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.
Why Are Polar Coordinates Essential in Solving the Ant and Rubber Band Problem?
  • · Replies 16 ·
Replies
16
Views
2K
Finding the angular acceleration of a flywheel
  • · Replies 14 ·
Replies
14
Views
3K
Question about a bicycle wheel going uphill
  • · Replies 5 ·
Replies
5
Views
2K
Question on a textbook statment on Rutherford Scattering
  • · Replies 2 ·
Replies
2
Views
2K
Standing Waves Homework: A Tuning Fork, a String and a Hanging Mass
  • · Replies 1 ·
Replies
1
Views
1K
Nuclear Power Plants - Electricity Production
  • · Replies 14 ·
Replies
14
Views
3K
Solving Spool Acceleration Problem Using Newton's Laws
  • · Replies 12 ·
Replies
12
Views
3K
Calculate the density of the material for a vibrating string
  • · Replies 1 ·
Replies
1
Views
1K
Second highest frequency in a sound pipe
  • · Replies 5 ·
Replies
5
Views
1K
Induced EMF and current for a bar sliding on a circular rail
  • · Replies 22 ·
Replies
22
Views
3K
Calculating Work and Kinetic Energy on an Inclined Plane
  • · Replies 2 ·
Replies
2
Views
3K
How Do Acceleration and Velocity Graphs Differ?
  • · Replies 21 ·
Replies
21
Views
3K
Vector Labelling | Vector Mapping Services
  • · Replies 10 ·
Replies
10
Views
1K
Elastic Ball Problem: Is Something Wrong?
  • · Replies 17 ·
Replies
17
Views
2K
Can I Combine X and Y Components in the Work Equation?
  • · Replies 5 ·
Replies
5
Views
1K
Open pipe end correction distance for waves
  • · Replies 8 ·
Replies
8
Views
3K
Solve Your Tennis Racket Problem with a Geometric Approach
  • · Replies 5 ·
Replies
5
Views
2K
Understanding the PMF of a Random Variable: A Brief Overview
  • · Replies 4 ·
Replies
4
Views
2K
Cars Collide on a Hill, Conservation of Momentum
  • · Replies 7 ·
Replies
7
Views
3K
Motion of rotating rig, find the angle variation with control rod length
  • · Replies 12 ·
Replies
12
Views
2K
Enthelpy change in isentropic condition (air-con)
  • · Replies 3 ·
Replies
3
Views
1K
Specific heat capacity aluminium
  • · Replies 4 ·
Replies
4
Views
1K
Solving for Tension: A chandelier is suspended by two chains
  • · Replies 10 ·
Replies
10
Views
3K
Understanding the Minimum Speed to Keep Carriage on Tracks in a Loop
  • · Replies 5 ·
Replies
5
Views
2K
Question about a crane and anchor
  • · Replies 5 ·
Replies
5
Views
1K
Question on pulleys force and rope pulling
  • · Replies 8 ·
Replies
8
Views
2K
Formula for calculating wavelength of sound waves in interference?
  • · Replies 1 ·
Replies
1
Views
2K
Vector Mechanics — Double Gear Rolling on a Rack
  • · Replies 8 ·
Replies
8
Views
2K
Calculating magnitude of the acceleration of two ocean liners
  • · Replies 3 ·
Replies
3
Views
1K
(Relativity) A flash of light is emitted at x1 and absorbed at x1 + l
  • · Replies 4 ·
Replies
4
Views
2K
Find the expression for Power in circuit
  • · Replies 1 ·
Replies
1
Views
1K
Calculating average acceleration during a time interval
  • · Replies 5 ·
Replies
5
Views
2K
Calculatingthe resultant gravitational force on spherical objects
  • · Replies 2 ·
Replies
2
Views
3K
How Do You Calculate the Tension in a Rope Holding a Chandelier?
  • · Replies 8 ·
Replies
8
Views
1K
How to calculate the equivalent resistance in this Circuit?
  • · Replies 33 ·
2
Replies
33
Views
4K
Order of anharmonicity of a simple pendulum
  • · Replies 4 ·
Replies
4
Views
2K
Propagation of uncertainty with tangent function?
  • · Replies 5 ·
Replies
5
Views
7K
What are the Paschen and Lyman series in the electromagnetic spectrum?
  • · Replies 3 ·
Replies
3
Views
1K
How can hydrogen gas can be made to emit photons of different energies
  • · Replies 4 ·
Replies
4
Views
1K
Unit conversions involving Pascals
  • · Replies 67 ·
3
Replies
67
Views
7K
Find the mass of this ion moving in a magnetic field
  • · Replies 2 ·
Replies
2
Views
1K
What is the work function of a metal?
  • · Replies 4 ·
Replies
4
Views
3K
Question: Solving for Accelerations in an Atwood Machine System
  • · Replies 16 ·
Replies
16
Views
3K
Heat dissipated in a Resistor-Capacitor circuit
  • · Replies 9 ·
Replies
9
Views
3K
Phase difference between 2 points on a wave
  • · Replies 8 ·
Replies
8
Views
6K
Deflection distance for an electron beam in an electric field
  • · Replies 3 ·
Replies
3
Views
2K
How can I calculate the equivalent resistance of this circuit?
  • · Replies 9 ·
Replies
9
Views
2K
Calculate the velocity when 2 progressive waves are added together
  • · Replies 6 ·
Replies
6
Views
1K
Have You Calculated the Maximum Bending Moment Yet?
  • · Replies 1 ·
Replies
1
Views
1K
Magnetic field vector using F = qV * B
  • · Replies 9 ·
Replies
9
Views
2K
Hard kinematics problem: Block pushed onto a moving conveyor belt
  • · Replies 60 ·
3
Replies
60
Views
7K
Determine the magnetic field inside and outside the cable using Ampere's law
  • · Replies 11 ·
Replies
11
Views
3K
Frequency of TV signal from EM waves
  • · Replies 2 ·
Replies
2
Views
1K
Polarization of light -- Determine the thickness of the crystal
  • · Replies 5 ·
Replies
5
Views
3K
Understanding Tension Force: A Beginner's Guide to Physics
  • · Replies 21 ·
Replies
21
Views
3K
About the constraint equations of a pulley
  • · Replies 4 ·
Replies
4
Views
3K
Calculate the current in all parts of this electric circuit
  • · Replies 21 ·
Replies
21
Views
2K
Help with uncertainty calculation
  • · Replies 1 ·
Replies
1
Views
934
Understanding a step in a Biot-Savart law problem
  • · Replies 2 ·
Replies
2
Views
1K
What is the mass of the ruler moments? (Answer: 127.04g)
  • · Replies 3 ·
Replies
3
Views
2K
Solving a Physics Problem with Mathematica: Get Help Now!
  • · Replies 1 ·
Replies
1
Views
1K
Moment of inertia of a rod bent into a square
  • · Replies 12 ·
Replies
12
Views
2K
Solving Bohr Atom Problem (Qs a-e)
  • · Replies 13 ·
Replies
13
Views
2K
Kinetic force/force/tilted plane question
  • · Replies 6 ·
Replies
6
Views
1K
What is the contact force for a 20kg object with an acceleration of 2.7?
  • · Replies 16 ·
Replies
16
Views
3K
Why Does Adiabatic Compression Yield a Negative Work Calculation?
  • · Replies 3 ·
Replies
3
Views
2K
Calculate the focal distance of the duplicate
  • · Replies 3 ·
Replies
3
Views
2K
Understanding what a dipole's charge is
  • · Replies 10 ·
Replies
10
Views
1K
Balance these nuclear equations
  • · Replies 10 ·
Replies
10
Views
2K
Specific heat of a monotomic gas
  • · Replies 7 ·
Replies
7
Views
2K
Mechanics Problem: Pushing a heavy desk across a floor
  • · Replies 9 ·
Replies
9
Views
1K
Find the Perfect Vacation Destination
  • · Replies 2 ·
Replies
2
Views
825
Where Is the Center of Mass in a Triangle with Unequal Masses?
  • · Replies 4 ·
Replies
4
Views
1K
Oscillating Spring in a Frictionless pulley system
  • · Replies 23 ·
Replies
23
Views
2K
Problem about compound optics in microscopes
  • · Replies 11 ·
Replies
11
Views
2K
3 concentric conducting spheres, the outer one connected to ground
  • · Replies 4 ·
Replies
4
Views
2K
Circular motion and g forces in rollercoaster
  • · Replies 15 ·
Replies
15
Views
2K
Equivalent capacitance odd circuit
  • · Replies 11 ·
Replies
11
Views
6K
Finding the Average Acceleration
  • · Replies 12 ·
Replies
12
Views
3K
Question about finding the amplitude of this circular wavefront
  • · Replies 22 ·
Replies
22
Views
3K
Magnetic field Cancellation in AC wires (How?)
  • · Replies 5 ·
Replies
5
Views
2K
Understanding Average Speed in Graph Analysis
  • · Replies 25 ·
Replies
25
Views
3K
Throwing a baseball while standing on an Asteroid
  • · Replies 5 ·
Replies
5
Views
2K
Projectile question — Cannonball fired over a hill
  • · Replies 5 ·
Replies
5
Views
2K
Solving for λ, a, and Vmax: An Analysis of Energy Balance and SHM
  • · Replies 21 ·
Replies
21
Views
4K
What are the correct conditions for Simple Harmonic Motion?
  • · Replies 2 ·
Replies
2
Views
2K
How much force does a moving car exert on to the road?
  • · Replies 13 ·
Replies
13
Views
4K
5 charges placed at 5 vertices of a regular hexagon
  • · Replies 7 ·
Replies
7
Views
2K
Using a rope to pull a box across a floor (problem with friction)
  • · Replies 2 ·
Replies
2
Views
2K
Will the induced electric field be circumferential?
  • · Replies 25 ·
Replies
25
Views
2K
Interpreting pie and bar charts
  • · Replies 1 ·
Replies
1
Views
905
Maximum Distance a Projectile Moves Up an Inclined Plane
  • · Replies 7 ·
Replies
7
Views
3K
Forces on spheres in a cylinder
  • · Replies 4 ·
Replies
4
Views
3K
What other information is needed to solve this equation involving b?
  • · Replies 13 ·
Replies
13
Views
2K
Work-energy principle for a block fired up a vertical track
  • · Replies 7 ·
Replies
7
Views
1K
Thermodynamics energy balance for control volume
  • · Replies 1 ·
Replies
1
Views
2K
Electrostatics question (Work and Potential)
  • · Replies 9 ·
Replies
9
Views
2K
Is 51 micro joules the maximum kinetic energy of this pendulum?
  • · Replies 4 ·
Replies
4
Views
2K
Time period of a mass spring system
  • · Replies 5 ·
Replies
5
Views
3K
Transfer characteristic of this circuit
  • · Replies 3 ·
Replies
3
Views
1K