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Red Supergiant Star

A star of 15 solar masses exhausts its hydrogen in about one-thousandth the lifetime of our sun.

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Hits: 4173


Red Giant

For stars of less than 4 solar masses, hydrogen burn-up at the center triggers expansion to the red giant phase.

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Hits: 1876


This site demonstrates two-dimensional collisions. Two balls of different masses can be shot at each other and the resulting collision and direction of the balls is shown

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Hits: 3711


Atwood's Machine

The Atwood machine consists of two masses (M1 and M1) connected via a rope running over a pulley. This site considers the frictionless case.

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Hits: 2752

Falling Parachutes and Air Resistance 2

A simulation of two masses (may be altered) falling under the influence of gravity while attached to different sized parachutes.

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Hits: 3433


Neutron Degeneracy

Neutron degeneracy is a stellar application of the Pauli Exclusion Principle, as is electron degeneracy. No two neutrons can occupy identical states, even under the pressure of a collapsing star of ...

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Hits: 3122


Relativistic Mass

A short description of this topic,

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Hits: 914

Mass, length and time.

Information on mechanical units and conversions.

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Hits: 1451

This link has been reported hyperphysics

Hyperphysics - Isospin

Explanation of conservation of isopin in groups of particles with nearly the same mass.

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Hits: 2150

This link has been reported

More than sunshine

Feature article explain all the different activities of the sun from the solar wind to coronal mass ejections

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Hits: 5711

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