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.
Solve Physics Problem: 500m from Safety of Space Craft, 11.32min Air Left
  • antiflag403
  • · Replies 5 ·
Replies
5
Calculate charge on a body(in Coulombs)
  • HurricaneJesus
  • · Replies 5 ·
Replies
5
When to use Tsin(theta)=mv^2/r and Tsin(theta)=mg?Please help me out
  • saltrock
  • · Replies 2 ·
Replies
2
Questions concerning, logs, rational funtions, and trig.
  • EasyStyle4747
  • · Replies 3 ·
Replies
3
How do I solve a surface charge problem for a cylindrical drum?
  • pulser45
  • · Replies 2 ·
Replies
2
Solve Momentum Question: Mass 33 kg, Velocity 4.0 m/s
  • antiflag403
  • · Replies 9 ·
Replies
9
Vector Element Problem: Solving for Components of C in A - B + 3C = 0
  • ramin86
  • · Replies 3 ·
Replies
3
How Long Was the Kangaroo in the Air?
  • Amber
  • · Replies 9 ·
Replies
9
How to Calculate Displacement and Speed for a Motorboat Journey in Excel?
  • swingkids
  • · Replies 4 ·
Replies
4
Understanding Vector Addition: 2 Forces with Same Magnitude F
  • cb
  • · Replies 2 ·
Replies
2
How Long for an Electron to Move 1cm in a Silver Wire?
  • GreenDinos
  • · Replies 2 ·
Replies
2
Calculating Tension in a Telephone Wire: Physics Problem Help
  • sisigsarap
  • · Replies 6 ·
Replies
6
A Quantum question came with The GRE
  • quantumworld
  • · Replies 3 ·
Replies
3
Simple physics(acceleration) problem
  • ucdawg12
  • · Replies 6 ·
Replies
6
Easiest way to solve projectile motion problems?
  • EaGlE
  • · Replies 2 ·
Replies
2
Proving U1=U2 When U1, U2, W are Subspaces of V
  • gravenewworld
  • · Replies 4 ·
Replies
4
Help with Forces, Friction and Negative Velocity
  • buffgilville
  • · Replies 2 ·
Replies
2
How Do You Calculate the Components of a Superhero's Displacement?
  • motionman04
  • · Replies 25 ·
Replies
25
How can I effectively prove that f(L) = L in this problem?
  • DivGradCurl
  • · Replies 2 ·
Replies
2
Finding the angle of a BANKED curve
  • rocky811
  • · Replies 4 ·
Replies
4
Solving Constants a & b for Electric Field E - Curl & Divergence
  • galipop
  • · Replies 8 ·
Replies
8
Calculating the Number of Waves Passing a Boat in 55 Seconds: Physics 11
  • puregoodboi
  • · Replies 9 ·
Replies
9
Factorising x^3 + 216 to Include (x + 6)
  • Alkatran
  • · Replies 4 ·
Replies
4
How to get the horizontal asymptote.
  • UrbanXrisis
  • · Replies 19 ·
Replies
19
How Far Will a Bungee Cord Stretch During a Jump?
  • coglon
  • · Replies 3 ·
Replies
3
Trouble with some vector problems
  • ramin86
  • · Replies 5 ·
Replies
5
Projectile Motion Analysis: Solving for Victim's Fall from 4th Story Window
  • Parth Dave
  • · Replies 2 ·
Replies
2
Help with 2 simple probability probs
  • Juntao
  • · Replies 7 ·
Replies
7
Monotonic Sequence Theorem Question
  • DivGradCurl
  • · Replies 2 ·
Replies
2
Calculating Average Velocity with 3 Sets of Numbers - A Simple Guide
  • kimikims
  • · Replies 5 ·
Replies
5
How Does Gravitational Force Vary Between Two Planets with Identical Radii?
  • pinky2468
  • · Replies 4 ·
Replies
4
How do I calculate the tension and speed of a tether ball on a pole?
  • TraceBusta
  • · Replies 11 ·
Replies
11
Find the magnitude of the trucks horizontal component of displacement
  • kimikims
  • · Replies 2 ·
Replies
2
Find Coefficient of Friction (μ) on Cylinder with Rope and Cat/Mice Forces
  • Super_Leunam
  • · Replies 2 ·
Replies
2
Complex Analysis: Nonlinear system
  • arunma
  • · Replies 4 ·
Replies
4
What Is the Net Force on Each Side of a Heated Sealed Box?
  • jin
  • · Replies 2 ·
Replies
2
Low Level Physics Problem 1D Motion
  • Maskkkk
  • · Replies 6 ·
Replies
6
How do I solve for r(theta) in central force motion with r''=(k^2)*r?
  • DarkEternal
  • · Replies 2 ·
Replies
2
Main Operator in Formula: Tribar or ~?
  • steersman
  • · Replies 5 ·
Replies
5
Can Microsoft Word or Excel Set Up Hot Keys for Greek Symbols and Subscripts?
  • Whatupdoc
  • · Replies 9 ·
Replies
9
What is the Acceleration and Direction of an Elevator Based on Scale Reading?
  • Soaring Crane
  • · Replies 2 ·
Replies
2
How to Find the Coefficient of Friction for a Pulled Sled?
  • pinky2468
  • · Replies 8 ·
Replies
8
Solving Mutually Perpendicular Vector Components
  • CinderBlockFist
  • · Replies 13 ·
Replies
13
Lots of Trouble With Free-Fall
  • evilempire
  • · Replies 4 ·
Replies
4
Helicopter rotor has four blades
  • Whatupdoc
  • · Replies 2 ·
Replies
2
Density Calculations with Examples: Finding Density from Mass and Volume
  • faisal
  • · Replies 2 ·
Replies
2
Possible that a fabric can be used as a diffraction grating
  • franz32
  • · Replies 2 ·
Replies
2
Normal force/Static & Kinetice Friction
  • pinky2468
  • · Replies 5 ·
Replies
5
Help! Understanding Torque on a Door
  • jazjackson12
  • · Replies 4 ·
Replies
4
Help With Proving Peskin and Schroeder Eq. 2.33
  • Norman
  • · Replies 3 ·
Replies
3
Probability: Arrangements in Circle
  • futb0l
  • · Replies 2 ·
Replies
2
Why Does Cutting the String Change the Tension Ratio in a Pendulum?
  • daveed
  • · Replies 2 ·
Replies
2
Electricity & Magnetism Tutorials - Need Help with Gauss's Law
  • SpatialVacancy
  • · Replies 2 ·
Replies
2
Solving Projectile Motion: Finding Initial Velocity and Distance
  • physics_challenged
  • · Replies 5 ·
Replies
5
Can Two Vehicles Avoid Collision in a Wet Tunnel?
  • 3.14159265358979
  • · Replies 5 ·
Replies
5
Solving Addition of Forces Involving Adults and Child
  • underthebridge
  • · Replies 10 ·
Replies
10
Solving Velocity Problems on the Moon
  • member 5645
  • · Replies 2 ·
Replies
2
What is the magnitude of the car's displacement
  • Catgirl-Pink
  • · Replies 2 ·
Replies
2
How Do You Solve a Projectile Motion Problem in Physics?
  • quality101
  • · Replies 2 ·
Replies
2
Simple question about writing a log-how does the root go turn to divison?
  • singleton
  • · Replies 2 ·
Replies
2
What Is the Electric Field Near Charged Objects?
  • kristi.lynn
  • · Replies 5 ·
Replies
5
Calculating Force and Acceleration in a Bucket Pulley System
  • Fused
  • · Replies 15 ·
Replies
15
Solve a Physics Problem: Normal Force Calculation for a 38.0kg and 17.0kg Box
  • lmf22
  • · Replies 3 ·
Replies
3
Calculating 3-D Vectors: Mountain Summit from Base Camp
  • physicsss
  • · Replies 7 ·
Replies
7
Calc II substitution integration
  • kdinser
  • · Replies 7 ·
Replies
7
Need help on designs of Fettucini Bridge, by Thursday
  • RUP2006
  • · Replies 2 ·
Replies
2
Equation of a line from Parametric equations
  • Spectre32
  • · Replies 3 ·
Replies
3
Balancing 3 Forces - Finding Ta & Tb
  • Electro
  • · Replies 3 ·
Replies
3
Solving the Traffic Light Overtake Puzzle
  • tumbler19
  • · Replies 2 ·
Replies
2
To Swim From A to B, U_s = 1.35 km/h
  • COCoNuT
  • · Replies 8 ·
Replies
8
Unit Circle & Trig: Explaining Why sin(t+2pi)=sin t
  • haribol
  • · Replies 10 ·
Replies
10
Man Throws Rock Off Cliff - Solving Physics Problem
  • Monsu
  • · Replies 7 ·
Replies
7
Average velocity of jumping into car
  • tony873004
  • · Replies 4 ·
Replies
4
Equation of Perpendicular Line at Origin
  • Przybysz
  • · Replies 2 ·
Replies
2
Help with Simple Problem: Match Objects to Size Scales
  • Alkatran
  • · Replies 3 ·
Replies
3
How Do You Calculate Work Done by a Force Field Along Different Paths?
  • ossito_the-diracian
  • · Replies 2 ·
Replies
2
How Does Integration by Parts Simplify \(\int 8x^2 \cos(2x) \, dx\)?
  • Whatupdoc
  • · Replies 7 ·
Replies
7
Find x0 in Cosinus and Sinus Equations
  • Dr-NiKoN
  • · Replies 13 ·
Replies
13
Magnetostatic Problems: Calculating Inductance and Loop Internal Inductance
  • kelvintc
  • · Replies 3 ·
Replies
3
Understanding Significant Figures in Math
  • Caldus
  • · Replies 11 ·
Replies
11
Plot the lines of the electric field between a small point charge
  • galipop
  • · Replies 4 ·
Replies
4
Calculus-Volume of tetrahedron and cross product
  • GingerBread27
  • · Replies 2 ·
Replies
2
How Do You Calculate the Average Acceleration of a Dragster?
  • Omid
  • · Replies 6 ·
Replies
6
Finding the smallest angle between Vectors
  • ppacc
  • · Replies 2 ·
Replies
2
Freefall Acceleration of a Raindrop
  • VinnyCee
  • · Replies 3 ·
Replies
3
Solving Partial Fractions Integrals
  • Whatupdoc
  • · Replies 10 ·
Replies
10
How Does Projectile Motion Determine Firefighting Hose Angles?
  • EaGlE
  • · Replies 2 ·
Replies
2
ANSWER: c. it has the same centripetal acceleration as car A.
  • Shay10825
  • · Replies 21 ·
Replies
21
How Does Potential Energy from Lightning Accelerate a Car?
  • alonzo
  • · Replies 2 ·
Replies
2
Finding Angle Between Vectors: Urgent Problem
  • Bertuzzi
  • · Replies 8 ·
Replies
8
Can Velocity Reverse Direction with Constant Acceleration?
  • spdrxc
  • · Replies 2 ·
Replies
2
What are some recommended physics programs for TI calculators?
  • iamhumble
  • · Replies 4 ·
Replies
4
Gravity force on Jupiter problem
  • Whatupdoc
  • · Replies 5 ·
Replies
5
What is the value of this distance up the slope?
  • cdhotfire
  • · Replies 27 ·
Replies
27
Solve Physics Question: Force, Mass, Angle, Displacement & Friction
  • punjabi_monster
  • · Replies 10 ·
Replies
10
How to Calculate Error in a Pendulum Clock at Different Temperatures"
  • squanto
  • · Replies 2 ·
Replies
2
Circuits 1 ,hard proplem for me
  • tinhnho
  • · Replies 4 ·
Replies
4
How Fast Does a Box Travel After Being Pulled with Force and Friction?
  • punjabi_monster
  • · Replies 3 ·
Replies
3
How Is Free-Fall Acceleration Determined Using Time Intervals and Distance?
  • GingerBread27
  • · Replies 2 ·
Replies
2
How Do You Determine Scalars a and b from Vectors A, B, and C?
  • Dorita
  • · Replies 5 ·
Replies
5