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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Rotation: angular momentum and torque
- Avi Nandi
- · Replies 2 ·
Sound(Determine period, frequency from the plot)
- wislagrew
- · Replies 4 ·
Statics problem, analysis of a frame
- yaro99
- · Replies 10 ·
Kirchhoff's Rule Cap-monster maze
- Mastur
- · Replies 5 ·
Can the Slower Cyclist Win if the Race is Short Enough?
- judas_priest
- · Replies 10 ·
How does the floor contribute to the ball's energy during a bounce?
- Robertoalva
- · Replies 33 ·
Electric Field problem ( with integral)
- izelkay
- · Replies 4 ·
Frictional Torque of a Flywheel
- poortech
- · Replies 9 ·
Calculate number of nodes in stationary waves
- markus92
- · Replies 6 ·
Calculate the work done by tension
- physicslover14
- · Replies 48 ·
How High Does a Block Reach on an Inclined Plane?
- Chemistrystrng
- · Replies 19 ·
Is the Magnitude of an Electric Field Consistent Across All Spatial Locations?
- BadSkittles
- · Replies 3 ·
Getting sin θ = ±√3 instead of θ = 60°
- AakashPandita
- · Replies 6 ·
Car decelerating at 6.5 m/s² hits wall 25 m away
- wangwang2626
- · Replies 3 ·
Linear algebra.Kernel of a linear mapping
- manuel325
- · Replies 1 ·
Moment of Inertia through center of mass
- eprparadox
- · Replies 3 ·
How long will it take an electromagnetic wave to reach a satellite
- aChordate
- · Replies 4 ·
How Long Will It Take for the Car to Collide with the Truck?
- wangwang2626
- · Replies 3 ·
What Bandgap Energy Range is Required for Blue LEDs?
- aChordate
- · Replies 3 ·
Obtain transfer resistances and use them to find these two currents
- s3a
- · Replies 1 ·
Measurement uncertainty and error
- eroxore
- · Replies 25 ·
[Astrophysics] Star luminosity-radius-temperature problem
- Andrev
- · Replies 1 ·
Cutoff frequency in this circuit
- bznm
- · Replies 2 ·
Physics G.11 Question on Forces/Newton's Laws and Friction
- Michael Li
- · Replies 5 ·
Gravitation - Period of revolution of planet
- Saitama
- · Replies 10 ·
Discussion for Centre of Gravity of an irregular shaped object(Lamina)
- ilovephysics22
- · Replies 1 ·
How High Does a Cannonball Go When Fired Straight Up at 28m/s?
- mayhemlikeme
- · Replies 3 ·
Dipole antenna and electromagnetic waves
- aChordate
- · Replies 1 ·
Linear algebra-Basis of a linear map
- manuel325
- · Replies 4 ·
Derive the Electric Field Outside an Ideal Conductor
- ladyrx2020
- · Replies 2 ·
How long for 2 particles to collide due to gravity?
- thecommexokid
- · Replies 30 ·
How to find the Angular Velocity?
- Rococo
- · Replies 16 ·
Determining the Coefficient of Kinetic Friction on an Incline
- Polus
- · Replies 3 ·
Using the Ideal Gas temperature scale
- CAF123
- · Replies 29 ·
Difficult projectile motion question
- sorax123
- · Replies 8 ·
How Does Temperature Affect the Fit Between a Brass Ring and an Aluminum Rod?
- whitehorsey
- · Replies 1 ·
Friction force on a box and roller coaster speed at bottom of hill
- shin777
- · Replies 5 ·
Cylinders filled with liquid; placed on a trolley
- Saitama
- · Replies 24 ·
Why did the 1983 CGPM define c as 299,792,458 m/s instead of 3×10⁸ m/s?
- wifi
- · Replies 2 ·
Finding the frequency and wavelength of an electromagnetic wave
- aChordate
- · Replies 7 ·
How Can You Triple the Energy Stored in a Capacitor Circuit?
- sunflowerzz
- · Replies 6 ·
Why Does Battery Terminal Voltage Calculation Depend on Current Direction?
- sunflowerzz
- · Replies 4 ·
Calculating acceleration with slug and lbs
- tratata
- · Replies 8 ·
Finding range given impact velocity?
- jerm174
- · Replies 1 ·
Why is the relative velocity angle 315° in the car example?
- jwroblewski44
- · Replies 2 ·
Physics Question Over 2 Dimensional Friction Problems
- Xazerd
- · Replies 38 ·
Image velocity when water level and sphere both move toward concave mirror
- Saitama
- · Replies 14 ·
Pressure on manometer with different fluids
- lilMissMindset
- · Replies 15 ·
Solving for Spring Compression with a Vertical Spring and Hanging Block
- Anthonyphy2013
- · Replies 7 ·
Direct Collisions with objects moving in towards each other
- Woolyabyss
- · Replies 7 ·
Displacement derived from Acceleration
- tomtomtom1
- · Replies 5 ·
Is Work Done by an Ideal Gas Always Equal to P(Vf - Vi)?
- nil1996
- · Replies 3 ·
Finding cable force components given magnitude and direction angle
- rico22
- · Replies 6 ·
Find the coefficent of friction of one block
- Robertoalva
- · Replies 7 ·
Solving a Stationary Block on a Frictionless Wedge
- postfan
- · Replies 25 ·
Linear algebra- Inverse of a linear mapping
- manuel325
- · Replies 16 ·
How to better understand physics material after one reading
- babysnatcher
- · Replies 3 ·
Electric Charges Causing Centripetal Motion
- mdf730
- · Replies 2 ·
Do a comet's tails ever point in the same direction when in an orbit?
- s3a
- · Replies 17 ·
What is the magnitude of the ball's average horizontal velocity?
- LiesselZ
- · Replies 6 ·
Find the Expression of an Electric Field Produced by a Dipole
- ladyrx2020
- · Replies 2 ·
Tension in a lift system with mass 2m and 3m
- Bandarigoda
- · Replies 4 ·
Finding friction on a onedimensional tube
- ShizukaSm
- · Replies 1 ·
Temperature on resistance scale from varying resistance-temperature relationship
- CAF123
- · Replies 11 ·
What is the relationship between capacitors and inductors?
- Questions999
- · Replies 5 ·
Tangential acceleration = g sin(θ) for a ball in vertical circular motion
- babysnatcher
- · Replies 23 ·
When is gravitational acceleration negative in circular motion?
- babysnatcher
- · Replies 3 ·
Light ray reflected from sphere at (2,2,0) with center at (0,0,-1)
- Saitama
- · Replies 24 ·
Why does the right hand rule for AxB give k instead of -k?
- duplaimp
- · Replies 3 ·
Why Is My Thevenin Resistance Calculation Different from the Textbook's?
- Questions999
- · Replies 13 ·
Rotation: mass transfer and angular momentum conservation
- Avi Nandi
- · Replies 4 ·
Propagation of uncertainty for no-load voltage
- beny748
- · Replies 15 ·
Finding distance of a block with an unattached spring
- Robertoalva
- · Replies 5 ·
What is the direction of the E field at point P due to the sphere?
- Questions999
- · Replies 1 ·
What is the detailed physics of the EMS maglev levitation system
- rosieq1!
- · Replies 2 ·
Quantum Electron Energy Level for Hydrogenic atom
- JewishDude
- · Replies 3 ·
How to calculate the time over which flux changes
- poortech
- · Replies 3 ·
Use Mathematica and Kirchhoff's rules to find V out.
- stripes
- · Replies 16 ·
Conceptual problems-Work done,KE and internal energy
- Tanya Sharma
- · Replies 8 ·
Odd Form Of Eigenvalue - Coupled Masses
- Recipi
- · Replies 5 ·
Why choose /100 over x100?Why Divide by 100 when solving decibels?
- silversurf
- · Replies 4 ·
Displacement of a Rolling Ball with Initial Velocity and Constant Acceleration
- physics.
- · Replies 4 ·
Semi-major axis equation question
- eXmag
- · Replies 11 ·
Thermodynamics-Conceptual problem
- Tanya Sharma
- · Replies 5 ·
Work done and change in the internal energy
- Tanya Sharma
- · Replies 16 ·
How to Solve for F1 in a Net Torque Problem?
- Arcarius
- · Replies 1 ·
Calculating longitude and latitude given the duration of sunset
- andreea_a
- · Replies 19 ·
Cannon angle to hit a target 2000 m away and 800 m above
- babysnatcher
- · Replies 38 ·
Vector spaces problem -linear algebra
- manuel325
- · Replies 2 ·
Double slit interference missing maximum problem
- PsychonautQQ
- · Replies 15 ·
How Does Compton Scattering Affect Photon Wavelength at 90 Degrees?
- Questions999
- · Replies 3 ·
Do Electric and Magnetic Field Energies Depend on Their Sources?
- Questions999
- · Replies 1 ·
Coriolis acceleration at the surface of a region in the ocean
- hamilbr
- · Replies 3 ·
Closed integral problem: field in the plane of a magnetic dipole
- Order
- · Replies 2 ·
Thermal Conductivity and Heat Transfer in a Hot Water Bottle
- CAF123
- · Replies 47 ·
Power output of a solar panel if a complete row of cell is shadowed
- fozia.jehan
- · Replies 7 ·
How do I find the time of a bullet embedded into a block on a spring?
- agentlee
- · Replies 1 ·
Rotational Dynamics / Moment of Inertia Question
- Arcarius
- · Replies 10 ·
Rocket with 30s burn reaches max altitude in 300s total
- caveman127
- · Replies 6 ·
When to use the quadratic formula in kinematics problems?
- catzmeow
- · Replies 11 ·