欢迎光临!

雨后彩虹

31 May 2014

自言自语篇

有没有人好奇我是个作家还是个教 Physics(物理) 的?
之前这个部落格是我发布小说的地方,但现在却是一些废话和关于物理的笔记。
其实,我的兴趣是写作,但专长是物理这一科。
至于我是不是位物理教师,你们自己猜猜吧!
当个以中文教 SPM 物理的老师应该不错吧? 尤其是对在英文方面遇到一些困难的同学们 *虽然我的英语也不是很好 ><'''。我呢,中文可以算是说得很流利,但英文看得懂却只会说出一大堆 "Broken English",真是可悲!
没关系, 有问题就问我吧,我会尽力的 *虽然没有 100% 把握能完全帮到你们。

刚才在想 Astro SPM 这一个频道有没有以中文教物理?如果要聘人上节目,我要报名!!!好吧,就让草女孩我继续做白日梦吧 TToTT

一边吃妈妈的擂茶,一边研究物理

23 May 2014

Form 4 Physics | Chapter 2 | Note

Hmmm... seems like most of the students still confused with the trigonometry although they reached Form 5. So, I am going to give you a tips on how to solve question about it now.

Usually, we need to know about sin and cos only for SPM level.
Figure 1

Figure 2
Tips: Always use cos for the axis which sticks to the angle given and use sin for the axis which does not stick to the angle given.
Now, you don't need to worry which trigonometry should you use since it's as easy as this. Still not confident yet? Let's try a question.

Example:
Figure 3
The picture above shows that a girl is trying to stop her dog which is running forward with a force of 40N. How much force should the girl use to pull her dog to make her dog stop moving?
Solution:
*Draw a free-body diagram first!
Figure 4

The girl needs to pull 40N to the right since her dog is running to the left with force of 40N.
Figure 5
But!!! We're not going to look for the force to the right, but 30° above the horizontal axis.
Remember the note above? We're going to use it now.
Figure 6
The force to the right in figure 5 is 40N.
The force to the right in figure 6 is F cos 30°.
Both of them are equal, so:
40 = F cos 30°
F = 40 / cos 30°
F = 40 / 0.866
F = 46.19N

∴ The girl apply foce of 46.19N at 30° above horizontal axis to pull the dog to come to a stop.

Easy, right?
Ask if you have any question!
Wish you all the best!

15 May 2014

可爱的小白猫

今天没什么好写的,那就……与你们分享一则冷笑话谜语吧!

一天,一只小白猫掉进了河里。小黑猫勇敢地把小白猫救了上来。小白猫上岸后对小黑猫说了句话。请问它说了什么?
在看到以下的答案前,先猜猜看吧!
答案是:它说了“喵!”

14 May 2014

玫瑰情人节快乐!

各位关注着以及“观众”们好!
草女孩我知道这个部落格一直被我忽略,极少更新,但趁现在得空就来更新吧!
今天是 5月 14日,亦是“玫瑰情人节”。
对这节日陌生不?
也许你们对情人节不陌生,但何谓“玫瑰情人节”呢?

根据百度:这个节日起源于古希腊传说。众所周知,玫瑰象征着爱情,但是并不是每一朵玫瑰,每一种色彩的玫瑰都象征爱情。在5月14日这一天,你或许会见到很多种颜色的玫瑰,他们代表着不同的话语,虽同是玫瑰,却也意义千差万别。

例如:黄玫瑰代表分手(草女孩不鼓励男生送黄玫瑰哦!)

如果你们想问草女孩有没有庆祝这个节日的话……
我的答案是“有”。
我与我的功课们一起“庆祝”这个节日!
自从草女孩上了学院后,功课可算是多,但没多到离谱的地步,就是做完了又有新功课,手停不了啦,呜~~~
好了,我就写到这里,赶功课去了!
想念去餐馆点菜,一起吃不完那些菜