[2019 DSE] Physics 物理 操題區

加油呀 我27號先完

但係係container 喎，唔係一齊煲，咁水嘅heat energy 咪有啲去咗個煲然後再heat loss to the surrounding 囉

Mc 26
LQ 65
P2 滿分
有冇可能攞*?

5hrs

E3計數assumption 大家寫咩

mc最難應該係q11

一開始有60℃嘅水，放入container，total heat energy 係源於水，所以total energy 不變，但有heat flow from water to the container ，之後heat energy will loss to the surrounding from container ，所以會少咗energy needed to be converted，所以mass of ice 少咗

我同你差唔多

唔係container 咩？正常唔會煲埋個杯掛

我assume埋個杯60度，多左個杯所以heat capacity大左，要用多啲冰cool down

最尾題冇自然fission係點？
我記得B字頭嘅元素可以吸收neutron就寫左落去寫

如果係煲，insulator點煲到水？