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TOPIC: Science

Science 2 years 1 month ago #1

  • Ho Chern Tung
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Pls, help me solve these questions.
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Science 2 years 1 month ago #2

  • Fibonacci
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Shadows - answer is option (1) since shadows are formed when the path of light is blocked. Here, the bigger circle shadows are formed.

Q23 - no answer since the common temperature where ALL substances are in the liquid state would be between 48 to 55 degrees

Q19 - options A, B and C are correct.
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Science 2 weeks 14 hours ago #3

  • Rex Fernando
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Shadows - Answer is 1 (Both will produce a bigger shadow)
Q19 - Answer is 3 (Blood does not carry digested food - carries Oxygen, Carbon-dioxide & some waste materials)

Q23 - Answer is 3 (at 110°C)
@45°C - P is solid & QRS are liquid
@70°C - PQR are liquid & S is gas
@110°C - PQ are liquid & RS are gas
@130°C - P is liquid & QRS are gas
Therefore, @ 110°C two of the substances (PQ out of PQRS) will be liquid.
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