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Undergrad Calculate Impact Force Of a Truck Hitting a Deer

Apr 12, 2010 · Replies 5 · Apr 12, 2010

Replies: 5

Views: 16K

Undergrad Finding the safe rotational speed of a carousel?

Apr 12, 2010 · Replies 1 · Apr 12, 2010

Replies: 1

Views: 5K

High School What is the Relationship Between Mass, Gravity, and Attraction in Physics?

Apr 10, 2010 · Replies 6 · Apr 12, 2010

Replies: 6

Views: 4K

Undergrad Calculating Temp Difference in a hot water tank

Apr 10, 2010 · Replies 5 · Apr 12, 2010

Replies: 5

Views: 5K

Graduate Why do systems tend to favor the state with the lowest potential energy

Apr 12, 2010 · Replies 6 · Apr 12, 2010

Replies: 6

Views: 11K

Graduate What happens to water droplets and ice cubes at zero pressure?

Apr 10, 2010 · Replies 13 · Apr 12, 2010

Replies: 13

Views: 5K

High School Calculating Deceleration Forces: Is It Easier to Use g's or Mass?

Apr 11, 2010 · Replies 22 · Apr 12, 2010

Replies: 22

Views: 10K

Undergrad Gravitational Potential Energy: A Basic Explanation

Apr 10, 2010 · Replies 3 · Apr 11, 2010

Replies: 3

Views: 2K

High School Is water a particle or a wave?

Apr 10, 2010 · Replies 5 · Apr 11, 2010

Replies: 5

Views: 3K

Proton Accelerator: A DIY Adventure with Magnetic Fields, Ions, and Explosions

Apr 11, 2010 · Replies 1 · Apr 11, 2010

Replies: 1

Views: 2K

Graduate Centripetal Force: At what RPM must you gainer at to decapitate yourself?

Apr 11, 2010 · Replies 1 · Apr 11, 2010

Replies: 1

Views: 3K

High School Modern day applications of Hooke's Law

Apr 10, 2010 · Replies 4 · Apr 11, 2010

Replies: 4

Views: 6K

Undergrad Why do F1 cars have wide tires?

Apr 10, 2010 · Replies 8 · Apr 11, 2010

Replies: 8

Views: 4K

Undergrad What is the Coriolis force at the equator?

Apr 10, 2010 · Replies 7 · Apr 11, 2010

Replies: 7

Views: 10K

Undergrad What Physics Principles Explain These Phenomena?

Apr 10, 2010 · Replies 1 · Apr 10, 2010

Replies: 1

Views: 2K

Undergrad The height of a spring loaded pen

Apr 10, 2010 · Replies 1 · Apr 10, 2010

Replies: 1

Views: 2K

High School Bullet Fired From Moving Train Scenario

Apr 10, 2010 · Replies 11 · Apr 10, 2010

Replies: 11

Views: 8K

Graduate Speed of sound in material under tension

Apr 10, 2010 · Replies 2 · Apr 10, 2010

Replies: 2

Views: 6K

High School Gravel Running: Friction & Velocity Questions

Apr 10, 2010 · Replies 5 · Apr 10, 2010

Replies: 5

Views: 7K

Graduate Powers analisys for ball stuck in a Chimney

Apr 8, 2010 · Replies 1 · Apr 10, 2010

Replies: 1

Views: 2K

Undergrad Sphere rolling down an inclined plane

Apr 10, 2010 · Replies 1 · Apr 10, 2010

Replies: 1

Views: 4K

High School I am confused about the orbital velocity

Apr 8, 2010 · Replies 16 · Apr 10, 2010

Replies: 16

Views: 4K

Undergrad When is Work Done? - P.E., Air Resistance & Gravity

Apr 9, 2010 · Replies 7 · Apr 9, 2010

Replies: 7

Views: 3K

High School Compression Springs: Calculating Force Released

Apr 9, 2010 · Replies 3 · Apr 9, 2010

Replies: 3

Views: 3K

Undergrad How Does a Coin Roll in a Circle Without Falling?

Sep 22, 2009 · Replies 2 · Apr 9, 2010

Replies: 2

Views: 4K

Graduate Mass spring system where springs have mass

Apr 4, 2010 · Replies 2 · Apr 9, 2010

Replies: 2

Views: 2K

Undergrad Fluid Dynamics - Increasing Outlet Pressure

Apr 7, 2010 · Replies 4 · Apr 9, 2010

Replies: 4

Views: 7K

High School Question about atmosphere pressure

Apr 9, 2010 · Replies 1 · Apr 9, 2010

Replies: 1

Views: 2K

Undergrad Minimum force to keep a mass floating in the air

Apr 7, 2010 · Replies 25 · Apr 9, 2010

Replies: 25

Views: 18K

High School If a 10km Asteroid Impacted the Pacific along the equator

Apr 8, 2010 · Replies 2 · Apr 9, 2010

Replies: 2

Views: 3K

Undergrad Specific Orbital Energy confusion

Apr 9, 2010 · Replies 5 · Apr 9, 2010

Replies: 5

Views: 6K

Undergrad Force of gravity from different heights

Apr 9, 2010 · Replies 1 · Apr 9, 2010

Replies: 1

Views: 6K

Undergrad Which Physics Laws Are Broken in Movie Action Scenes?

Apr 6, 2010 · Replies 17 · Apr 8, 2010

Replies: 17

Views: 10K

High School Positive Hydrogen Ion = Proton?

Apr 7, 2010 · Replies 6 · Apr 8, 2010

Replies: 6

Views: 7K

High School Why Does a Box on a Building Have Potential Energy?

Apr 8, 2010 · Replies 1 · Apr 8, 2010

Replies: 1

Views: 2K

High School Why is the concept of Power useful?

Apr 1, 2010 · Replies 21 · Apr 7, 2010

Replies: 21

Views: 6K

High School Clarification on position equation for simple harmonic motion

Apr 6, 2010 · Replies 8 · Apr 7, 2010

Replies: 8

Views: 7K

Undergrad Why Is Momentum Conserved but Not Kinetic Energy in an Inelastic Collision?

Apr 3, 2010 · Replies 3 · Apr 7, 2010

Replies: 3

Views: 2K

Undergrad Force Required to Accelerate M2 w/ Equal Masses M1 & M2

Apr 7, 2010 · Replies 2 · Apr 7, 2010

Replies: 2

Views: 2K

Undergrad Calculating time from velocity and acceleration?

Apr 7, 2010 · Replies 1 · Apr 7, 2010

Replies: 1

Views: 3K

Undergrad Maximal acceleration of a car in a curve

Apr 4, 2010 · Replies 13 · Apr 7, 2010

Replies: 13

Views: 5K

High School Difference Between Couple, Torque & Moment of Force

Apr 5, 2010 · Replies 11 · Apr 7, 2010

Replies: 11

Views: 4K

Graduate Potential for particle circular motion

Mar 30, 2010 · Replies 1 · Apr 7, 2010

Replies: 1

Views: 2K

High School How Is Tension Measured in a Cable?

Apr 5, 2010 · Replies 1 · Apr 6, 2010

Replies: 1

Views: 3K

Graduate What is the stress tensor and how is it related to motion?

Apr 5, 2010 · Replies 12 · Apr 6, 2010

Replies: 12

Views: 4K

Graduate Drive Line Out Of Gear Correction

Apr 4, 2010 · Replies 2 · Apr 6, 2010

Replies: 2

Views: 2K

High School Rad/s vs rev/min- label question

Apr 6, 2010 · Replies 2 · Apr 6, 2010

Replies: 2

Views: 4K

Undergrad Bubbles in water, need a method/equations

Jan 25, 2010 · Replies 3 · Apr 6, 2010

Replies: 3

Views: 3K

High School New at using a multimeter, why isn't this working?

Apr 5, 2010 · Replies 1 · Apr 5, 2010

Replies: 1

Views: 2K

High School Air pressure difference in inside and outside of house

Jan 12, 2010 · Replies 3 · Apr 5, 2010

Replies: 3

Views: 7K

High School Why is the symbol for angular momentum L?

Mar 9, 2009 · Replies 7 · Apr 5, 2010

Replies: 7

Views: 24K

High School What is Angular Velocity? | Learn About Angular Velocity

Mar 31, 2010 · Replies 2 · Apr 5, 2010

Replies: 2

Views: 2K

Undergrad 2 questions about sound - logic reasoning needed

Apr 3, 2010 · Replies 10 · Apr 5, 2010

Replies: 10

Views: 5K

Graduate Does cartesian velocity contribute to Lat Long conversion?

Apr 1, 2010 · Replies 3 · Apr 5, 2010

Replies: 3

Views: 3K

Graduate How Long Will It Take for All the Rope to Fall Off the Table?

Mar 30, 2010 · Replies 8 · Apr 4, 2010

Replies: 8

Views: 3K

Graduate Minimum speed of interaction of matter

Apr 4, 2010 · Replies 2 · Apr 4, 2010

Replies: 2

Views: 2K

Undergrad An odd thought on centrifugal compressors.

Apr 4, 2010 · Replies 1 · Apr 4, 2010

Replies: 1

Views: 2K

Undergrad Strange behavior of the density of the water around the freezing point

Apr 4, 2010 · Replies 5 · Apr 4, 2010

Replies: 5

Views: 5K

High School Potential Difference in Series and Parallel circuit

Apr 3, 2010 · Replies 7 · Apr 4, 2010

Replies: 7

Views: 21K

High School Displacement of water for a boat and raft

Apr 3, 2010 · Replies 3 · Apr 3, 2010

Replies: 3

Views: 5K

Undergrad Does Amplitude Affect the Oscillation Period in Harmonic Motion?

Apr 3, 2010 · Replies 2 · Apr 3, 2010

Replies: 2

Views: 2K

Space Based Solar Power Generation.

Dec 11, 2009 · Replies 3 · Apr 3, 2010

Replies: 3

Views: 3K

Undergrad What (physically) to do in a falling elevator?

Apr 2, 2010 · Replies 4 · Apr 3, 2010

Replies: 4

Views: 5K

Undergrad Density and pressure relationship

Apr 2, 2010 · Replies 2 · Apr 3, 2010

Replies: 2

Views: 5K

Undergrad Momentum Change in a Collision with Combined Units

Apr 3, 2010 · Replies 3 · Apr 3, 2010

Replies: 3

Views: 2K

Graduate Optimizing Water Displacement on an Incline

Apr 2, 2010 · Replies 6 · Apr 2, 2010

Replies: 6

Views: 4K

Undergrad Why does the air above an aerofoil travel faster

Mar 31, 2010 · Replies 11 · Apr 2, 2010

Replies: 11

Views: 19K

Undergrad Adding Friction to Momentum Equation: How to Explain Loss of Momentum?

Mar 31, 2010 · Replies 10 · Apr 2, 2010

Replies: 10

Views: 8K

Undergrad Velocity given centripetal force, accounting for friction

Apr 2, 2010 · Replies 4 · Apr 2, 2010

Replies: 4

Views: 3K

High School Misunderstanding about work definition

Apr 2, 2010 · Replies 3 · Apr 2, 2010

Replies: 3

Views: 2K

High School Can an Object Launched into Space Eventually Collide with Earth?

Mar 21, 2010 · Replies 7 · Apr 2, 2010

Replies: 7

Views: 3K

Undergrad Question about how collisions deal with force.

Apr 2, 2010 · Replies 1 · Apr 2, 2010

Replies: 1

Views: 2K

High School Gravity: The Endless Energy Source?

Apr 2, 2010 · Replies 9 · Apr 2, 2010

Replies: 9

Views: 2K

Graduate Understanding Poisson's Ratio and Restrained Cylinders

Apr 2, 2010 · Replies 3 · Apr 2, 2010

Replies: 3

Views: 6K

Undergrad Weight of object as measured on spring scales

Apr 1, 2010 · Replies 1 · Apr 2, 2010

Replies: 1

Views: 3K

Undergrad Newtons from Bouyancy underwater comparing helium, oxygen, and hydrogen

Apr 1, 2010 · Replies 1 · Apr 1, 2010

Replies: 1

Views: 2K

High School Could a Potted Venus Flytrap be Deadly?

Mar 31, 2010 · Replies 8 · Apr 1, 2010

Replies: 8

Views: 3K

High School Ionic Formula for Carbon-12 Ion: C4+ or C4-?

Mar 30, 2010 · Replies 2 · Apr 1, 2010

Replies: 2

Views: 12K

Undergrad Newton's Law of Cooling formula

Aug 7, 2004 · Replies 8 · Apr 1, 2010

Replies: 8

Views: 28K

Undergrad Resistive forces on a submarine?

Apr 1, 2010 · Replies 1 · Apr 1, 2010

Replies: 1

Views: 3K

Undergrad Why Is Energy Conservation Misunderstood in Inelastic Collisions?

Mar 27, 2010 · Replies 2 · Apr 1, 2010

Replies: 2

Views: 2K

Graduate Object floating on the surface of water

Mar 31, 2010 · Replies 2 · Apr 1, 2010

Replies: 2

Views: 3K

Undergrad Why Does Normal Force Increase in an Accelerating Elevator?

Apr 1, 2010 · Replies 4 · Apr 1, 2010

Replies: 4

Views: 9K

Undergrad Motion of an aircraft in ground

Mar 31, 2010 · Replies 7 · Apr 1, 2010

Replies: 7

Views: 3K

High School Does Static Friction Exist When Gravity is Applied?

Mar 31, 2010 · Replies 2 · Mar 31, 2010

Replies: 2

Views: 2K

Undergrad What is the final angular velocity of a falling physical pendulum?

Mar 31, 2010 · Replies 1 · Mar 31, 2010

Replies: 1

Views: 2K

Undergrad What Happens to Torque and Angular Momentum if Radius Doubles?

Mar 30, 2010 · Replies 12 · Mar 31, 2010

Replies: 12

Views: 4K

Graduate Gyroscope Precession - Cause? - From Feynman

Mar 27, 2010 · Replies 4 · Mar 31, 2010

Replies: 4

Views: 8K

Undergrad How Do You Use a Fiducial Marker to Measure a Pendulum's Time Period?

Mar 24, 2010 · Replies 1 · Mar 31, 2010

Replies: 1

Views: 2K

Graduate Product of Inertia: Understand the Rule

Mar 30, 2010 · Replies 1 · Mar 31, 2010

Replies: 1

Views: 4K

Undergrad Determining force to crush an object using a pendulum

Mar 31, 2010 · Replies 1 · Mar 31, 2010

Replies: 1

Views: 2K

Undergrad Should force impact moving objects less than ones at rest?

Mar 29, 2010 · Replies 5 · Mar 31, 2010

Replies: 5

Views: 4K

Undergrad Question about cornstarch/ non Newtonain fluid

Mar 30, 2010 · Replies 2 · Mar 31, 2010

Replies: 2

Views: 2K

Undergrad What is the calculation for determining motor shaft RPM using a tachometer?

Mar 31, 2010 · Replies 3 · Mar 31, 2010

Replies: 3

Views: 16K

High School Does Changing Mass Affect Velocity and Momentum?

Mar 30, 2010 · Replies 2 · Mar 30, 2010

Replies: 2

Views: 2K

High School Air Pressure Between Highway Vehicles: Causes & Effects

Oct 4, 2005 · Replies 13 · Mar 30, 2010

Replies: 13

Views: 9K

Undergrad Replace external force with an internal force

Mar 29, 2010 · Replies 2 · Mar 30, 2010

Replies: 2

Views: 2K

Graduate Solving the Rope Falling off a Table Problem: A Contradiction?

Mar 30, 2010 · Replies 3 · Mar 30, 2010

Replies: 3

Views: 2K

Graduate Could Kinetic Energy Weapons Revolutionize Modern Warfare and Space Missions?

Mar 28, 2010 · Replies 5 · Mar 30, 2010

Replies: 5

Views: 3K

Undergrad Help with a debate on atoms at work?

Mar 30, 2010 · Replies 1 · Mar 30, 2010

Replies: 1

Views: 2K

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