✔ 最佳答案
Q: heat capacity 同 specific heat capacity 分別depends on 咩?
The difference is that the mass of the heated (or cooled) object is incorporated into the qunatity "heat object", but not the quantity "specific heat capacity" (actually, the term 'specific' aleardy indicates 'per uit mass')
Thus "heat capacity" depends on the mass and material of the object, whereas "specific heat capacity" only depends on the material of the object.
Q: evaporation of water 係咩temperature先occur?
Evaporation occurs when the air temperature is above "dew point". In other words, evaporation occurs when the surrounding air is not saturated, i.e. the relative humidity is below 100%.
The lower the relative humidity of the surrounding air (i.e. the larger the difference between air temperature and dew point temperature), the faster the rate of evaporation.
Q: 為減少heat,通常會用low specific heat capacity黎包住? 呢句岩吾岩? 做experiment 用的cup都是低specificheat capacity,
The use of low specific heat container is to reduce calculation error in experiment, which generally assume that the container takes no heat.
If the container is of high specific heat capacity, it will absorb quite an amount of heat and thus the assumption will not be valid. In that case, the heat absorbed by the container needs to be included.
Q: 咁Fibre glass can reduce heat lost to surrounding的話, 佢ge specific 應該高定低?
To reduce heat lost to the surroundings is by using a low (thermal) conductivity material, i.e. material that is a poor conductor of heat. Fibre glass is one of these low conductivity materials.
