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3 years ago

The strongest hurricane to hit the United States was a small storm. Why did it cause so much damage?

Physics

2 answers:

Illusion [34]3 years ago

6 0

B) it had very high air pressure

zheka24 [161]3 years ago

4 0

Answer: Option (A) is the correct answer.

Explanation:

Small storms carry strong winds along with them due to which there is generation of large waves on top of the surge. This increases the risk of flood and cause damage to the sea defenses.

Thus, we can conclude that out of the given options, strongest hurricane to hit the United States was a small storm. It caused so much damage as it had strong winds and a massive storm surge.

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Answer:

Cannonball b spends more time in the air than cannonball a.

Explanation:

Starting with the definition of acceleration, we have that:

$a=\frac{\Delta v}{\Delta t}\\\\\Delta t= \frac{\Delta v}{a}$

Since both cannonballs will stop in their maximum height, their final velocity is zero. And since the acceleration in the y-axis is g, we have:

$\Delta t= -\frac{v_{oy}}{g}$

Now, this time interval is from the moment the cannonballs are launched to the moment of their maximum height, exactly the half of their time in the air. So their flying time t_f is (the minus sign is ignored since we are interested in the magnitudes only):

$t_f=2\frac{v_{oy}}{g}$

Then, we can see that the time the cannonballs spend in the air is proportional to the vertical component of the initial velocity. And we know that:

$v_{oy}=v_o\sin\theta\\\\\implies t_f=2\frac{v_o\sin\theta}{g}$

Finally, since $\sin60\°=\frac{\sqrt{3} }{2}$ and $\sin45\°=\frac{\sqrt{2} }{2}$ , we can conclude that:

$t_{fa}=\sqrt{2}\frac{v_o }{g} \\\\t_{fb}=\sqrt{3}\frac{v_o }{g}\\\\\implies t_{fb}>t_{fa}$

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