through a 1.00 mm hole drilled in a 10.0 cm sphere
- Pratik007789
- · Replies 6 ·
Moment of inertia of a system of masses
- Pablo
- · Replies 10 ·
Determine the work done by the force due to gravity
- Perseverence
- · Replies 14 ·
Do the rail cars move on a 0.499% grade without brakes or external force?
- Dennis240
- · Replies 12 ·
Finding the electric field at point - Can someone check my work?
- emhelp100
- · Replies 3 ·
Pumping water upwards in a column
- cc94
- · Replies 8 ·
Using Pressure and Temperature differences to find height
- M_Abubakr
- · Replies 3 ·
Find the speed of a satellite at a distance R from Earth
- Helly123
- · Replies 39 ·
Thermal expansion of a copper pipe
- slaw155
- · Replies 8 ·
Deriving the Lens Maker formula of a plano-convex lens using Fermat's Principle
- Clara Chung
- · Replies 3 ·
Moment of inertia of a meter stick
- Pablo
- · Replies 9 ·
How high was the package above the ground when it was thrown
- Perseverence
- · Replies 4 ·
Maximum electric field from magnetic field
- Schfra
- · Replies 12 ·
Heat and work when temperature increases by 1 degree
- Helly123
- · Replies 21 ·
Perturbation of a Magnetic Field
- Taylor_1989
- · Replies 2 ·
Direction of electromagnetic field
- palkia
- · Replies 7 ·
How Do You Calculate Proton Beam Energy in a Lab Frame?
- FilipLand
- · Replies 7 ·
What happened to the negative sign?
- EastWindBreaks
- · Replies 2 ·
Torque lost using Newton's law of viscosity
- felipe de carli
- · Replies 2 ·
Magnitude of the total momentum of both blocks
- isukatphysics69
- · Replies 3 ·
Circular motion - ball in a loop
- Pochen Liu
- · Replies 19 ·
Why Was the Acceleration Positive in Circular Motion?
- isukatphysics69
- · Replies 2 ·
Football trajectory: find y(x) formula and angle for maximum height
- bornofflame
- · Replies 22 ·
Ball suspended by a pulley: oscillation
- inv4lid
- · Replies 2 ·
Maximum amount of energy the neutron can lose
- Sudikshya Pant
- · Replies 4 ·
Calculating Motion of a Test Balloon on a Methane Planet
- robax25
- · Replies 62 ·
Why Is Energy Conservation Not Valid in Moving Frames?
- Jahnavi
- · Replies 1 ·
Possible error in Marion and Thornton's Classical Dynamics?
- Elvis 123456789
- · Replies 1 ·
Impulse and momentum problem pool balls
- isukatphysics69
- · Replies 1 ·
Bent rod rotating in a magnetic field
- Jahnavi
- · Replies 10 ·
Direction of impulse when object rebounds from surface
- isukatphysics69
- · Replies 3 ·
Must we always use absolute value for lens magnification?
- Jonforall
- · Replies 4 ·
Finding the gas based off of mass
- mk9898
- · Replies 33 ·
Finding torque vector and magnitude from a force applied to a rotating object
- Pinon1977
- · Replies 3 ·
Charged particle motion in a magnetic feild
- Send BoBs
- · Replies 8 ·
Resultant force of spring at the instant of release?
- Poptarts
- · Replies 5 ·
Frequency at which no destructive interference occurs
- prodo123
- · Replies 7 ·
Uniform rod pivoting and block/mass energy problem
- Alcatrez
- · Replies 2 ·
How many images of a fish does a bird see above water?
- harambe
- · Replies 1 ·
Images from glass slab with spherical and plane surfaces
- Hydrous Caperilla
- · Replies 3 ·
Laser safety / measuring errors question
- chef99
- · Replies 7 ·
Which Point Has a 0 Reference Potential in a Circuit with Two Capacitors?
- Jahnavi
- · Replies 15 ·
Calculating accelerations in Induced Electric Fields
- Ignitia
- · Replies 3 ·
Resistance, current and current density
- Schfra
- · Replies 8 ·
How Do You Solve a 2D Elastic Collision Problem with Angle Relationships?
- chadarebubble
- · Replies 5 ·
How Do You Calculate Power from Torque and Angular Velocity?
- Pablo
- · Replies 3 ·
Find B and H everywhere for a magnetized infinite cylinder
- Potatochip911
- · Replies 8 ·
Finding the torque needed to accelerate a wheel
- Pablo
- · Replies 3 ·
How can I plot the electric field vs position for two charges?
- Jay_sangani14
- · Replies 4 ·
Electron in a Quantum State: Finding Eigenvectors and Eigenvalues
- Taylor_1989
- · Replies 4 ·
Where are these directions coming from? (Electric Field)
- emhelp100
- · Replies 7 ·
Time constant of an inductor coil
- Jahnavi
- · Replies 17 ·
Average Momentum: 1552.795 kg m/s
- mailmas
- · Replies 5 ·
Frequency of a wave at resonance
- Send BoBs
- · Replies 14 ·
When do we subtract gravity from rocket acceleration in kinematics?
- belledona
- · Replies 6 ·
Sound wave Interference from Two Speakers
- aatari
- · Replies 3 ·
EM wave entering a medium: finding relative permittivity ratio
- palkia
- · Replies 3 ·
Calculating the Feeding Rate of Supermassive Black Holes to Power Quasars
- amt2124
- · Replies 5 ·
Magnetic field in the gap of a tapered torus
- Alettix
- · Replies 9 ·
Maximum displacement when two waves with different amplitudes superpose
- Toon
- · Replies 3 ·
Position of the front of an asteroid using special relativity
- TheGreatCabbage
- · Replies 2 ·
When will the bolt pass the elevator floor?
- Wrangler_77
- · Replies 18 ·
Calculating Resistance of Coaxial Cable with Isolator
- bolzano95
- · Replies 5 ·
Emf in a circuit (multiple choice question)
- EF17xx
- · Replies 10 ·
What Is the Coefficient of Kinetic Friction Between the Ramp and the Crate?
- physicsquestionboi
- · Replies 6 ·
Finding normal force in vertical circular motion
- isukatphysics69
- · Replies 5 ·
Calculating EMF and Load Resistance for a Motor
- LuigiAM
- · Replies 11 ·
Is There a Displacement Current in a Wire with Increasing Current?
- Jamie_Pi
- · Replies 6 ·
Finding the Magnetic Field of a Point Charge Using Biot-Savart Law
- Tomi Kolawole
- · Replies 15 ·
Direction of magnetic field problem (Right Hand Rule)
- Tomi Kolawole
- · Replies 3 ·