作者fishead1116 (2D平面鱼)
看板b97902HW
标题[问题] 单班物理作业......
时间Sun Sep 28 20:52:10 2008
第3章的第70题看不懂耶
有英文强者可以翻译一下吗?
附上原文
Pulsars are neutron stars that emit X rays and other radiation in such a way
that we on Earth receive pulses of radiation from pulsars at regular intervals
equal to the period that they rotate. Some of these pulsars rotate with
periods as short as 1 ms!! The Crab Pulsar ,located inside the Crab Nebula in
the consellation Orion, has a period currently of length 33.085ms. It is
estimated to have an equatorial radius of 15km , an average radius for a
neutron star(以上是题目叙述)
(a) What is the value of centripetal acceleration of an object on the surface
at the equator of the pulsar?
(b) Many pulsars are observed to have periods that lengthen slightly with
time, a phenomenon called "spin down ". The rate of slowing of the Crab
Pulsar is 3.5 * 10(-13次方)s per second which implies that if this rate
remains constant, the Crab Pulsar will stopp spinning in 9.5*10(10次)s
(about 3000 years from today). What is the tangential acceleration of
an object on the equator of this neutron star?
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.112.240.157
1F：推 lockercho:我发现大家都是这题看不懂XDDD 09/28 21:21
2F：推 martinku:有物理系强者帮我秒了它 09/28 21:52
3F：→ fishead1116:物理强者也行 09/28 22:00
4F：推 tempTTP1:那顺便请问第64题是平抛还是直线?若是平抛,好像没给高度 09/28 23:53