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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How Do You Calculate Acceleration in a Dual Pulley System with Unequal Masses?
- dibilo
- · Replies 15 ·
Determine the reactions at "A" and "B"
- sumofmoments=0
- · Replies 2 ·
Finding reactions at supports A and B for a beam with a moving and fixed support
- sumofmoments=0
- · Replies 5 ·
Why are every sixth (or seventh) waves bigger in the ocean?
- Einlanzer
- · Replies 15 ·
Converrgence of oscillating sequence
- haXadecimal
- · Replies 3 ·
How to calculate the efficiency of anything
- daisyi
- · Replies 2 ·
Uncertainty principle for proton speed and electrons in n=6, l=4 subshell
- supermenscher
- · Replies 4 ·
Why Can Birds Sit Safely on Power Lines but Get Electrocuted When Touching Two?
- Cummings
- · Replies 3 ·
Two capacitors, two resistors and a battery
- Theelectricchild
- · Replies 2 ·
How to Solve Electrostatics Problems Using Coulomb's Law
- Callisto
- · Replies 4 ·
What is the last digit of (1997)^(1997) - (1994)^(1994)?
- maverick280857
- · Replies 10 ·
Coulomb's Law: Direction of Force on -C Charges
- jazzchan
- · Replies 4 ·
How do I calculate power-to-mass ratio?
- almohandes
- · Replies 6 ·
Water draining from inverted truncated cone with hole
- izytang
- · Replies 2 ·
Calculating Wave Pulse Travel Time for an 80ft Nylon Rope
- daisyi
- · Replies 5 ·
Point charge in a hollow sphere
- Try hard
- · Replies 2 ·
Determining force directions for equilibrium problems
- gallery
- · Replies 3 ·
Free-body diagrams and equations for rubberband airplane flight
- vvoo7vv
- · Replies 2 ·
How are the two bulk modulus equations equivalent?
- Zorodius
- · Replies 5 ·
Horseshoe Impact Force: Can Sand Substrate Substitute for Concrete?
- Horseshoes
- · Replies 2 ·
DC Circuit: Single vs. Two Bulbs Connected
- leoflc
- · Replies 2 ·
Transverse wave travel time in steel and copper wires
- djlightsout06
- · Replies 2 ·
How long to reach Mars at 11,000 m/s?
- terpsgirl
- · Replies 10 ·
A few questions i'm finding difficult.
- Gaz031
- · Replies 9 ·
Why do rubber bands sometimes follow Hooke's Law and sometimes not?
- yokan
- · Replies 6 ·
How Do You Calculate the Wavelength of a Traveling Wave?
- djlightsout06
- · Replies 2 ·
Integral of (1 + [1/2x^(1/2) - 1/2x^(-1/2)]^2)^(1/2) from 0 to 3
- carlchen
- · Replies 4 ·
Impact force on knee from rollerblading fall at 5 mph
- lettam
- · Replies 5 ·
Solving the Equation of Motion to Find v[t] and v[x]
- TopCat
- · Replies 6 ·
What is the minimum frequency of light needed to eject electrons from a metal?
- supermenscher
- · Replies 5 ·
Determining Series vs. Parallel Configuration in Two-Capacitor Circuit
- jg370
- · Replies 2 ·
Difficulty on some distance problems
- terpsgirl
- · Replies 7 ·
What is the Refractive Index for Total Internal Reflection in a 45-45-90 Prism?
- Cummings
- · Replies 4 ·
Why does air flow upward before an airfoil and divide below it?
- theperthvan
- · Replies 2 ·
Geological wonders in Europe and Africa for a report
- TeddyBear
- · Replies 2 ·
How can I declare an array of pointers to arrays of characters in C?
- Math Is Hard
- · Replies 29 ·
Having troubles integrating e^(2x)sin(x)
- haXadecimal
- · Replies 3 ·
Is JBuilder the Best Choice for Java Development?
- Cachema
- · Replies 13 ·
Newton's 2nd Law: Calculating Side Wind Effects on a Projectile
- mark-ashleigh
- · Replies 2 ·
How to Return a Pointer from a Function in C?
- Math Is Hard
- · Replies 17 ·
How Long Does a Ph.D Take? Answers to Your Questions
- EngTechno
- · Replies 2 ·
Is L[6] = 6L[1] in Laplace Transforms correct?
- SpeedBird
- · Replies 2 ·
What is dynamical mass generation in QFT?
- marlon
- · Replies 2 ·
Diameter of liquid stream at maximum height
- Joe Ramsey
- · Replies 4 ·
Waves - peaks and zero displacement
- kenallen
- · Replies 2 ·
What are the top graduate programs for mathematics?
- Saint Medici
- · Replies 5 ·
What is the change in entropy of the gas?
- daisyi
- · Replies 4 ·
What Is the Electric Potential on a Charged Cone?
- SummerPhysStudent
- · Replies 2 ·
What Is the Theoretical Dielectric Constant of Cardboard?
- istinkatphysics
- · Replies 2 ·
Estimating head impact forces on a crash test dummy
- Try hard
- · Replies 5 ·
How to Analyze Wave Period, Amplitude, and Frequency from a Graph?
- akatsafa
- · Replies 2 ·
Magnetic fields and Circular Orbits Question
- Sam_The_Great
- · Replies 7 ·
Conservation of Momentum in a Spaceship Explosion
- Beers Law
- · Replies 2 ·
Force on short wire near long current-carrying wire
- Sam_The_Great
- · Replies 3 ·
How Does Malus' Law Explain Light Transmission Through Polarizers?
- Evergreen
- · Replies 5 ·
Counting Towers: Finding a Recurrence Relation
- sjaguar13
- · Replies 24 ·
Mechanical energy of a pendulum
- akatsafa
- · Replies 2 ·
Logarithm Problems: Simplifying Expressions and Solving Equations
- KnowledgeIsPower
- · Replies 14 ·
What is entropy?
- lakshmi
- · Replies 2 ·
How Does Current Affect Spring Extension in a Magnetic Field?
- Sam_The_Great
- · Replies 2 ·
Ways are there of picking out the name ELLE from the following table
- futb0l
- · Replies 5 ·
Kinematics - How fast must torpedo go
- Omid
- · Replies 6 ·
Is My Answer Correct for Boat Crossing a River Perpendicularly?
- Omid
- · Replies 6 ·
How could I possibly know the radius of that circle?
- quarky
- · Replies 2 ·
Solve Physics Problem: Heat Conducted Through 2 Rods
- Mathwizard6254
- · Replies 2 ·
Electrostatics: suspended spheres
- AgPIper
- · Replies 2 ·
Solve Ideal Gas Problem: Net Work of Cycle
- daisyi
- · Replies 8 ·
So you should solve for the heat Q directly.
- imationrouter03
- · Replies 3 ·
What is the Formula for Calculating the Length of Cable Hanging Over a Table?
- TopCat
- · Replies 3 ·
Pressure inside champagne bottle
- akatsafa
- · Replies 2 ·
How Do the 36 Officers Problem and Finite Fields Relate?
- marlon
- · Replies 5 ·
Why Is There a '2' in the Capacitor Force Equation?
- AgPIper
- · Replies 2 ·
Decibel Scale and Noise Limits: Understanding Log Problems
- maccaman
- · Replies 2 ·
Counting Theory and Addition Rule Confuses Me
- sjaguar13
- · Replies 2 ·
The rate of change of pressure
- sarahh
- · Replies 2 ·
How Does Conservation of Momentum Explain Pressure Changes in a Pipe System?
- sarahh
- · Replies 1 ·
Calculating Apparent Weight of Stone: Specific Gravity 2.50
- akatsafa
- · Replies 2 ·
Converging and Diverging Lens Problem: Finding the Focal Lengths"
- supermenscher
- · Replies 2 ·
Thermal Question, I seem to be doing something wrong
- Brianjw
- · Replies 2 ·
What is a short circuit?
- hoxlay
- · Replies 2 ·
Problems about magnetic/electric fields
- leoflc
- · Replies 10 ·
Simple electromagnetism question
- dajugganaut
- · Replies 4 ·
Kinematics and forces: bicyclist, crate, cliff drop, billiard ball
- alzig
- · Replies 8 ·
Force, work, and energy problems
- Physicshelpneeded
- · Replies 9 ·
Impulse and average force stopping a falling ball
- Physicshelpneeded
- · Replies 9 ·
Passing pointers and arrays to a C function
- Math Is Hard
- · Replies 36 ·
Porblem about dynamic applications of torque
- wilmerena
- · Replies 2 ·
How high does a ball rise when released from the bottom of a pool?
- cjwest0
- · Replies 4 ·
Modeling particle separation in winnowing with wind and drag
- mark-ashleigh
- · Replies 4 ·
Potential V and electric field E for uniform charge density on sphere
- emiliocavalcanti
- · Replies 2 ·
Calculating Boat's Movement: Rates of Change with Rope Pulling on Pier
- HeyHow!
- · Replies 7 ·
How does the potential of the conductor decreases when it is charged
- lakshmi
- · Replies 2 ·
Understanding Calculus in Physics: Solving for Varying Acceleration
- daveed
- · Replies 2 ·
Final momentum and velocity of 3kg object after 24N·s impulse
- princexcharles
- · Replies 2 ·
Why is it easier to balance a pool stick with your finger on the tapered end?
- suffian
- · Replies 7 ·
How do I write insert and remove functions for a doubly linked list?
- abacus
- · Replies 13 ·
Electric Field at Point P on a Nonconducting Rod with Uniformly Spread Charge
- istinkatphysics
- · Replies 2 ·
C programming: working with pointers
- Math Is Hard
- · Replies 41 ·
Riverboat crossing with current: should the boat head north, northeast or northwest?
- mikeyman2010
- · Replies 23 ·
Discrete Math - Counting Theory
- sjaguar13
- · Replies 3 ·