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Secondary 1 | Science
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Cheryl Ong
Cheryl Ong

Secondary 1 chevron_right Science

Can someone help me with this question? I'm pretty sue my answer is wrong. Thanks!

Date Posted: 2 years ago
Views: 208

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Poh Wei Jie
Poh Wei Jie's answer
38 answers (Tutor Details)
(a) Rate of energy loss = 20 + 80 = 100 J/s. (Just read off the graph, by evaporation is 20 and by the other
3 is 80)

(b) Change in rate of energy loss = 60 - 20 = 40 J/s. The rate of energy loss by evaporation increased by 40 J/s between the start of the race to halfway of the race.