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iragen [17]
3 years ago
15

Question 10

Biology
1 answer:
dusya [7]3 years ago
8 0

this ones simple all the others don't use sunlight because they cant make food within themselves but plants on the other hand use direct sunlight to make their food unlike the others. ;]

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Which statement is true about DNA?
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B

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How does the following sentence contribute to the development of the main idea in the article?
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What's the definition of science
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Which activity is an example of a chemical change?
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An old penny rusting

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1.) A person walks 12.5 km in 1.9 h. What is the person's<br> average velocity in km/h and m/s?
Artemon [7]

Answer:

1. 6.56 km/hr

2. 1.83 m/s

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The average velocity/speed can be calculated using the formula;

Average speed/velocity = distance/time

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Average velocity in km/hr = 12.5/1.9

= 6.578

= 6.56km/hr

However, in order to calculate the average speed in m/s, we have to convert distance in km to m, and time in hour to seconds.

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12.5km = 12.5 × 1000

= 12500m

1 hour = 3600seconds

1.9hours = 1.9 × 3600

= 6840seconds

Average velocity = 12500/6840

= 1.827

= 1.83m/s

7 0
3 years ago
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