冷风1985

momo.1231 发表于 2-11-2011 17:35
9a,如果没有换成Kg 可以吗？ 老师~

no problem at all.

qh94

老师 for qn 5a 可以用 tip to tail method?

飞腾火焰

13 (b) 的 0.9375 kWh x 40c/kWh 不应该是 37.5 cents 吗？

DCDC1112

老师，Q2B, 可以放因为 centre of gravity is higher, so it's unstable 和 area of the base is smaller 吗？
      Q11b)ii) 可以放因为 when the light ray enters the optical fibre, it moves from a denser to a less dense medium ?

谢谢。

DearDream

请问Combine Science Chem的一分的填空题答案里面有拼写错误减分吗？

JJ0033

13 (b) The ans should be 0.9375 kWh x $0.40 x 7 = $2.625 ?? Because the question states the cost FOR one week, which is 7 days?:o

冷风1985

angziru 发表于 2-11-2011 18:04
For question 7(a), i wrote that the moveable screen will move backward. Is it correct to say so?

I think it will be accepted. It is at least a very clear message to me that you meant to the right.

DearDream

JJ0033 发表于 2-11-2011 18:37
13 (b) The ans should be 0.9375 kWh x $0.40 x 7 = $2.625 ?? Because the question states the cost FOR ...

Question state that use 45mins per "week"

冷风1985

DearDream 发表于 2-11-2011 18:36
请问Combine Science Chem的一分的填空题答案里面有拼写错误减分吗？

如果是key words 会扣分的.

少女时代12

Question 5A 可以用 8cm 吗 ？ 虽然是给了7cm可是我用了8cm。。。
还有 11 （ii）可以说因为 optical fibre is a denser medium as compared to air so since its a denser medium, total internal reflection occurs ?