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What happens when a person punches a spinning wheel on a skateboard?
Apr 25, 2007
Replies
22
Views
4K
What Does Kepler's Third Law of Planetary Motion Mean?
Apr 24, 2007
Replies
1
Views
2K
Car Physics Questions: Gear Shifting, Aceleration, Ground Resistance
Apr 22, 2007
Replies
5
Views
4K
Constant Properties of Sound Waves
Apr 21, 2007
Replies
3
Views
2K
Audibility of Sound at Mach 2: Inside the Car
Apr 21, 2007
Replies
1
Views
2K
Gas pressure and fluid question
Apr 20, 2007
Replies
3
Views
4K
Protecting Eggs with Tape and Balloons: A Scientific Approach
Apr 20, 2007
Replies
5
Views
6K
Identify Fan Power with Ohm Meter: AC Power Supply
Apr 20, 2007
Replies
6
Views
3K
What do 'perfect elastic' and 'perfect inellastic' collision mean?
Apr 20, 2007
Replies
8
Views
5K
What is the pressure of the universe?
Apr 20, 2007
Replies
1
Views
6K
Wave Speed on a Spring: Is It True?
Apr 19, 2007
Replies
11
Views
28K
Factors affecting the spring constant
Apr 17, 2007
Replies
2
Views
45K
Doubling the kinetic energy of an object does what to momentum?
Apr 16, 2007
Replies
5
Views
2K
Confused with DC motor equations when accelarating
Apr 15, 2007
Replies
10
Views
8K
Principle of Virtual Work and Feynman
Apr 15, 2007
Replies
7
Views
21K
Energy expended, no work done?
Apr 13, 2007
Replies
6
Views
4K
Building a vandergraph generator
Apr 13, 2007
Replies
2
Views
9K
Understanding Motor and Inductor Emf
Apr 13, 2007
Replies
5
Views
3K
A question of lifting bodies underwater
Apr 12, 2007
Replies
3
Views
3K
Why gravitational potential energy is negative?
Apr 12, 2007
Replies
10
Views
82K
Does Applying Force Away from the Center of Gravity Affect Energy Conservation?
Apr 12, 2007
Replies
7
Views
7K
Understanding Rotational Acceleration: Linear vs. Angular Momentum Derivation
Apr 12, 2007
Replies
6
Views
5K
Torque: Understanding Direction & Significance
Apr 12, 2007
Replies
3
Views
2K
Friction between two rotating cylinders
Apr 12, 2007
Replies
7
Views
10K
Does increasing mass reduce the bounciness of connected car tires?
Apr 11, 2007
Replies
2
Views
3K
Understanding Pressure in Outer Space: Equilibrium and Volume Variations
Apr 11, 2007
Replies
5
Views
6K
Marking system for ballistics pendulum
Apr 11, 2007
Replies
4
Views
3K
Solutions to RK Pathria Statistical Mechanics Chapter End Problems
Apr 11, 2007
Replies
1
Views
4K
Explicit vs implicit time dependence in Lagrangian mechanics
Apr 10, 2007
Replies
16
Views
22K
Help with pressure differences-sponge and wood
Apr 9, 2007
Replies
6
Views
3K
Rate at Which 2 Masses & Springs Exchange Energy
Apr 9, 2007
Replies
5
Views
2K
Unleashing the Power: Weightlifting and Physics of the 85kg Class"
Apr 8, 2007
Replies
15
Views
9K
Spin reduction & bouncing ball
Apr 8, 2007
Replies
3
Views
3K
How Do You Calculate Pendulum Impact Force in G's?
Apr 8, 2007
Replies
1
Views
4K
Is the Newtonian theory still being used?
Apr 8, 2007
Replies
7
Views
3K
Rotation and Poles: Water Draining Equator - True or Farce?
Apr 8, 2007
Replies
4
Views
2K
Can Massless Photons Carry Momentum?
Apr 5, 2007
Replies
10
Views
7K
Understanding Orbital Speed and Energy Dynamics
Apr 5, 2007
Replies
3
Views
5K
Tips for preparing for the AP physics C mechanics exam
Apr 4, 2007
Replies
4
Views
8K
Discover the Best Sound Frequencies for Shallow Water Fishing with a Fish Finder
Apr 4, 2007
Replies
12
Views
7K
Is Perpetual Motion Possible with a Pendulum and Balance System?
Apr 2, 2007
Replies
23
Views
11K
Volume of Water Displaced by Mass: Does Height Matter?
Apr 2, 2007
Replies
2
Views
8K
Impulse is the product of force and time
Apr 2, 2007
Replies
4
Views
10K
Residual stress in 3 layer cantilever beam
Apr 1, 2007
Replies
3
Views
5K
Do metal springs really store sig work as potential?
Mar 31, 2007
Replies
45
Views
11K
How Do You Calculate the Energy Stored in a Mousetrap for a Physics Project?
Mar 30, 2007
Replies
1
Views
12K
Building a Balloon Car: Increasing Speed
Mar 29, 2007
Replies
3
Views
11K
Free energy? increasing speed of a fluid in a nozzle
Mar 29, 2007
Replies
5
Views
3K
What are the Two Forms of Acceleration in Circular Motion?
Mar 28, 2007
Replies
12
Views
51K
Construct Lung-Powered Infrasound Didgeridoo Emitter
Mar 27, 2007
Replies
2
Views
3K
Can sound travel faster than a speeding jet?
Mar 26, 2007
Replies
12
Views
3K
How Does Pyrex Affect the Permittivity of Water in Capacitance Experiments?
Mar 26, 2007
Replies
10
Views
6K
Symmetry and conservation of momentum
Mar 25, 2007
Replies
2
Views
2K
Gravitational potential energy and Kinetic Energy
Mar 24, 2007
Replies
4
Views
12K
Why Inertia is so interesting?
Mar 24, 2007
Replies
5
Views
2K
Escape velocity and gravitational potential energy
Mar 24, 2007
Replies
10
Views
7K
Is the tension of the string same or not?
Mar 24, 2007
Replies
4
Views
3K
Third Newtonian law most fundamental
Mar 22, 2007
Replies
6
Views
3K
Lagrangian mechanics for a varible mass
Mar 21, 2007
Replies
3
Views
4K
Speed of Electric Field: Is it the Speed of Light?
Mar 20, 2007
Replies
2
Views
2K
Instantaneous Velocity methods
Mar 20, 2007
Replies
7
Views
33K
When conservation does not apply
Mar 19, 2007
Replies
2
Views
2K
Why Is It Harder to Lift Someone When They Are Asleep?
Mar 19, 2007
Replies
5
Views
48K
Pressure in Liquids: Why It's Shape-Independent
Mar 19, 2007
Replies
2
Views
3K
Observing Ink Points in Water: What is the Motion?
Mar 17, 2007
Replies
17
Views
31K
What Factors Determine the Direction of a Pulse in a Stretched Rope?
Mar 17, 2007
Replies
18
Views
5K
Model Damped Harmonic Motion with Y=(e^ax) Sin/Cos bx
Mar 16, 2007
Replies
7
Views
7K
Solving the Angle Required to Hit a Moving Target with Ballistic Projectiles
Mar 16, 2007
Replies
1
Views
4K
How Do Spring Constants and Resistor Formulas Compare?
Mar 16, 2007
Replies
4
Views
5K
How is kinetic energy related to momentum in terms of velocity?
Mar 15, 2007
Replies
2
Views
2K
What is the weight of air in a 30 gallon tank at 100 PSI?
Mar 15, 2007
Replies
3
Views
22K
Energy/Power content of Gasoline
Mar 14, 2007
Replies
2
Views
3K
Doppler and enegry conservation
Mar 13, 2007
Replies
4
Views
2K
Understanding Tension: Confusion about Coupling & Forces
Mar 12, 2007
Replies
10
Views
5K
How does a negative ion generator work?
Mar 12, 2007
Replies
1
Views
9K
Explaining Football Physics to a 12 Year Old
Mar 12, 2007
Replies
1
Views
8K
Angular momentum in eliptical orbits
Mar 11, 2007
Replies
6
Views
5K
Does Rolling a Basketball on Roadbase Compare to a Golf Ball on AstroTurf?
Mar 11, 2007
Replies
8
Views
3K
Why do masses cancel out when calculating y-components of momentum?
Mar 10, 2007
Replies
2
Views
3K
Momentum with kinetic friction
Mar 10, 2007
Replies
2
Views
2K
Speed vs Velocity: Difference & Examples
Mar 10, 2007
Replies
4
Views
45K
Can gyroscopic forces stop rotation?
Mar 10, 2007
Replies
8
Views
5K
Spinning ball and its trajectory
Mar 9, 2007
Replies
6
Views
5K
How Does Firing a Rifle Illustrate Kinetic Energy and Momentum?
Mar 8, 2007
Replies
6
Views
3K
Rotational weight vs dead weight
Mar 8, 2007
Replies
3
Views
6K
What Are the Major Types of Power Stations?
Mar 8, 2007
Replies
1
Views
22K
Confused about Free Energy relation to Pressure & Concentration
Mar 7, 2007
Replies
1
Views
5K
Newton's Third Law: Equal & Opposite Forces?
Mar 7, 2007
Replies
4
Views
3K
Falling From a Boat: Relative Velocity Explained
Mar 7, 2007
Replies
6
Views
2K
Equal work lifting versus pushing up a plane?
Mar 6, 2007
Replies
11
Views
20K
Does inertia apply to everything in the universe? Even subatomic?
Mar 6, 2007
Replies
8
Views
6K
Efficiency: Work, Limits, and Zeno's Paradoxes
Mar 6, 2007
Replies
3
Views
4K
Gibbs energy=chem potential (not convinced)
Mar 5, 2007
Replies
4
Views
3K
Does Gravity's Speed Affect Paper Falling During a Clap?
Mar 5, 2007
Replies
2
Views
2K
Find Your Place in the Universe: Calculations & Ideas
Mar 5, 2007
Replies
2
Views
2K
Why Does Snowfall Make Everything Seem So Quiet?
Mar 5, 2007
Replies
1
Views
2K
Understanding the Difference Between Mass and Weight: Explained in Simple Terms
Mar 3, 2007
Replies
17
Views
6K
What is the terminal velocity of a quarter?
Mar 3, 2007
Replies
6
Views
35K
Centrigugal force slingshot,the projectile is shot by the normal
Mar 3, 2007
Replies
4
Views
6K
A paradox inside Newtonian world
Mar 2, 2007
11
Replies
514
Views
59K
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