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.
How Does Charge Distribution Affect Electric Field in Nested Cylindrical Shells?
  • · Replies 14 ·
Replies
14
Views
16K
IB Physics Help: Solving for Magnetic Field in TV Picture Tube
  • · Replies 2 ·
Replies
2
Views
2K
How Much Force Does Wind Resistance Exert on a Vehicle-Mounted Sign?
  • · Replies 2 ·
Replies
2
Views
2K
Help visualizing this problem O.o Heat Prob
  • · Replies 2 ·
Replies
2
Views
3K
Help with Two Problems: Table Overturn & Cube Sliding/Tipping
  • · Replies 2 ·
Replies
2
Views
3K
Need help on a partial derivative problem
  • · Replies 5 ·
Replies
5
Views
2K
Calculating Spacing Using Ideal Gas Law
  • · Replies 2 ·
Replies
2
Views
4K
How Can I Quickly Solve Basic Physics Problems for My Course?
  • · Replies 2 ·
Replies
2
Views
2K
A bunch of MasteringPhysics problems that I don't understand
  • · Replies 2 ·
Replies
2
Views
14K
Calculating Electric Field Energy
  • · Replies 4 ·
Replies
4
Views
2K
Help with Determining Planet Density from Orbital Period
  • · Replies 2 ·
Replies
2
Views
3K
Estimating Speed and Distance for Traffic Light Troubles
  • · Replies 4 ·
Replies
4
Views
6K
What is the Electric Field for a Charged Sheet at Different Distances?
  • · Replies 3 ·
Replies
3
Views
8K
Very fast right hand rule question
  • · Replies 3 ·
Replies
3
Views
8K
Torque, Force, magnetic moment ()
  • · Replies 8 ·
Replies
8
Views
4K
Simultaneous non-linear equations
  • · Replies 8 ·
Replies
8
Views
8K
What Is the Integral of Functions Like x^x, e^[x^2], and cos[x]^[sin[x]?
  • · Replies 5 ·
Replies
5
Views
2K
Calculate Fringe Separation in Fabry-Perot Etalon
  • · Replies 4 ·
Replies
4
Views
3K
Converting kcal to joules: A simple guide
  • · Replies 3 ·
Replies
3
Views
62K
Calculating Horizontal Force of Toy Car Wheels
  • · Replies 2 ·
Replies
2
Views
3K
Why Doesn't Right Hand Rule #2 Work for This Capacitor's Electric Field?
  • · Replies 4 ·
Replies
4
Views
6K
Need help with Fluid Dynamics Problem
  • · Replies 2 ·
Replies
2
Views
2K
Some general questions on elements
  • · Replies 3 ·
Replies
3
Views
2K
How Do Magnetic Fields Orient Around Perpendicular Current-Carrying Wires?
  • · Replies 7 ·
Replies
7
Views
12K
Help Bowling ball slides off table
  • · Replies 14 ·
Replies
14
Views
3K
Odd equation relating to springs and SHM
  • · Replies 2 ·
Replies
2
Views
2K
Solving a Magnetic Field Problem: Find Maximum Force
  • · Replies 2 ·
Replies
2
Views
2K
Can anyone help w/ this fission problem?
  • · Replies 3 ·
Replies
3
Views
6K
Water interference physics help
  • · Replies 6 ·
Replies
6
Views
3K
Circular motion and velocity of car
  • · Replies 2 ·
Replies
2
Views
7K
Find the equation of the tangent line to the graph
  • · Replies 3 ·
Replies
3
Views
2K
Understanding the Delicate Balance Between Forces in Nuclear Physics
  • · Replies 2 ·
Replies
2
Views
4K
How Do You Calculate Velocity from a Position-Time Equation?
  • · Replies 4 ·
Replies
4
Views
2K
Calculate Joules Used by 100W Light Bulb in 2 Hours
  • · Replies 3 ·
Replies
3
Views
2K
Estimating Distance Between Solutions to ODE
  • · Replies 4 ·
Replies
4
Views
2K
General information about a Pendulum
  • · Replies 3 ·
Replies
3
Views
7K
.Solving the Physics of a Seesaw Catapult
  • · Replies 121 ·
5
Replies
121
Views
36K
Answer Altitude Questions on I.S.S., S.S., & Tracking Stations C & D
  • · Replies 9 ·
Replies
9
Views
3K
Solve Electron Velocity to Find Initial Energy State
  • · Replies 6 ·
Replies
6
Views
4K
Derivative & Antiderivative - Graphical Analysis
  • · Replies 6 ·
Replies
6
Views
7K
Is It Possible to Prove the Conservativity of These Force Fields?
  • · Replies 23 ·
Replies
23
Views
9K
Total Charge what? potential by line inter
  • · Replies 6 ·
Replies
6
Views
3K
Maximizing Capacitance: Series vs. Parallel Methods for Battery Connections
  • · Replies 16 ·
Replies
16
Views
3K
How Much is the Rope Extended When the Circus Performer Hangs at Rest?
  • · Replies 2 ·
Replies
2
Views
5K
Acceleration of a rotating system
  • · Replies 6 ·
Replies
6
Views
4K
Zero to the Power of Eight: 0 or 1?
  • · Replies 3 ·
Replies
3
Views
2K
Does the Spectrum Change Underwater When Exposed to Light?
  • · Replies 8 ·
Replies
8
Views
6K
Geosynchronous Orbit and Radius Calculation for Satellite | 8 Earth Radii
  • · Replies 3 ·
Replies
3
Views
10K
Explaining Nuclear Force Saturation: The Role of Helium Nucleus Stability
  • · Replies 2 ·
Replies
2
Views
10K
Please,help with energy and momentum conservation
  • · Replies 2 ·
Replies
2
Views
2K
What is the Buoyant Force on a Submerged Ping-Pong Ball?
  • · Replies 2 ·
Replies
2
Views
5K
Find the final temperature of this system
  • · Replies 6 ·
Replies
6
Views
24K
Can we say that living things have mechanical energy?
  • · Replies 18 ·
Replies
18
Views
4K
Standing Waves help 30 mins left.
  • · Replies 4 ·
Replies
4
Views
2K
Does the Sequence Converge Uniformly Across Different Intervals?
  • · Replies 6 ·
Replies
6
Views
4K
Charged particles moving through electric fields
  • · Replies 10 ·
Replies
10
Views
4K
Kinematics: Calculate Time & Velocity of Bomb from 4000m Altitude
  • · Replies 2 ·
Replies
2
Views
2K
Physics woes - online course - Rotation
  • · Replies 5 ·
Replies
5
Views
3K
Find the minum pts. in a trig equation
  • · Replies 6 ·
Replies
6
Views
2K
How Do You Calculate the Final Temperature in a Mixed Water and Ice System?
  • · Replies 4 ·
Replies
4
Views
4K
Find angle of a triangle with given sides
  • · Replies 4 ·
Replies
4
Views
2K
Integration by Parts: What's the Sign of that Last Term?
  • · Replies 2 ·
Replies
2
Views
2K
Plotting Derivative Graphs: How to Find f'(x)
  • · Replies 19 ·
Replies
19
Views
4K
Solving ODE: Need Help and Ideas
  • · Replies 6 ·
Replies
6
Views
4K
Converting Joules to Quanta: Assistance Needed
  • · Replies 14 ·
Replies
14
Views
8K
Find the pressure p_1 due to a single particle
  • · Replies 7 ·
Replies
7
Views
2K
AC - frequency affect on RC voltage
  • · Replies 3 ·
Replies
3
Views
16K
What Phases are Present at Equilibrium in a Water and Ice Mixture?
  • · Replies 2 ·
Replies
2
Views
17K
How Do You Calculate Mass and Center of Mass for a Cone?
  • · Replies 13 ·
Replies
13
Views
3K
Solving Corrosion & Heat Transfer Problems on Steel Vat Plated with Zinc
  • · Replies 2 ·
Replies
2
Views
2K
Yay, here's a fun one computational physics, but I already did the comp part
  • · Replies 1 ·
Replies
1
Views
2K
(LINALG) : Nullspace of transpose : N(A^T)
  • · Replies 2 ·
Replies
2
Views
10K
Quantum Numbers for a couple of electrons Help needed
  • · Replies 3 ·
Replies
3
Views
2K
Demonstrating Kepler's Second Law - Equal Areas Swept Out in Equal Times
  • · Replies 6 ·
Replies
6
Views
3K
What Can We Infer About Vector w Given Its Relation to u and v?
  • · Replies 7 ·
Replies
7
Views
3K
How Do You Calculate the Slipping Angle of a Ladder Using Torque and Friction?
  • · Replies 15 ·
Replies
15
Views
4K
Permutation question (math) [ ]
  • · Replies 10 ·
Replies
10
Views
3K
How Do I Solve These Systems of Differential Equations with Specific Conditions?
  • · Replies 2 ·
Replies
2
Views
2K
Relative speed: Horizontal distance travelled in a collision
  • · Replies 3 ·
Replies
3
Views
4K
Find the following determinants
  • · Replies 2 ·
Replies
2
Views
2K
Bowling ball with air resistance problem
  • · Replies 3 ·
Replies
3
Views
7K
Understanding the Inverse Square Law in Planetary Motion
  • · Replies 26 ·
Replies
26
Views
7K
Understanding Regression: Calculating Proportion of Change with r Values
  • · Replies 2 ·
Replies
2
Views
2K
Understanding Magnetism: Relating Magnetic Forces to Charged Particle Beams"
  • · Replies 2 ·
Replies
2
Views
3K
Physics 2 exam tomorrow. Need help with a couple more problems and im good
  • · Replies 6 ·
Replies
6
Views
3K
Rollercoaster ride problem, involving centripetal accelaration
  • · Replies 7 ·
Replies
7
Views
3K
Resistance change under temperature
  • · Replies 6 ·
Replies
6
Views
9K
Converting W²/NJHz to MKS: Step-by-Step Guide
  • · Replies 38 ·
2
Replies
38
Views
6K
Electromagnetism and hydraulics
  • · Replies 2 ·
Replies
2
Views
2K
Answer A or D for Calc Integration Question
  • · Replies 8 ·
Replies
8
Views
2K
How to Design a Concise Electrodynamics Homepage and Earn Extra Points?
  • · Replies 2 ·
Replies
2
Views
2K
Are there any composite numbers in this equation?
  • · Replies 13 ·
Replies
13
Views
5K
Atomic Mass Unit: Converting to kgs
  • · Replies 7 ·
Replies
7
Views
23K
Wave Tank Refraction: Does Depth Affect Refraction?
  • · Replies 5 ·
Replies
5
Views
2K
Speed of light in different media
  • · Replies 2 ·
Replies
2
Views
7K
How Do You Calculate the Lowest Energy of 10 Electrons in a 3D Quantum Box?
  • · Replies 7 ·
Replies
7
Views
3K
Electric forces and electric fields
  • · Replies 2 ·
Replies
2
Views
3K
Quick chem. questionacids/bases
  • · Replies 4 ·
Replies
4
Views
9K
De Broglie Wavelength and Relativistic Momentum
  • · Replies 3 ·
Replies
3
Views
3K
Did I Calculate the Molecular Volume Fraction Correctly?
  • · Replies 4 ·
Replies
4
Views
5K