Introductory Physics Homework Help Forum

Wave Intensity: A^2(z,t) at (15 cm, .5s)

Problem involving displacement vectors

How Does Molecular Kinetic Theory Explain the Behavior of Helium Gas Molecules?

Understanding Resonance Frequency Decrease in Oscillation Systems

One more thing with motion problem

Solution to Mass Center Problem: 3 Uniform Disks

Center of mass for disk with three circular cutouts

Can a Dam Turbine Meet a Paper Mill's Energy Needs?

How Much Electricity is Needed to Produce 1kg of Paper?

Difficulty with a basic motion problem

Centripetal acceleration and KE problem

Net electric field and magnitude

Everyday connections and other things to discuss.

Net velocity of thrown object-lost

Calculate Energy Needed to Heat 4.6 kg Water

Does wider pendulum bob shape increase air resistance?

Calculating Angular Velocity at the Midpoint of a Bar

Solving Physics Problem: Mechanics Question 4 and 6

Finding angular velocity of rod B when rod A's angular velocity is known

Muon stopping distance and Stapp sled deceleration in g units

Projectile Trajectory and Fragment Separation: Velocity, Angle, and Distance

What is the acceleration of the 1000 kg boat?

Determine Wall Thickness for 1,000 in. Aluminum Tube to Support 10-kip Load

Can a Pendulum-Spring System Achieve Linear Motion with Matching Periods?

Solve Projectile Question: Initial Velocity?

Starting my first physics class as a civil engineering major

Simply Armonic Movement and k constant

Measuring extremely high/low temperatures

How Do You Determine the Amplitude of a Spring-Mass System?

Rearranging Equation: Steps for Solving mg+ma-Mg=-Ma with Example

Stone thrown downward from building: solving the quadratic equation

Suspended in air by adding electrons

Finding Temperature Using Ideal Gas Law

Finding the Answer to Pi/4(d^2): Volume or Area?

Motion in accelerated reference frame

Calculating Radius of Curvature for Metal Bar

How Many Blades of Grass Are on a Quarter Acre of Land?

Max force up a 45° ramp and min perpendicular force to keep box at rest

Cart Propelled by Weighted Balls Down an Incline

Where Along the Y-Axis is the Electric Field Zero?

What Formula to Use for Elevator's Constant Acceleration Problem?

Electric Field and point charges problem

The atom is how many times larger in volume than its nucleus?

Solving Newtonian Problems: Deciding When to Use + or - 9.8

Finding lift force from pressure difference on airplane wings

Why does a pendulum move in a circular path?

Why does a pendulum move as if it has a mind of its own

Mass conservation in fluid mechanics

What is the Minimum Velocity for a Rod Laying Against a Wall?

How is kJ/h the same as kWh in energy measurements?

• Poll

Does frequency affect the velocity of sound waves?

How Do You Calculate Fret Placement and Overtones in Musical Instruments?

Calculating Initial Velocity to Make a 10m Basketball Shot

Volume Expansion: 15.5cm Sphere Heated from 40°C to 210°C

Finding acceleration of sailboat with 390 N north and 180 N east forces

Electric potential inside a living cell

Why does the length of a pendulum string affect its oscillation time?

What direction should the pilot head to fly northwest with wind blowing south?

Power/work questions (with inclines)

How Does Water Pressure Change with Depth?

What was the average force applied to the box in the direction of motion?

What Does 'a' Represent in a Non-Constant Charge Density Equation?

Calculating Electric Field Strength for Three Charges

How can I represent electric forces on a system with 3 charged balls?

Interesting Guitar Fret Spacing and Sound Filtering Using Tubes

Solving Sound Problems: How High & How Loud?

Period of Pendulum in Accel. Elevator

How Does Bohr's Semiclassical Approach Relate to Schrödinger's Equation?

Calculate Proportional Limit of Alloy Bar

Index of refraction find a wavelength

What is the process of creating a vacuum and how does it affect air pressure?

Question qbout uniform circular motion

Max Velocity for 1360.7kg Car Climbing 15 Degree Hill

Calculating Entropy Change of Ideal Gas

Can Electric Field Penetrate Non-Conducting Sheets?

Can Solar Sails Truly Escape the Solar System?

Unanswered Relativity Questions: Spin, Paradoxes, and Instantaneous Light?

Optics & Snell's Law: Finding Distance

Thermal expansion and keeping time

Projectile Fired at Stationary Target from Moving Base

Calculating Volume of Earth Using Radius 6.37x10^6m and Correct Sig Figs

Isothermic Work by a Gas: Linear Relationship or Integration?

Converting 0.998 g/cm³ to kg/m³ and Earth volume from radius

How to solve kinematics problems involving constant velocity and acceleration?

How Long to Travel from Venus to the Sun at Light Speed on May 17, 2006?

Calculating Force: The Physics Behind a Rifle's Shot Speed and Barrel Length

Relativity Question: Flashbulb Simultaneous Flashes by Melissa

How can I calculate the max velocity for a car climbing a 15-degree hill?

Length of a Stick Moving at Speed v in an Angle

Instantaneous Decay rate per unit Volume

Image formation in flat, converging and diverging mirrors

Question on Rotational Dynamics

E Field caused by infinite plate

Time to Get Away from Avalanache

Can Compressions and Nodes Be Compared in Wave Calculations?

Rotational Equilibrium and Dynamics -

Min and max magnitude on pointlike charges

Thermodynamics - how much heat needed to raise temperature of a lake

Calculating Equilibrium Height of 2 Cylinders

Problem involving power, mass, incline, and finding a max. velocity