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3 years ago

Would you be more concerned if something you consider precious went through a

Physics

1 answer:

Dahasolnce [82]3 years ago

5 0

Answer:

Explanation:

A chemical change.

Usually those are irreversible. Or they may be reversible, but the form they take may leave your object not the same as they started out.

A physical change might be just as deadly. If the object melted like a chocolate Easter Bunny then the object would be irreversible as well. Take a better example.

Suppose you are talking about a Gold Coin. If you heated it so it melted, the gold would retain its value, but the fact that it is a coin and valuable as such, means that it has lost that part of its value.

I really don't know. My instincts tell me that the chemical change is more dangerous, but I can't rule out the other choice..

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It is given that the length of blade of the turbine is 58 m.

During the motion, the turbine will undergo rotational motion. Hence the radius of the circle traced by the turbine is equal to the length of the blade.

Hence radius r = 58 m.

The frequency of the turbine [f] =14 rpm.

Here rpm stands for rotation per minute.

Hence the frequency of the turbine in one second-

$f=\frac{14}{60}\ s^-1$

$f=0.23333 Hz$

Here Hz[ hertz] is the unit of frequency.

The angular velocity of the turbine $\omega =2\pi f$

$\omega=2*3.14*0.2333$

$\omega=1.465124$ radian/second

Now we have to calculate the centripetal acceleration of the blade.

Let the linear velocity of the blade is v.

we know that linear velocity v=ωr

The centripetal acceleration is calculated as-

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

$=\frac{[\omega r]^2}{r}$

$=\omega^2r$

$=[1.465124]^2 *58$

$=124.5021234 m/s^2$ [ans]

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