Question

1 answer the 19th question in the first attachment and the 23rd question in the second attachment

Answer 1

Answer:

19th que.

Wooden handle have been warmer.

Explanation:

Because Metals are more temperature conductive and the metal blade was in cold night so, definitely metal blade will be very cold

Answer:

23rd que.

The left hand-side candle would go out first.

Explanation:

Because oxygen is needed for the process of combustion (say burning). And you can see that their is no air supply in first chimney. So, left hand-side candle will go out first.

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Answer 2

Answer:

1st attachment-The wooden handle would have been warmer than the metal blade because metal is a good conductor of heat. So, in cold night, metal blade would transfer its heat to cold environment. But wood, being a bad conductor of heat, would not transfer its heat to cold surrounding and would remain warmer than the metal blade.

2nd attachment-The candle in the chimney with no air gap at bottom will go out first because on burning the candle, all the air in chimney gets heated and melts the wax of candle readily. The candle in the chimney with air gaps at bottom will last longer because, in this case, the lighter air is replaced by the cooler air from the bottom of the chimney, which makes the environment of candle cooler.

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