3 years ago

Explain how the technology of doing math and adding numbers has changed over time this is science

1 answer:

7 0

It has changed because earlier in the days people couldn't even figure out if the world was flat or round but now we can add decimals and multiply fractions.

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When a rattlesnake strikes, its head accelerates from rest to a speed of 32 m/s in 0.63 seconds. Assume for simplicity that the

irina [24]

Answer:

Power, P = 162.53 Watts

Explanation:

Given that,

Mass, m = 200 g = 0.2 kg

Initial speed of the snake, u = 0

Final speed of the snake, v = 32 m/s

Time, t = 0.63 s

Power of an object is given by :

$P=\dfrac{W}{t}$

$P=\dfrac{\Delta K}{t}$

$P=\dfrac{mv^2}{2t}$

$P=\dfrac{0.2\times (32)^2}{2\times 0.63}$

P = 162.53 Watts

So, the power of the rattlesnake is 162.53 Watts. Hence, this is the required solution.

4 0

3 years ago

A volleyball player hit a ball with a mass of 0.25 kg. The average acceleration of the ball was 15.5 m/s². How much force did th

iogann1982 [59]

Force can be obtained by multiplying the mass of the object times the acceleration. Since all of the needed values are given, solving is done as shown below:

Force = mass x acceleration

Force = 0.25 kg x 15.5 m/s^2
Force = 3.875 N

Among the choices, the correct answer is C. 3.87 N

5 0

2 years ago

Read 2 more answers

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UkoKoshka [18]

The answer will be 0.99

7 0

3 years ago

Which of the following organisms would most likely be found at the top of a food web? a Flowers b Bees c Birds d Foxes

Setler79 [48]

Foxes, because they can eat birds, and flowers are at then bottom, and ahead of them is bees, the birds,and at the top is foxes.

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