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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Proving Inequality: 1/(n+1) <= ln(1+1/n) <= 1/n
- matrix_204
- · Replies 5 ·
Finding payload mass for helium and hydrogen balloons
- ramin86
- · Replies 2 ·
How Much Energy to Position a Charge at the Center of a Charged Square?
- the4thcafeavenue
- · Replies 2 ·
Electrical Resistivity Equation
- Matt.D
- · Replies 4 ·
Calculate Heating Time for Water Bath to Reach 58.9°C
- Heart
- · Replies 5 ·
How Do I Verify Stokes' Theorem for a Hemispherical Surface?
- Hoofbeat
- · Replies 4 ·
One thing I've noticed in this/these forum/s
- logicalman
- · Replies 12 ·
Determine normal force and friction of a toboggan with children
- thomasrules
- · Replies 6 ·
Speed of sound in solids and effects of temperature
- sim_shopaholic_csi
- · Replies 2 ·
Maximum likelyhood extimater(MLE)
- semidevil
- · Replies 4 ·
How do you take the natural logs?
- semidevil
- · Replies 2 ·
Problem with math integral substitution
- ProBasket
- · Replies 2 ·
Solving for Initial Velocity in Projectile Motion
- runner1738
- · Replies 2 ·
Solving an RC Circuit with 68.0% Charge in 0.980s
- Kawrae
- · Replies 2 ·
How do I present solutions for sin (x+y)=sin (5x+z) with restricted values of x?
- primarygun
- · Replies 3 ·
Electric Field inside a conductor
- leolaw
- · Replies 2 ·
Finding the Rate of Change of Water in a Trough
- footprints
- · Replies 9 ·
How far the peg is driven into the ground due to impact?
- Gughanath
- · Replies 2 ·
How Does Thermodynamics Explain Power Generation in Motorcycle Engines?
- Kelvin
- · Replies 8 ·
Funny science equation or joke for Science Olympics team shirts
- Garret
- · Replies 5 ·
Sizing holes in a garbage bag hovercraft for minimum friction
- Aki
- · Replies 2 ·
A hypothetical pressure question what if u covered the top of a container?
- vaxopy
- · Replies 3 ·
How to solve resistance problem
- UrbanXrisis
- · Replies 3 ·
Electrostatic Forces on Charges at Different Locations
- Pietjuh
- · Replies 2 ·
Calc Coeff of Friction for 60km/h on 150m Curve
- Kp0684
- · Replies 2 ·
Calculating Entropy Change in a Brass Rod Undergoing Heat Conduction
- Kelvin
- · Replies 3 ·
Effective resistance of truncated conical cylinder
- meteorologist1
- · Replies 8 ·
Rocket reaching twice its height: what changes?
- RadiationX
- · Replies 10 ·
How does charge redistribute when three spheres are connected and separated?
- albert611
- · Replies 3 ·
Particle physics - absorption length
- JamesJames
- · Replies 8 ·
What are some useful websites for basic electromagnetism?
- no name
- · Replies 2 ·
Calculating Capacitor Charge and Potential Difference in Series
- Soaring Crane
- · Replies 4 ·
How to calculate when normal distriubtion table is not enough?
- semidevil
- · Replies 2 ·
Why Is There a (dBx/dx)*(dx/2) Term in Divergence Theorem Proof?
- retupmoc
- · Replies 7 ·
Physics - work done by a spring
- Felix83
- · Replies 3 ·
Magnetism: Solving Force Problem with qvB Equation
- Axeman2k
- · Replies 2 ·
Calculating moles and mass of sugar and alum
- gokugreene
- · Replies 13 ·
Finding amperage in Behr Free-Fall Apparatus
- bjon-07
- · Replies 4 ·
What Is the Magnetic Force on a Current-Carrying Wire in Earth's Field?
- Andromeda321
- · Replies 2 ·
Natural logarithm of negative numbers
- DivGradCurl
- · Replies 8 ·
Basic invertible matrix theorem proof.
- Evil Robot
- · Replies 2 ·
Solving the Puzzling Physics Problem: Chain Falling Off Table
- No Name Required
- · Replies 8 ·
Electric Potential/Electric Potential Energy question
- benji
- · Replies 3 ·
How Accurate Is the Midpoint Rule for Estimating Integrals?
- DivGradCurl
- · Replies 1 ·
Why does the water shoot up out of the straw at the top
- Shay10825
- · Replies 19 ·
Calculating Frictional Forces on a Loaded Penguin Sled on an Inclined Plane
- Kp0684
- · Replies 2 ·
How Much Did Sid Carrington Invest in Each Type of Investment?
- EvilPony
- · Replies 2 ·
How to Control a Boat Rudder: Suggestions Needed
- sharans
- · Replies 5 ·
What is the correct probability for obtaining no defective microprocessors?
- Townsend
- · Replies 4 ·
Where Are the Zero Potential Points Located in a Two-Charge System?
- linemanpete
- · Replies 2 ·
Centripetal acceleration of car around curve
- bignasty
- · Replies 12 ·
How to Solve an Integration Substitution Problem?
- UrbanXrisis
- · Replies 5 ·
How Do You Integrate Complex Numbers into Differential Equations Solutions?
- sisigsarap
- · Replies 7 ·
Seemingly easy electric potential problem
- bemigh
- · Replies 3 ·
Calculating Electric Force on -3.29µC Charge at y=0.493m
- Lannie
- · Replies 2 ·
Pressure 1m below water surface: absolute or gauge pressure
- vaxopy
- · Replies 3 ·
Methane Cylinder Pressure Under Fire: 1080atm/1568psi
- ElectricMile
- · Replies 2 ·
Find the slope and angle of inclination
- gillgill
- · Replies 15 ·
What does this integral mean and how can it be solved?
- DivGradCurl
- · Replies 3 ·
What is the energy of an electron in a circular orbit in the Bohr model?
- thisisfudd
- · Replies 6 ·
AP Physics: Circuits Mindteaser
- soccerjayl
- · Replies 2 ·
How Do Charges Distribute in a Series RC Circuit with Two Capacitors?
- Jacob87411
- · Replies 9 ·
Newton's second law for car force problem
- Kahsi
- · Replies 4 ·
Calculate Satellite Period of Iron Planet
- vaxopy
- · Replies 7 ·
Why does i^(4/3) equal −1/2 + i√3/2?
- DivGradCurl
- · Replies 7 ·
Finding Resistance in Infinite Chain of Resistors
- GingerBread27
- · Replies 3 ·
FFT of real even data has imaginary components
- brian0918
- · Replies 9 ·
How to Put an Angstrom Symbol in Microsoft Equation Editor
- tony873004
- · Replies 11 ·
Trig substitution for ∫x√(6x²-36x+49)dx
- ProBasket
- · Replies 2 ·
How Much Kinetic Energy Does a Proton Acquire Compared to an Electron?
- leolaw
- · Replies 2 ·
Why use 133° instead of 47° for Alex's force components in tug of war
- RadiationX
- · Replies 7 ·
What is the volume of cavities?
- prasanna
- · Replies 2 ·
How Do You Calculate Current Through Each Resistor in a Mixed Circuit?
- LakeMountD
- · Replies 8 ·
How many odd numbers are there between 3000 and 7000
- Omid
- · Replies 12 ·
Drag Deceleration: Bullet Drag Basics
- sirasher
- · Replies 2 ·
Question regarding a charge problem
- ucdawg12
- · Replies 2 ·
Max speed of glider with double pulley and falling cement tub
- nineeyes
- · Replies 4 ·
How do you size an arch for a balsa wood bridge?
- IGeekbot
- · Replies 2 ·
Problem on the second law of thermodynamics
- mathlete
- · Replies 6 ·
Doppler Effect aturla frequency
- stunner5000pt
- · Replies 3 ·
How do I calculate my weight on Mars?
- xelda
- · Replies 2 ·
Calculating the Speed of a Particle After 8.59 s
- the_d
- · Replies 3 ·
Finding perceived star cluster density using stellar stereography
- DivGradCurl
- · Replies 18 ·
Does Earth's Inward Electric Field Indicate Its Charge Polarity?
- thisisfudd
- · Replies 2 ·
Net Magnetic Force on Rect. Current Loop
- figs
- · Replies 3 ·
Quick Chemical kinetics question
- Link
- · Replies 10 ·
Original Physics Experiment Ideas: Building a Resonance Column in Four Days
- Lianah
- · Replies 2 ·
Torque on a loop of wire carrying a current
- figs
- · Replies 5 ·
Find Divergence of Vector Field: $\vec F$
- Reshma
- · Replies 3 ·
Electric potential inside conductor derivation
- bemigh
- · Replies 2 ·
How many sides does the n-gon have?
- maverick280857
- · Replies 2 ·
Linearly Dependent? Clarifying Wronskian Results
- kdinser
- · Replies 3 ·
Limit of -4/√(x+3) as x approaches infinity
- ProBasket
- · Replies 7 ·
Trapping the exact value of the integral
- DivGradCurl
- · Replies 2 ·
One more question on Magnetic Fields
- andrew410
- · Replies 2 ·
Nuclear physics Pions and Parity?
- Davorak
- · Replies 1 ·
What Values of b Satisfy the Inequality 1296(b^3) - 324(b^2) - 1008b + 108 > 0?
- lokisapocalypse
- · Replies 2 ·
Finding Light Shifting Distance: An Exercise in Refraction
- Bri
- · Replies 3 ·