Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Absolute & relative uncertainty
- faisal
- · Replies 2 ·
What is the relationship between pressure and density in a body of water?
- fasterthanjoao
- · Replies 3 ·
Finding the Angles: A Trigonometric Problem
- omicron
- · Replies 13 ·
Using kepler's laws to find mass of planet
- jhson114
- · Replies 8 ·
Find the Velocity of car A before the collision?
- theemassive1
- · Replies 2 ·
How to Solve These Logarithm Equations?
- Nx2
- · Replies 12 ·
Factor 2sin^2 x + 3cos x – 3 = 0
- Liquidice_69
- · Replies 10 ·
Postion of an object at a given time?
- badman
- · Replies 12 ·
Where to Place Weight for Balance on a Hanging Structure?
- campa
- · Replies 2 ·
How Does a Sphere Act as a Valve in Fluid Dynamics?
- Feynmanfan
- · Replies 4 ·
Calculating Cost of 1KWhr Heat from a Reversible Heat Pump
- h.a.y.l.e.y
- · Replies 3 ·
What Is the Correct Calculation for Young's Modulus in This Problem?
- KaneOris
- · Replies 4 ·
Elements used to make semiconductor componets before silicon
- Kaluence
- · Replies 2 ·
Calculating Amplitude of Oscillation for Colliding Objects on a Spring
- ussrasu
- · Replies 3 ·
Solving a Physics Problem: Car's Speed, Distance, and Work in 3 Seconds
- Silverbackman
- · Replies 16 ·
Force calculations on a hemisphere
- stevemir
- · Replies 2 ·
How to derive the coefficient of thermal expansion?
- tony_engin
- · Replies 2 ·
Solving Thermal Physics Questions: Q1 Calorimeter & Q2 Ice & Water
- dagg3r
- · Replies 2 ·
Motion Question: Speed of 150kg Pile Driver Falling 7.5m
- wickid
- · Replies 4 ·
Fertilizer, Neutralizing, Separating Metals
- decibel
- · Replies 7 ·
That classic 3-blocks question
- Celestiela
- · Replies 8 ·
Projectile Explosion: Finding the Larger Mass's Landing Spot
- h.a.y.l.e.y
- · Replies 2 ·
How can I determine the absorption coefficient \mu?
- Kahsi
- · Replies 2 ·
Using Differential Equations to Solve for Velocity of a Free Falling Body
- mekkomhada
- · Replies 3 ·
Finding Resistance and Inductance of solenoid
- teknodude
- · Replies 3 ·
How to Plot the Output Response of a Sawtooth Waveform Using Laplace Transform?
- Brian Moughtin
- · Replies 2 ·
Fluid Mechanics: Questions on 2D Flows
- Raparicio
- · Replies 2 ·
How Do I Solve This Radioactive Decay Problem?
- Sanosuke Sagara
- · Replies 4 ·
Is Radioactive Decay Calculation Confusing?
- Sanosuke Sagara
- · Replies 2 ·
Finding Constants for Partial Fraction Integration
- gordda
- · Replies 2 ·
Comparing Times of Flight in a Linear Air Resistance Model
- ptk3
- · Replies 10 ·
Maximum Vibration Period for Object Losing Mass
- truth_hunter
- · Replies 7 ·
Solve Work-Energy Problems: Skier on Hill & Cliff Jump
- nutster
- · Replies 15 ·
What Is the Required Coefficient of Friction for a Mass on an Incline?
- CanUHelpMe
- · Replies 20 ·
How Does Friction Affect a Ball's Energy and Travel Distance?
- lwymarie
- · Replies 8 ·
How Far Can a Parabolic Reflector Detect a Whisper?
- skinnyl
- · Replies 2 ·
First Order Differential Equation
- DivGradCurl
- · Replies 3 ·
How to Solve the 2005 AP Physics B Free Response Questions?
- newo17
- · Replies 10 ·
Comparing Effectiveness of Computer Software & Standard Reading Curriculum
- Pseudo Statistic
- · Replies 2 ·
What is the Formula for Magnetic Force in Electromagnets?
- ccflyer
- · Replies 6 ·
How do you determine the wavelength of the string?
- ~angel~
- · Replies 5 ·
How Does Physics Explain Collisions in Ice Hockey?
- jatinder_tiwana
- · Replies 2 ·
Struggling with Finals Revision? Get Help for Qn 3 in Less Than 12 Hours!
- babtridge
- · Replies 3 ·
Hints please: Carnot Engine problem
- nineeyes
- · Replies 3 ·
Pressure and density in flluids
- sghaussi
- · Replies 2 ·
Question regarding Atomic Structure (orbits)
- Sanosuke Sagara
- · Replies 3 ·
Question regarding radius of circular paths (chapter the nucleus)
- Sanosuke Sagara
- · Replies 2 ·
What Is the Coefficient of Kinetic Friction for a Box Sliding Down a Ramp?
- cavery4
- · Replies 2 ·
What is the correct method for finding the angle of vectors in physics?
- badman
- · Replies 5 ·
Solving Mechanics: Calculating Reactions at Origin & End Point | Quick Tips
- Satoy
- · Replies 4 ·
Is This Logarithmic Simplification Correct?
- cscott
- · Replies 12 ·
How Do You Calculate Projectile Motion for a Stone Thrown Upward from a Cliff?
- Jenybeny27
- · Replies 7 ·
Moment of Inertia: Solve Your Problem Now
- iNCREDiBLE
- · Replies 8 ·
Struggling with Integrals? Here's How to Improve!
- Vadim
- · Replies 2 ·
Calculating Pressure for a Hydraulic Lift: A Scientific Approach
- sghaussi
- · Replies 12 ·
Finding the quantity of a radioactive substance and standard units
- EIRE2003
- · Replies 2 ·
Calculate Average Velocity: vav = (d2 - d1)/(t2 - t1)
- AnthonyC
- · Replies 9 ·
Power Loss in a 10kV, 5ohm Transmission Line
- DB
- · Replies 2 ·
How Do You Solve Basic Physics Problems Using Textbook Formulas?
- Lizz
- · Replies 5 ·
How Do Mechanics and Physics Solve Practical Problems?
- woodworker101
- · Replies 10 ·
Metal ring repelled from AC coaxial coil
- nvalentour
- · Replies 2 ·
Solve Projectile Motion Problems with Speed and Distance | Diagram Included
- AnthonyC
- · Replies 9 ·
How Do You Calculate Oscillation Periods and Forces on a Dam?
- blackbody
- · Replies 2 ·
Antiderivative for 1/[x²√(1+x²)]?
- Zorodius
- · Replies 13 ·
Is the Electric Field of a Charged Disc Correct?
- Reshma
- · Replies 11 ·
Find the Integral of x^3 * (x^2 - 8)^1/2 | Calculus 2
- waterchan
- · Replies 5 ·
What Causes Time to Differ for Twins in the Twin Paradox?
- rczmiller
- · Replies 7 ·
Projectile Height Calculation: Time to Reach 10m with Given Initial Velocity
- Bartosz
- · Replies 2 ·
Solving Mechanics Problem: Velocity of Rope Through Hole
- z0r
- · Replies 11 ·
Calculating Average Kinetic Energy and RMS Speed of Gas Molecules
- cogs24
- · Replies 2 ·
Stuck on Homework: Analyzing 2D Shear Velocity Field
- rolandk
- · Replies 2 ·
Cardboard boat building for AP Physics help
- Tokimasa
- · Replies 3 ·
Anyone want to take a look at this?
- bullroar_86
- · Replies 5 ·
Quick math probability question
- seiferseph
- · Replies 14 ·
Question about relativistic energy
- andrew410
- · Replies 2 ·
Partial Derivatives Explained: Real-Life Examples and Solutions
- omgitsroy326
- · Replies 7 ·
Electric Fields of Like Charges
- Apple123
- · Replies 20 ·
Sig Fig & Acids - pH Change & NaOH Effects
- Dooh
- · Replies 5 ·
What Charge Causes a Pea to Discharge in Dry Air?
- Jodi
- · Replies 2 ·
How to Build an Electromagnetic Motor for a School Project?
- rocketboy
- · Replies 1 ·
Help Solving a Problem with Cylindrical Wires: Magnetic Force Calculation
- tiagobt
- · Replies 2 ·
Rotational Equilibrium and Dynamics Help
- woodworker101
- · Replies 4 ·
How Do You Calculate Friction Coefficients in Physics Without Mass?
- jen333
- · Replies 2 ·
Verify Solutions to First Order PDEs
- Oxymoron
- · Replies 4 ·
Assigning Oxidation States: Rules & Lewis Structures
- Omid
- · Replies 2 ·
Part B: "150W Engine Efficiency - Heat Given off Per Cycle
- jennypear
- · Replies 2 ·
Solve Series Convergence Problem: Ratio Test
- RadiationX
- · Replies 14 ·
Understanding Refraction: Molecular Structures and their Unique Effect on Light
- !Live_4Ever!
- · Replies 2 ·
Need help with nonlinear differential equations
- andrew410
- · Replies 7 ·
AC Circuit Physics: Voltage vs. Current Relationships
- suf7
- · Replies 2 ·
Physics Help - Static Equilibrium
- Inv.e[ln(t*r)]=t
- · Replies 8 ·
Solving Lever Mechanics: Find Ideal Mechanical Advantage
- billnyerocks
- · Replies 5 ·
Solving Green's Function for t^2x''+tx' - x = 0
- Oxymoron
- · Replies 6 ·
What is the Relationship Between Magnetic Field Strength and Velocity of Charge?
- roger
- · Replies 3 ·
Uniform Convergence Analysis of $\sum_{n=1}^{\infty}2^{n}\sin \frac{1}{3^{n}x}$
- twoflower
- · Replies 2 ·
How Does a Carnot Refrigerator Work Between Different Temperatures?
- ziddy83
- · Replies 4 ·
How Can I Solve Non-Linear Equations for Motion with Multiple Variables?
- Jim_Shah
- · Replies 4 ·
Where to Buy Iron Fillings, Wire, & Magnets
- doradexplorer
- · Replies 2 ·
How Do You Find the Gradient of a Line?
- SleSSi
- · Replies 10 ·
Pendulum problem - there's got to be an easier way
- tony873004
- · Replies 7 ·