Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Finding displacement current in an AC capacitor circuit
- Peter Andrews
- · Replies 7 ·
Spring block system on inclined plane
- randomgamernerd
- · Replies 17 ·
What is the equivalent capacitance between points A & B?
- Kronos
- · Replies 5 ·
Hole though the Earth and SHM: why is uniform density assumed?
- Vitani11
- · Replies 7 ·
Perfect Inelastic collision with string tension
- erm151
- · Replies 4 ·
Field of an infinite plane sheet of charge
- fishturtle1
- · Replies 3 ·
Finding Imax and when capacitor and inductor energies are equal in LC circuit
- clamatoman
- · Replies 28 ·
Intrinsic semiconductor, carrier concentration
- Incand
- · Replies 2 ·
Calculate Max Lever Length for Toppling Block
- Saints-94
- · Replies 9 ·
Forces and torques on a prism suspended by string and touching ground
- yanshu liang
- · Replies 4 ·
SHM Amplitude vs. Frequency graph
- Taniaz
- · Replies 15 ·
Electric potential of a conical surface
- davon806
- · Replies 3 ·
Graph filter response at 0 Hz, sr/4, and Nyquist frequency
- MYMLA
- · Replies 11 ·
Time measured by a car-Special relativity
- Paulo Figueiredo
- · Replies 37 ·
Cylinder rod charge density (Gauss Law)
- Arman777
- · Replies 14 ·
Thermal energy problem: Gas expansion in cylinder
- Bonapartist
- · Replies 3 ·
Calorimetry: Finding mass of ice, water, steam left
- paulie
- · Replies 1 ·
Electric field to turn electron 90 degrees in capacitor
- danielhep
- · Replies 3 ·
Force of a 1000kg car hitting a steel wall at 20 m/s over 0.5 seconds
- Sarah
- · Replies 38 ·
Polarity Reversal: Why Is Voltage of Right Source Negative?
- MeneerM
- · Replies 5 ·
Uniform Slab-Finding Electric Field Using Gauss Law
- Arman777
- · Replies 9 ·
Why does the spinning of wheels move a car?
- hndalama
- · Replies 1 ·
Finding angle between repelling point charges on threads
- danielhep
- · Replies 8 ·
Relativistic Momentum of photon
- Blue Kangaroo
- · Replies 6 ·
Coefficient of Restitution problem
- CCC1212
- · Replies 10 ·
What is the Young's Modulus of Aluminum, Steel, and Brass?
- Edward Trail
- · Replies 14 ·
Moment of inertia for this assembly
- Elias Waranoi
- · Replies 2 ·
Rising of a hoop given the falling of beads
- Mr Davis 97
- · Replies 15 ·
How Does Earth's Core Contribute to Surface Heat Compared to Solar Radiation?
- toothpaste666
- · Replies 2 ·
Finding the scattering cross section
- Muthumanimaran
- · Replies 2 ·
Coulomb's Law and point charges
- absolutezer0es
- · Replies 7 ·
Calculating Frictional Force on a Roller Coaster: Solving for Final Velocity
- Claire
- · Replies 4 ·
How can I show that the bulk modulus is about r^-4?
- joemmonster
- · Replies 1 ·
Alternating RLC circuit with an additional capacitor
- solour
- · Replies 6 ·
How did my friend get this "Theoretical Velocity" ?
- AlexisFair
- · Replies 6 ·
Double slit experiment with a glass-covered slit of unknown n
- Nerrad
- · Replies 3 ·
Does refraction only happen wih light rays?
- StrawberryElf
- · Replies 4 ·
Calculating Electric Field Strength and Direction for a Negative Charge
- dragon-kazooie
- · Replies 4 ·
What Resistor Value Discharges a Capacitor 99% in 5 Seconds?
- Kajan thana
- · Replies 1 ·
Motion of Charged Particles in Field Uniform B-field E=0
- Eri ep
- · Replies 1 ·
Current of RC Circuit After Switch is Opened
- Math-U-Up
- · Replies 3 ·
Finding the angular frequency of an object
- t.kirschner99
- · Replies 3 ·
What is the electrical potential at point P?
- ikihi
- · Replies 6 ·
How to find the optimum angle for takeoff for ski jump using
- canycorns44
- · Replies 3 ·
What is the Angular Speed of a Rotating Object with Varying Inertia?
- Jax24
- · Replies 3 ·
Gravity between you and your computer monitor
- aatari
- · Replies 1 ·
What is the value of I3 for the given line integral and values of I2 and B?
- PolarBee
- · Replies 5 ·
Non-Complex Capacitor Potential Difference question
- Tyler R
- · Replies 9 ·
Finding temperature for thermal expansion of ring and sphere
- paulie
- · Replies 5 ·
Russell Traction Apparatus: Find W & Traction Force
- Melissa Reyes
- · Replies 1 ·
Magnitude of charge with common Transparent tape
- FirstLanguageMath
- · Replies 18 ·
Intensity of light passing through 3 polarizers
- ilovejava
- · Replies 3 ·
Energy of neutron in fission reaction
- Magnetic Boy
- · Replies 15 ·
What forces are acting on the rotating mass and platform in this experiment?
- doggydan42
- · Replies 2 ·
Rotational motion down an incline (ring/hoop)
- floraha
- · Replies 3 ·
Sliding blocks and a string problem
- Anatalbo
- · Replies 1 ·
Normal forces for small car performing a vertical loop
- Anatalbo
- · Replies 4 ·
Pendulum velocity using energy forumula
- Garrit
- · Replies 4 ·
Calculating Sound Intensity and Pressure Variation at a Distance
- Ian Baughman
- · Replies 4 ·
Relations between torque for system of pulleys
- BeeKay
- · Replies 1 ·
A mass is free to move on a horizontal frictionless surface
- physicsdude101
- · Replies 10 ·
Centre of gravity, centre of buoyancy (image)
- Poetria
- · Replies 2 ·
How Do You Solve a Double Atwood Machine Problem with Unequal Masses?
- dsfrankl
- · Replies 1 ·
Is the Young's Modulus Equation Homogeneous?
- Frozenblaze1
- · Replies 7 ·
How can we improve the performance of our mousetrap racecar?
- Cheesycheese213
- · Replies 1 ·
Problem about measurement and probability of energy
- BREAD
- · Replies 1 ·
Spring energy, work, and block speed with no friction
- Alex126
- · Replies 10 ·
A pulley of mass m using conservation of energy
- physicsdude101
- · Replies 13 ·
How to solve a simple elastic collision problem?
- Eclair_de_XII
- · Replies 8 ·
Conservation of momentum - Vertical spring
- danielbaker453
- · Replies 24 ·
Finding magnitude and direction of an electric field
- fishturtle1
- · Replies 1 ·
Archived Calculating momentum for a marble shooter experiment
- Illumination
- · Replies 2 ·
Archived Atwood Machine, I determining position of the masses.
- chickenman444
- · Replies 7 ·
RMS current from I=(1.35A)cos(300t)
- clamatoman
- · Replies 6 ·
Angular momentum for a shrunken Earth
- hndalama
- · Replies 11 ·
Volume of water required to cool thermal/nuclear plants?
- kokodile
- · Replies 3 ·
A bead rests at the top of a fixed, frictionless hoop.
- physicsdude101
- · Replies 44 ·
Proton trajectory grazing a charged sphere
- timetraveller123
- · Replies 8 ·
Prove that the period of a SHM is 2pi*sqrt(m/k)
- ItsTheSebbe
- · Replies 3 ·
Is my solution for Kirchoff's Rules Problem correct?
- Kant Destroyer
- · Replies 2 ·
Block on Spring SHM, Finding angular frequency
- SadDan
- · Replies 3 ·
How Does the Angle Affect the Height and Speed of a Toy Car on a Track?
- Supremetheking
- · Replies 2 ·
Velocity Charged Particle between Parallel Plates
- ItsTheSebbe
- · Replies 6 ·
Calculating the heat released in one part of an electrical network?
- Amar
- · Replies 3 ·
Action-Reaction Force for external forces
- Aryan Andaleeb
- · Replies 15 ·
The relationship of the current before and after a change.
- Asmaa Mohammad
- · Replies 16 ·
Voltage, current, potential and force in circuits
- Barclay
- · Replies 5 ·
Newton's Second Law: Car and Rock Problem
- aatari
- · Replies 4 ·
A particle of mass m is initially at rest
- Calpalned
- · Replies 9 ·
Question regarding finding mass given a weight and gravity
- edgarpokemon
- · Replies 7 ·
Force of a block on an incline above a horizontal
- TheFlemster
- · Replies 10 ·
Change of Variables Legendre's Equation
- Crush1986
- · Replies 5 ·
Determine the angular momentum in polar coordinates
- welssen
- · Replies 4 ·
Finding spring stiffness for 100 g mass with 10 Hz period
- Torrie
- · Replies 10 ·
Frequency of the second harmonic mode of a string
- Torrie
- · Replies 3 ·
Magnetic Flux Through a Square Loop
- ilovejava
- · Replies 5 ·
Equation to calculate absorbed dose of radiation?
- Littlegirloud
- · Replies 3 ·
Why is bulb A brightest when B and C are in series?
- ikihi
- · Replies 3 ·
Kinetic energy of plate tectonics problem
- hndalama
- · Replies 3 ·
How much stored energy do the plates have?
- ikihi
- · Replies 1 ·