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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What is vibrational energy in the context of energy quanta?
- asdf1
- · Replies 2 ·
Perpendicular Bisector of 2 Points
- yourmom98
- · Replies 3 ·
Fuse Rating Problem: Which is True?
- phyphysics
- · Replies 2 ·
Why Do Stars Flicker but Not Planets?
- mohdfasieh
- · Replies 3 ·
Why Does Dispersion Bend Blue Light More Than Red, Unlike Diffraction?
- wrongway
- · Replies 8 ·
Calculating Daylight Hours Using Trigonometry
- TonyC
- · Replies 7 ·
Pendulum- Maximum displacement?
- yourmom98
- · Replies 2 ·
Solving Matrix Equations: k Values and Matrix Multiplication
- dagg3r
- · Replies 2 ·
What angle maximizes cannon range from a cliff of height h?
- bomba923
- · Replies 8 ·
Proving Cauchy Sequences in the p-adic Metric
- Oxymoron
- · Replies 3 ·
Proving p-adic Convergence: Find Series' Limit
- Oxymoron
- · Replies 5 ·
Why are there limitations to applying Ohm's Law in electric circuits?
- hidayah
- · Replies 7 ·
What is the Expansion by Minors in Linear Algebra?
- Bob19
- · Replies 3 ·
Several things that are confusing
- asdf1
- · Replies 2 ·
Find the total charge. then decide whether you have an atom or an ion
- Pre-AlgebraDude
- · Replies 2 ·
First High & Low Tide in Harbor: Water Depth at 12am & 6pm
- TonyC
- · Replies 4 ·
How Does a 10 Volt DC Shift Affect a Sine Wave Voltage Graph?
- srfrgrl727
- · Replies 2 ·
Can an ant reach the free end of a stretching rubber band?
- koosh
- · Replies 32 ·
Question re. Conservation of angular momentum
- dautowerk
- · Replies 2 ·
Calculating Acceleration from Change in Velocity and Distance
- courtrigrad
- · Replies 2 ·
Wave or Particle: What Defines Electromagnetic Radiation?
- asdf1
- · Replies 5 ·
Quick Question on Sets: Sketching H = {(x,y) : xy = 0} - Explained
- Benny
- · Replies 4 ·
Calculating Height of Prop Tip at 12 Minutes: 2 of 2-Trig
- TonyC
- · Replies 3 ·
Modeling Tides: When is the First High Tide and Low Tide?
- TonyC
- · Replies 3 ·
Solve Trig Equation: cosθ=4/9, 3π/2≤θ≤2π
- TonyC
- · Replies 5 ·
Energy and Time Period of a Pendulum in Simple Harmonic Motion
- Subhasish Mandal
- · Replies 2 ·
Total energy of a dielectric sphere
- hhh79bigo
- · Replies 2 ·
Simplifying cos(2x)sin(2x) - cos(2x)
- TonyC
- · Replies 7 ·
Gravitational red shift question
- asdf1
- · Replies 3 ·
What is meant by dispersion in a wave?
- asdf1
- · Replies 2 ·
Why Is Phase Velocity Defined as v=w/k?
- asdf1
- · Replies 2 ·
How Can I Solve These Complex Translation and Calculation Problems?
- Tenshu
- · Replies 2 ·
How does air resistance affect the trajectory of a projectile?
- bomba923
- · Replies 3 ·
Why is fluorine more reactive than iodine but lithium less reactive than rubidium?
- matrix5
- · Replies 2 ·
How do I add letters to numbered list items in LaTeX?
- amcavoy
- · Replies 2 ·
What is the change in momentum when an object is brought to rest?
- elissadi
- · Replies 3 ·
How can I calculate the time it takes for a rocket to complete a pitch maneuver?
- katts
- · Replies 2 ·
What is observed at the center where convex lens and glass plate touch?
- skrewd1
- · Replies 3 ·
Calculate Net Downward Force on Mars Water Tank
- badman
- · Replies 2 ·
Finding actual mechanical advantage with 3000kg effort and 2000kg load
- scientist
- · Replies 10 ·
What Do the Commutators in Peskin and Schroeder's Equation (2.30) Represent?
- Ratzinger
- · Replies 2 ·
Why is enthalpy a state function if dH equals Q?
- suli
- · Replies 2 ·
Work Done by Gas: Pexternal*dV?
- suli
- · Replies 2 ·
How do you calculate ampere turns for a toroid with an air gap?
- hiiragizawa
- · Replies 3 ·
Internal resistance and electromotive force problem
- nutzweb
- · Replies 2 ·
Solving Troublesome Integral: Quantum Mechanics Problem
- genxhis
- · Replies 3 ·
Magnetic field and induced EMF
- jaymode
- · Replies 2 ·
At what speed does the food enter the stomach
- frozen7
- · Replies 4 ·
2d Coulomb and Biot-Savart laws
- Tsunami
- · Replies 2 ·
What caused the cable to break during the lifting of a 4500kg container?
- ixbethxi
- · Replies 4 ·
Calculating Deuterium Atoms in 4 kg Ocean Water and Energy Needs of US
- mayo2kett
- · Replies 3 ·
Finding initial radius when rock dropped from space hits Earth at 8368 m/s
- pkossak
- · Replies 10 ·
Jet landing speed calculation: getting 333 km/hr instead of 666 km/hr
- pkossak
- · Replies 6 ·
How Does String Tension Vary with Position in Vertical Circular Motion?
- Kchu
- · Replies 3 ·
Total Current Increase when Cells Connected in Parallel
- phyphysics
- · Replies 7 ·
Solving Steel Shear Stress Problems
- psycovic23
- · Replies 3 ·
Find Angular Velocity of a Ball w/ R,y,g
- ixbethxi
- · Replies 11 ·
Sl(2,z) matrices with integer coefficients
- JSG31883
- · Replies 2 ·
What is the final temperature of the contents of the container?
- pkossak
- · Replies 7 ·
How Do I Calculate Theoretical Charge and Discharge Times in RC Circuits?
- d_sx
- · Replies 2 ·
How do determine hybrid orbitals
- professor
- · Replies 2 ·
Why Can't We Calculate the Height of a Ball Thrown Up Without Air Resistance?
- elissadi
- · Replies 3 ·
Solving for n in an exponential equation 34=r^n
- yourmom98
- · Replies 3 ·
Banking corner with sin θ > 1 in centripetal force calculation
- Physics_Student101
- · Replies 9 ·
Calculating Volume of Sample in Air and Water
- badman
- · Replies 2 ·
Work Done on a Book: 14 J or 42 J?
- mystry4
- · Replies 5 ·
Pressure difference from vacuum cleaner hose and octopus sucker
- psycovic23
- · Replies 3 ·
.Calculating Heat Released from Gas Expansion at Constant Temperature
- pkossak
- · Replies 2 ·
Charged Conductor: Understanding Force in a Cavity
- Kazza_765
- · Replies 2 ·
Will this configuration reduce the shear stress on the main beam?
- sid_galt
- · Replies 2 ·
Finding resistance R and equivalent resistance given 2Ω resistor voltage
- shaiqbashir
- · Replies 7 ·
Calculating Effective Spring Constant for Platform Supported on 4 Springs
- huskydc
- · Replies 7 ·
Figuring Out Total Kinetic Energy of Rotating Object
- marcia888
- · Replies 2 ·
How Do You Calculate Bicep Force in a Torque Problem?
- marcia888
- · Replies 2 ·
How Many Light Propagation Modes Exist in a Water-Filled Cubic Cavity?
- Cummings
- · Replies 2 ·
Help with L'Hôpital's rule proof for exam
- iNCREDiBLE
- · Replies 2 ·
30,000kg Snow vs 1mL Water: Heat Energy Comparison
- Gashouse
- · Replies 3 ·
Cart design with accelerations, turns, and projectile motion
- altecsonyc
- · Replies 5 ·
What materials should I use for my egg parachute drop assignment?
- landyjg
- · Replies 2 ·
Factorising a Quadratic I still struggle
- monet A
- · Replies 10 ·
Good online source on electrostriction
- Tsunami
- · Replies 2 ·
Potential energy graph x-component
- psingh
- · Replies 3 ·
Integral convergence and limit comparison test
- Benny
- · Replies 3 ·
What is the speed of one electron relative to the other?
- Reshma
- · Replies 2 ·
Solve ln ( ln ( ln ((e^x) +4)))=e
- frozen7
- · Replies 3 ·
Tank with 1000 gal water, salt brine flowing in and out
- asdf1
- · Replies 5 ·
Kinetic Energy of 0.2 kg Ball with 20 m/s Velocity
- pkossak
- · Replies 4 ·
Why does s = 1/2at² give 9 but the table shows 12?
- yu_wing_sin
- · Replies 26 ·
Critical point at origin for f(x,y)=ax^n+cy^n when Hessian determinant is zero
- pbialos
- · Replies 2 ·
Consequences of Air Impurities in Sulfur Burning
- recon
- · Replies 2 ·
Interest on principal over 5 years
- yourmom98
- · Replies 5 ·
Intersecting circles in 2D: find some coordinates
- Emieno
- · Replies 4 ·
Angle between vectors (2,1,-4) and (-3,0,1) using dot product formula
- philo51
- · Replies 4 ·
Angular Momentum Conservation: A Student on a Rotating Stool
- Wen
- · Replies 3 ·
Kinetic Energy Lost in Crumple Zones
- Physics_Student101
- · Replies 5 ·
Does x*y/(|x|+|y|) have a limit at origin and does an improper integral converge?
- pbialos
- · Replies 4 ·
How to convert Celsius to Fahrenheit
- Caesar_Rahil
- · Replies 4 ·
Setting Up DE for Spring Mass Motion
- Benny
- · Replies 2 ·
What Is the Equation of a Parabola with Vertex (-2, 3) and Focus (0, 3)?
- Dirac
- · Replies 8 ·