<u>Answer:
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Average speed, over the first 4.0 s of its motion, of a pebble released from rest off a bridge = 19.6 m/s
<u>Explanation:
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We have equation of motion , , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
In this case the initial velocity of body = 0 m/s, acceleration = 9.8 , we need to calculate displacement when t = 4 seconds.
Substituting
So a distance of 78.4 meter has been traveled by pebble in 4 seconds.
Average speed = 78.4/4 = 19.6 m/s
The answer would be Pink, because it is colorless.
Answer:
after a product has been improved and approved? reporting the results finding ways to lower costs selling a prototype determining criteria.
Explanation:
I can help you do them for yourself :)
Based on the calculations, the differential height (h) of the mercury column is equal to 0.582 m or 58.2 cm.
<h3>How to calculate the differential height?</h3>
First of all, we would highlight the necessary parameters to be used in determining the differential height (h) of the mercury column as follows:
- Density of water = 1000 kg/m³.
- Specific gravity of oil is 0.72.
- Specific gravity of mercury is 13.6.
Next, we would determine the differential height (h) of the mercury by using this expression:
Substituting the given parameters into the formula, we have;
Differential height of mercury (Hg) = 0.582 m or 58.2 cm.
Read more on density here: brainly.com/question/3173452
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