4 years ago

How does an iron nail become a rusty nail

1 answer:

Alex4 years ago

4 0

<span>the metal starts breaking down upon contact with water or moisture in the air and bonds with oxygen particles. this is called oxidization and causes the reddish color.</span>

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Which nucleus completes the following equation?

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I think B but I could be wrong

Explanation:

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3 years ago

The physical structure of the earth’s rock is changed by _____.

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3 years ago

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Answer:

Acceleration is $148.33\ m/s^{2}$

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As per the question:

Radius of the circle, R = 1.8 m

Height above the ground, h = 1.8 m

Horizontal distance, x = 9.9 m

Now,

The magnitude of the centripetal acceleration can be calculated as:

$a_{c} = \frac{v^{2}}{R}$

where

v = velocity

R = radius

$a_{c}$ = centripetal acceleration

Now, if we consider the vertical component of motion only, then considering the initial velocity, 'u' = 0, from kinematic eqn:

$h = ut + \frac{1}{2}gt^{2}$

$h = 0.t + \frac{1}{2}gt^{2}$

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t = 0.606 s

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x = vt

$v =\frac{x}{t}$

$v =\frac{9.9}{0.606} = 16.34\ s$

Now, we know that the centripetal acceleration is given by:

$a_{c} = \frac{16.34^{2}}{1.8} = 148.33\ m/s^{2}$

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3 years ago