5 articles trouvés pour ce sujet.
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The extended real number system |
2009-06-30 |
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Justin pose la question :
Hi again, thanks a lot for answering my previous question! I was also just wondering again if the extended real number system has a potential or actual infinity because it includes positive infinity as a point that exists at the end of it?
All the Best,
Justin
Robert Dawson lui répond. |
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Potential infinity and actual infinity |
2009-06-29 |
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Justin pose la question :
Hi there, I was just wondering what is the difference between the potential infinity and actual infinity in math? Thanks a lot for your help with this question!
All the Best,
Justin
Robert Dawson lui répond. |
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A falling block |
2008-10-18 |
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KOBINA pose la question :
A 50 kg block being held at rest 20m above the ground is released. the block falls (no friction). how fast is the block traveling (in m/sec) when it has lost 40% of its original potential energy.
Stephen La Rocque lui répond. |
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A gymnast is swinging on a high bar. |
2007-02-14 |
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William pose la question :
A gymnast is swinging on a high bar. The distance between his waist (center of mass) and the bar is 1.1 m. If his speed at the top of his swing is zero and his gain in speed is due entirely to his change in gravitational potential energy, find his speed at the bottom of his swing.
Stephen La Rocque lui répond. |
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Static electricity on an airplane |
2000-11-12 |
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John pose la question :
What discharges an airplane of static electricity in a electric storm when it is flying. I assume the charge is on the out side of the plane but when does it get discharged, or does it occur at landing?
Ted Mathie lui répond. |
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