Calculate the product: (32cm/1s) (60s/1min) (60min/1hr) (1m/100cm)

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation:

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.

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