Introductory Physics Homework Help Forum

Post thread
Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Circular Velocity: Speed of Second Hand
  • Aerospace
  • · Replies 6 ·
Replies
6
Two bodies are falling with negligible air resistance
  • Aerospace
  • · Replies 2 ·
Replies
2
What is the connection between velocity and maximum height?
  • NINHARDCOREFAN
  • · Replies 9 ·
Replies
9
Magnitude of the Initial Velocity
  • Aerospace
  • · Replies 2 ·
Replies
2
Why Does an Atwood's Machine Behave as It Does?
  • Leilei
  • · Replies 2 ·
Replies
2
Solving Acceleration Problem for Jaguar S-Type R
  • tucky
  • · Replies 2 ·
Replies
2
Model rocket - free fall acceleration again
  • missrikku
  • · Replies 3 ·
Replies
3
Intro to physics vector problem
  • lizette
  • · Replies 2 ·
Replies
2
Stone dropping - yet another free fall acceleration problem
  • missrikku
  • · Replies 2 ·
Replies
2
Why Are Black Holes Considered Bottomless Pits in Space-Time?
  • photon
  • · Replies 3 ·
Replies
3
Understanding Optics: Paraxial Magnification & Snell's Law Simplified
  • jlmac2001
  • · Replies 1 ·
Replies
1
Resistance: Non-constant Surface Area
  • discoverer02
  • · Replies 5 ·
Replies
5
Geometric Sequences and Logarithms
  • Astronomer107
  • · Replies 3 ·
Replies
3
Converting velocity/time graph to acceleration/time
  • NINHARDCOREFAN
  • · Replies 2 ·
Replies
2
Vector Proofs using vector components
  • lizette
  • · Replies 2 ·
Replies
2
Free fall of ball and acceleration
  • missrikku
  • · Replies 3 ·
Replies
3
God how do you prove geometry theorems?
  • PiRsq
  • · Replies 6 ·
Replies
6
Solving Arithmetic and Series Problems in IB Math Methods
  • Astronomer107
  • · Replies 4 ·
Replies
4
Precession of the perihelion of Mecury
  • tdotson
  • · Replies 2 ·
Replies
2
A two trains problem (distance and speed)
  • missrikku
  • · Replies 2 ·
Replies
2
Calculating Tension and Acceleration in a Pulley System | Physics Help
  • Leilei
  • · Replies 6 ·
Replies
6
What's the volume of an electron?
  • Element
  • · Replies 3 ·
Replies
3
Finding a in circular motion problem
  • infraray
  • · Replies 4 ·
Replies
4
Ok does any1 know any other solver websites?
  • vadlamudit
  • · Replies 5 ·
Replies
5
Finding the Least Speed for Rotating Eggs in a Basket
  • alchemist
  • · Replies 2 ·
Replies
2
Proving Prime Numbers: Understanding the Non-Divisibility Theorem in Mathematics
  • Hoovilation
  • · Replies 3 ·
Replies
3
Conservation of energy between two charged sheres
  • Will
  • · Replies 2 ·
Replies
2
Electric charge and Electric Field
  • rdoug 33
  • · Replies 2 ·
Replies
2
How to Calculate Speed and Time for Pions and Spacecraft?
  • jlmac2001
  • · Replies 2 ·
Replies
2
How Does the Periodic Table Influence the Atomic Structure of Metals?
  • garytse86
  • · Replies 2 ·
Replies
2
Find the angle that the vector R
  • NINHARDCOREFAN
  • · Replies 6 ·
Replies
6
When a source gives out voltage
  • PiRsq
  • · Replies 11 ·
Replies
11
Checking a Range Problem: Help Me Find the Error!
  • kashmirekat
  • · Replies 5 ·
Replies
5
Solve for Average Velocity during 2nd Half of Trip
  • ffrpg
  • · Replies 2 ·
Replies
2
Help with second part of question
  • jlmac2001
  • · Replies 2 ·
Replies
2
Balance Oxidation-Reduction Equations - Steps & Examples
  • gigi9
  • · Replies 3 ·
Replies
3
Tungsten wires of all electric light bulbs
  • discoverer02
  • · Replies 2 ·
Replies
2
Solving Vector Problems: Magnitude, Angle & Sum
  • Moxin
  • · Replies 4 ·
Replies
4
Initial Velocity of Diver: Mag & Dir
  • Unknowned
  • · Replies 5 ·
Replies
5
Solving Atwood's Machine Problem
  • Leilei
  • · Replies 5 ·
Replies
5
A wire with a resistance R is lengthened to 1.25
  • discoverer02
  • · Replies 4 ·
Replies
4
Research Assignment Ideas for Astrophysics Student
  • Astrophysics
  • · Replies 13 ·
Replies
13
How do I solve this challenging AP Physics mechanics problem?
  • beeftrax
  • · Replies 2 ·
Replies
2
Understanding Relative Abundance in Chemistry: A Comprehensive Guide
  • sinnie16
  • · Replies 2 ·
Replies
2
Get Your 7 Year Old Interested In Science
  • Sourire
  • · Replies 2 ·
Replies
2
Solve Physics Problem: Target 120 m Away, Speed 250m/s
  • kashmirekat
  • · Replies 2 ·
Replies
2
Help with Homework Assignment: Two Puzzling Questions
  • tucky
  • · Replies 2 ·
Replies
2
What Units Must Coefficients Have for Maximum Particle Position Calculation?
  • missrikku
  • · Replies 2 ·
Replies
2
Escape velocity and acceleration from gravity
  • Cpt. Bob
  • · Replies 4 ·
Replies
4
What angles will allow the football to clear the crossbar?
  • terryaki
  • · Replies 2 ·
Replies
2
Hi, I'm in AP Calculus and I feel really stupid
  • Daniel
  • · Replies 14 ·
Replies
14
Time change and degrees longitude
  • missrikku
  • · Replies 9 ·
Replies
9
Solving Displacement Without Time
  • cheer_chic
  • · Replies 4 ·
Replies
4
Looking for a Picture with Einstein and 29 Scientists?
  • vadlamudit
  • · Replies 2 ·
Replies
2
Find Min Distance for Train to Avoid Collision
  • ffrpg
  • · Replies 5 ·
Replies
5
What was the elapsed time of the flight stone?
  • ffrpg
  • · Replies 5 ·
Replies
5
Mass problem dealing with areas and lengths
  • missrikku
  • · Replies 3 ·
Replies
3
Stuck on Physics Question 72: Seeking Help
  • Hyperreality
  • · Replies 2 ·
Replies
2
Proving Electric Flux Using a Spherical Gaussian Surface | E&M Class Problem
  • Will
  • · Replies 6 ·
Replies
6
Calculating Average Acceleration of Styrofoam Ball
  • ffrpg
  • · Replies 2 ·
Replies
2
Can I get a jump start in solving this
  • dr_pooool
  • · Replies 3 ·
Replies
3
Graphs of a vs. t, v vs. t, and d vs. t ?
  • IamHenry
  • · Replies 8 ·
Replies
8
Choose the best scale for the axes for x = 10, 20, and 30
  • dr_pooool
  • · Replies 3 ·
Replies
3
Why do nuclear power plants raise the temperature of sea water?
  • 22-16
  • · Replies 5 ·
Replies
5
Centripetal Force/ conservation of momentum/ etc
  • FestiveF
  • · Replies 5 ·
Replies
5
What is the displacement of the particle
  • ffrpg
  • · Replies 2 ·
Replies
2
Where is the point of application of the Acsimet force ?
  • pkh
  • · Replies 9 ·
Replies
9
A 15 LB weight is dropped vertically 1 ft
  • Nornh
  • · Replies 4 ·
Replies
4
A weight of 15 lbs is suspended by a single rope
  • Nornh
  • · Replies 2 ·
Replies
2
Understanding Newton's Laws: Solving Physics Problems with Ease
  • celtchic
  • · Replies 3 ·
Replies
3
What is the best thing that a young scientist can do?
  • Simfish
  • · Replies 14 ·
Replies
14
Should AP Physics questions go under K-12 or college level?
  • Matt
  • · Replies 2 ·
Replies
2
Parameterization of Arc Length Function
  • discoverer02
  • · Replies 8 ·
Replies
8
How Does Compression Affect the Kinetic Energy of a Bowling Ball?
  • Cummings
  • · Replies 3 ·
Replies
3
Mousetrap car material suggestions
  • Hyperreality
  • · Replies 4 ·
Replies
4
How much calculus is in 1st semester physics?
  • Nitrus
  • · Replies 4 ·
Replies
4
Question on binary stars & binary stars
  • mikky_t
  • · Replies 2 ·
Replies
2
What Steps Are Missing in My 4x4 Matrix Inversion Process?
  • tony blair
  • · Replies 2 ·
Replies
2
Is the Scientific Process really used by scientists?
  • split
  • · Replies 2 ·
Replies
2
Explaining Why Dry Cell Battery Resistance Increases & Power Pack Resistance
  • Canuck156
  • · Replies 5 ·
Replies
5
Electrical Field of a Parallel Plate Capacitor
  • meister
  • · Replies 3 ·
Replies
3
Proving the Gamma Function: Using Substitution and Integral Calculus
  • iceman
  • · Replies 2 ·
Replies
2
APA Citation and Format: Resources & Links
  • Sting
  • · Replies 6 ·
Replies
6
Understanding Negative Exponents in College Algebra
  • Cod
  • · Replies 8 ·
Replies
8
Tension of two pieces of string
  • whatagun
  • · Replies 7 ·
Replies
7
Uniersity of Texas Physics Curriculum
  • Echo 6 Sierra
  • · Replies 3 ·
Replies
3
Mastering HEAT: Tips and Tricks for a Successful Presentation
  • billbo
  • · Replies 4 ·
Replies
4
X-ray tube used for cancer therapy
  • jpnnngtn
  • · Replies 9 ·
Replies
9
Making a metal permanently positive and permanently negative
  • Hypothesis
  • · Replies 1 ·
Replies
1
Calculate Current for 100W Lamp in 110V & 220V Circuits
  • PiRsq
  • · Replies 9 ·
Replies
9
What went wrong with finding the resultant?
  • Sting
  • · Replies 10 ·
Replies
10
Job for a mathematician or a physicist
  • MathematicalPhysicist
  • · Replies 6 ·
Replies
6
What Is the Maximum Speed to Stop Safely Within 40 Meters?
  • NMiller5a
  • · Replies 2 ·
Replies
2
How can I find the inverse of this matrix using any method?
  • tony blair
  • · Replies 3 ·
Replies
3
Relationship between Magnet Rotation Speed and Induced Voltage in a Solenoid?
  • ajax
  • · Replies 7 ·
Replies
7
What angle does the string make with the vertical?
  • PerpetuallyFrustrate
  • · Replies 2 ·
Replies
2
Does the Integral Converge for p<0 in int[exp(px)]dx?
  • dan
  • · Replies 2 ·
Replies
2
Preparing for AP Physics and SAT II: Tips and Resources for Self-Study
  • Lyuokdea
  • · Replies 2 ·
Replies
2
What Is the Energy Transfer Mechanism in Waves and Sound?
  • FestiveF
  • · Replies 1 ·
Replies
1
Determine whether the truck will remain at rest
  • DervlaKennedy
  • · Replies 3 ·
Replies
3