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High School Terminal velocity for a bullet

Feb 26, 2004 · Replies 2 · Feb 26, 2004

Replies: 2

Views: 20K

Undergrad How do I find the man's speed when depressing the platform 0.120 m?

Feb 24, 2004 · Replies 11 · Feb 25, 2004

Replies: 11

Views: 9K

High School Welcome Paul Ask Your Physics 12 Questions Here

Feb 23, 2004 · Replies 7 · Feb 25, 2004

Replies: 7

Views: 12K

Undergrad Building a Rube Golberg Machine: Ideas Needed

Feb 23, 2004 · Replies 5 · Feb 24, 2004

Replies: 5

Views: 3K

High School Designing a Solar-Powered Water Purification Device

Feb 16, 2004 · Replies 13 · Feb 24, 2004

Replies: 13

Views: 3K

Undergrad Solving sec^-1 in Horizontal Displacement Equation

Feb 21, 2004 · Replies 6 · Feb 23, 2004

Replies: 6

Views: 10K

High School Understanding the Difference Between Deceleration and Deceleration Force

Feb 22, 2004 · Replies 2 · Feb 23, 2004

Replies: 2

Views: 2K

Graduate Simplifying Equations of Motion for a Bead Sliding on a Parabolic Wire

Feb 22, 2004 · Replies 5 · Feb 23, 2004

Replies: 5

Views: 8K

Graduate Contrast quantum mechanics with general relativity

Feb 15, 2004 · Replies 2 · Feb 22, 2004

Replies: 2

Views: 3K

Undergrad Enhancing Ball Mass in Air Jet Experiments: Tips and Techniques

Feb 22, 2004 · Replies 5 · Feb 22, 2004

Replies: 5

Views: 2K

High School The Physics of Sliding Doors: Forces in Balance

Feb 21, 2004 · Replies 2 · Feb 22, 2004

Replies: 2

Views: 3K

Undergrad Mechanical energy of hanging block

Feb 17, 2004 · Replies 1 · Feb 21, 2004

Replies: 1

Views: 5K

High School Why does a car over turn outwards when turning at high speed?

Feb 20, 2004 · Replies 3 · Feb 21, 2004

Replies: 3

Views: 11K

Graduate What is the significance of harmonics in the universe?

Feb 12, 2004 · Replies 15 · Feb 19, 2004

Replies: 15

Views: 8K

Graduate Could Gravi Balls Provide Evidence for Graviton Theory?

Feb 19, 2004 · Replies 1 · Feb 19, 2004

Replies: 1

Views: 2K

Undergrad Solving the Disk Motion Problem: Initial Velocity and Angular Velocity

Feb 4, 2004 · Replies 5 · Feb 19, 2004

Replies: 5

Views: 8K

Undergrad Equation for Floating Ball in Air Jet: F=ma

Feb 18, 2004 · Replies 2 · Feb 19, 2004

Replies: 2

Views: 2K

High School Understanding the Effects of Rotation on Falling Objects

Feb 18, 2004 · Replies 1 · Feb 19, 2004

Replies: 1

Views: 3K

High School Which Cantilever Design Is More Efficient for a School Project?

Feb 17, 2004 · Replies 5 · Feb 18, 2004

Replies: 5

Views: 7K

Undergrad Analytical Mechanics - Physics Student in Turkey

Feb 17, 2004 · Replies 1 · Feb 17, 2004

Replies: 1

Views: 3K

Undergrad A-Level Investigation into Bernoulli Principle

Feb 17, 2004 · Replies 1 · Feb 17, 2004

Replies: 1

Views: 4K

Undergrad Rod Rotational Motion Question

Feb 13, 2004 · Replies 24 · Feb 17, 2004

Replies: 24

Views: 6K

High School Block and tackle system formula

Feb 16, 2004 · Replies 2 · Feb 17, 2004

Replies: 2

Views: 11K

Undergrad Does Shaft Flex Affect Distance in Golf Swings?

Feb 14, 2004 · Replies 3 · Feb 15, 2004

Replies: 3

Views: 5K

High School Original formulation of Newton’s principles

Feb 14, 2004 · Replies 4 · Feb 15, 2004

Replies: 4

Views: 2K

Graduate Understanding Newton's Second Law for Rockets: F=dp/dt Explained

Feb 10, 2004 · Replies 6 · Feb 15, 2004

Replies: 6

Views: 24K

Undergrad Is Momentum Conserved in All Directions?

Feb 3, 2004 · Replies 8 · Feb 15, 2004

Replies: 8

Views: 8K

Undergrad Hamiltonian and Lagrangian Mechanics: Online Resource

Feb 14, 2004 · Replies 2 · Feb 14, 2004

Replies: 2

Views: 3K

High School Hypothetical Acceleration of a Rock in Outer Space: Will it Continue Forever?

Feb 14, 2004 · Replies 4 · Feb 14, 2004

Replies: 4

Views: 3K

Undergrad Fluid Dynamics: Air Rising from Water Questions

Feb 13, 2004 · Replies 6 · Feb 14, 2004

Replies: 6

Views: 12K

Undergrad Discover the G Forces of Braking from 290mph in My Grand Turismo 3 Car

Feb 13, 2004 · Replies 4 · Feb 13, 2004

Replies: 4

Views: 4K

Old onefallin through the earth

Feb 12, 2004 · Replies 21 · Feb 13, 2004

Replies: 21

Views: 4K

Undergrad Horizontal Distance of Hammer Dropped from Roof: Solved

Feb 13, 2004 · Replies 8 · Feb 13, 2004

Replies: 8

Views: 8K

Undergrad What causes rotational motion and condensation on the wings of sprint cars?

Feb 10, 2004 · Replies 5 · Feb 13, 2004

Replies: 5

Views: 5K

Undergrad Projectile Physics: Designing Weapons for Realism

Jan 30, 2004 · Replies 10 · Feb 13, 2004

Replies: 10

Views: 3K

Undergrad Simple car acceleration formula?

Feb 11, 2004 · Replies 5 · Feb 12, 2004

Replies: 5

Views: 23K

Undergrad Kinetic Energy of Ball Thrown by Woman on Train

Feb 11, 2004 · Replies 4 · Feb 12, 2004

Replies: 4

Views: 9K

High School Building a Straw & Tape Contraption to Save Eggs

Feb 11, 2004 · Replies 3 · Feb 11, 2004

Replies: 3

Views: 5K

Undergrad Why all forces are subjected 1/r^2?

Feb 11, 2004 · Replies 8 · Feb 11, 2004

Replies: 8

Views: 2K

Undergrad How can I solve for W in this tricky statics problem without exceeding 1050N?

Feb 11, 2004 · Replies 3 · Feb 11, 2004

Replies: 3

Views: 3K

High School What is the Equation for Work?

Feb 11, 2004 · Replies 1 · Feb 11, 2004

Replies: 1

Views: 4K

High School Cylindrical Tank Height Calculation (1587kg, 3.2m)

Feb 11, 2004 · Replies 4 · Feb 11, 2004

Replies: 4

Views: 5K

Undergrad Is Kinetic Energy Conserved in Inelastic Collisions?

Feb 11, 2004 · Replies 1 · Feb 11, 2004

Replies: 1

Views: 4K

High School What are some good equations to find acceleration?

Jan 30, 2004 · Replies 4 · Feb 11, 2004

Replies: 4

Views: 2K

Graduate Predicting Angular Momentum in Elastic Collisions

Feb 10, 2004 · Replies 2 · Feb 10, 2004

Replies: 2

Views: 4K

Graduate Virtual Displacement: Analyzing Langrange Equations

Feb 9, 2004 · Replies 1 · Feb 10, 2004

Replies: 1

Views: 6K

High School What is the equation for finding momentum?

Feb 10, 2004 · Replies 2 · Feb 10, 2004

Replies: 2

Views: 2K

Undergrad Does Doubling the Number of Flutes Double the Sound Intensity?

Feb 9, 2004 · Replies 2 · Feb 10, 2004

Replies: 2

Views: 17K

Undergrad A Simple Pendulum and Friction problem

Feb 9, 2004 · Replies 1 · Feb 9, 2004

Replies: 1

Views: 9K

High School How Does Momentum Define Motion in Physics?

Feb 8, 2004 · Replies 3 · Feb 9, 2004

Replies: 3

Views: 2K

Graduate The framework to the theory of everything

Feb 8, 2004 · Replies 3 · Feb 8, 2004

Replies: 3

Views: 3K

Undergrad Bernoulli Principle: Intuitive Explanation?

Feb 7, 2004 · Replies 1 · Feb 8, 2004

Replies: 1

Views: 4K

High School What would be the best equation to find momentum?

Feb 8, 2004 · Replies 5 · Feb 8, 2004

Replies: 5

Views: 4K

Undergrad Inelastic Collisions: Kinetic Energy Loss Explained

Feb 8, 2004 · Replies 1 · Feb 8, 2004

Replies: 1

Views: 3K

High School Force of Friction: Help on 15kg, 20 Degrees, 20N

Feb 8, 2004 · Replies 1 · Feb 8, 2004

Replies: 1

Views: 2K

High School Set up an infinite row of dominos and knock over the first one

Dec 10, 2003 · Replies 5 · Feb 7, 2004

Replies: 5

Views: 9K

Undergrad What is the potential difference between the plates?

Feb 6, 2004 · Replies 4 · Feb 7, 2004

Replies: 4

Views: 5K

Undergrad Find the average force the carpet exerts

Feb 6, 2004 · Replies 3 · Feb 7, 2004

Replies: 3

Views: 4K

Undergrad Solving Collison Equations: Step-by-Step Guide

Feb 5, 2004 · Replies 1 · Feb 6, 2004

Replies: 1

Views: 3K

High School Help with minor car crash physics

Feb 6, 2004 · Replies 1 · Feb 6, 2004

Replies: 1

Views: 3K

High School Calculating Momentum & Friction Force

Feb 5, 2004 · Replies 2 · Feb 6, 2004

Replies: 2

Views: 3K

High School Ways to find force normal in relation to force of friction

Feb 5, 2004 · Replies 2 · Feb 6, 2004

Replies: 2

Views: 2K

Graduate Can a Gravity Machine Harness Energy in a Frictionless Universe?

Feb 3, 2004 · Replies 9 · Feb 5, 2004

Replies: 9

Views: 5K

High School Water evaporating from my hand in the cold.

Feb 3, 2004 · Replies 6 · Feb 4, 2004

Replies: 6

Views: 4K

Graduate Physicists build world's smallest motor Berkeley News

Jul 25, 2003 · Replies 2 · Feb 4, 2004

Replies: 2

Views: 8K

High School Rate of change of acceleration - basic

Feb 4, 2004 · Replies 8 · Feb 4, 2004

Replies: 8

Views: 10K

Graduate What Is Energy Really?

Feb 4, 2004 · Replies 2 · Feb 4, 2004

Replies: 2

Views: 2K

Undergrad Why use prop planes to hunt hurricanes?

Sep 15, 2003 · Replies 7 · Feb 4, 2004

Replies: 7

Views: 13K

High School Momentum Equation: Simple Formula for Finding Object Momentum

Feb 3, 2004 · Replies 2 · Feb 4, 2004

Replies: 2

Views: 2K

High School What is the force of gravity on Earth and how does it vary?

Feb 3, 2004 · Replies 2 · Feb 3, 2004

Replies: 2

Views: 2K

High School Collar Physics: An Excursion to a Rock Gym

Feb 2, 2004 · Replies 1 · Feb 3, 2004

Replies: 1

Views: 4K

Graduate Predicting Pendulum Position: Differential Equations in C++ Code

Jan 28, 2004 · Replies 62 · Feb 3, 2004

3

Replies: 62

Views: 15K

Undergrad Gravity with Galileo's inclined plane?

Feb 1, 2004 · Replies 10 · Feb 2, 2004

Replies: 10

Views: 14K

Undergrad If a rock is dropped off a sea cliff

Oct 6, 2003 · Replies 14 · Feb 2, 2004

Replies: 14

Views: 4K

High School Understanding Modulation of Sound Waves to AM/FM

Feb 1, 2004 · Replies 2 · Feb 1, 2004

Replies: 2

Views: 12K

Undergrad How Far and Fast Must a Receiver Run to Catch a Football?

Jan 31, 2004 · Replies 1 · Jan 31, 2004

Replies: 1

Views: 2K

High School What is an equation for ForceNet?

Jan 30, 2004 · Replies 4 · Jan 31, 2004

Replies: 4

Views: 26K

Undergrad Momentum, kinetic energy, and bullets

Dec 9, 2003 · Replies 9 · Jan 31, 2004

Replies: 9

Views: 27K

Graduate Resonating Vibrational Potentials

Jan 29, 2004 · Replies 7 · Jan 31, 2004

Replies: 7

Views: 3K

High School Does the breaking of the sound barrier by the bullet influence the BOOM

Jan 23, 2004 · Replies 22 · Jan 30, 2004

Replies: 22

Views: 6K

Undergrad How Do You Calculate Time Using an Acceleration Formula?

Jan 28, 2004 · Replies 3 · Jan 30, 2004

Replies: 3

Views: 12K

Undergrad Cannon Ball Paradox: Math Explained

Jan 12, 2004 · Replies 7 · Jan 30, 2004

Replies: 7

Views: 6K

Undergrad What Happens to a Candle and Mercury in a Freefalling Elevator?

Jan 23, 2004 · Replies 3 · Jan 29, 2004

Replies: 3

Views: 4K

Undergrad Gravitation on three uniform spheres

Jan 29, 2004 · Replies 1 · Jan 29, 2004

Replies: 1

Views: 3K

High School Which is More Efficient: Walking or Moving a Chair?

Jan 21, 2004 · Replies 8 · Jan 29, 2004

Replies: 8

Views: 3K

Graduate Analyzing Velocity as a Function of Depth Underwater

Jan 28, 2004 · Replies 1 · Jan 29, 2004

Replies: 1

Views: 3K

Graduate Possible webpage title: Is the Nuclear Industry Putting Public Safety at Risk?

Sep 8, 2003 · Replies 28 · Jan 28, 2004

Replies: 28

Views: 11K

High School How Does an Air Bag Utilize Physics to Save Lives?

Jan 27, 2004 · Replies 5 · Jan 28, 2004

Replies: 5

Views: 2K

Undergrad Gravitational Force: Is There Only One?

Jan 27, 2004 · Replies 7 · Jan 28, 2004

Replies: 7

Views: 3K

Graduate Calculating Potential Energy from Pressure Differences in Gas Flows

Jan 27, 2004 · Replies 2 · Jan 28, 2004

Replies: 2

Views: 10K

High School Designing a Human-Powered Claw: Pullys, Levers, and Gears

Jan 26, 2004 · Replies 2 · Jan 27, 2004

Replies: 2

Views: 2K

Undergrad What’s the Impact of Momentum vs. Energy in Bullet Performance?

Jan 27, 2004 · Replies 2 · Jan 27, 2004

Replies: 2

Views: 2K

Undergrad Do center of mass and weight play a role in the difficulty of pull-ups?

Oct 8, 2003 · Replies 28 · Jan 25, 2004

Replies: 28

Views: 16K

Poll

Graduate The center of Mass perfectly match the center of Force->

Jan 23, 2004 · Replies 9 · Jan 25, 2004

Replies: 9

Views: 6K

Undergrad Simple 2D Ball Collision Formulas for Velocity and Angle of Deflection

Nov 9, 2003 · Replies 9 · Jan 25, 2004

Replies: 9

Views: 11K

Undergrad Calculating Drop Time to Reach 90 km/h: Confirm/Deny!

Jan 25, 2004 · Replies 5 · Jan 25, 2004

Replies: 5

Views: 3K

High School Opening my door by pushing vs. striking.

Jan 23, 2004 · Replies 4 · Jan 24, 2004

Replies: 4

Views: 3K

Undergrad Yoyo Calculation: Derive Rotational Kinetic Energy

Jan 21, 2004 · Replies 9 · Jan 24, 2004

Replies: 9

Views: 8K

Undergrad Powers of 'P': Balancing a Helicopter at N Times the Scale

Jan 22, 2004 · Replies 2 · Jan 24, 2004

Replies: 2

Views: 2K

High School Motorcycle Q#1: Right Foot Peg Touching Road During Turn

Jan 23, 2004 · Replies 2 · Jan 24, 2004

Replies: 2

Views: 3K

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