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The powder around the hot needle moves away.
Reason
- The high temperature of the needle lowers the surface tension of the water around it.
- High surface tension on the sided pits the powder away
sharon kalunda answered the question on April 3, 2019 at 13:59
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Date posted: April 3, 2019. Answers (1)
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Date posted: April 3, 2019. Answers (1)
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Date posted: April 3, 2019. Answers (1)
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Date posted: April 3, 2019. Answers (1)
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(i) Calculate...(Solved)
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Date posted: April 3, 2019. Answers (1)
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Date posted: April 3, 2019. Answers (1)
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Date posted: April 3, 2019. Answers (1)
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Date posted: April 3, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)
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Date posted: April 2, 2019. Answers (1)