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Nina [5.8K]
3 years ago
8

What variable does each of the symbols in the equation represent?

Physics
1 answer:
taurus [48]3 years ago
4 0

Answer:

Pls give the equation and for what is that equation for?

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Dario, a prep cook at an Italian restaurant, spins a salad spinner and observes that it rotates 20.0 times in 5.00 seconds and t
BabaBlast [244]

Answer:

-\frac{8\pi}{3}rad/s^2

Explanation:

To solve this problem we need to apply the concept related to Angular Acceleration. We can find it through the equation

\omega_f^2-\omega_i^2=2\alpha\theta

Where for definition,

\omega_i = \frac{\theta}{t}

The number of revolution (\theta)was given by 20 times, then

\omega_i = \frac{20*2pi}{5}

\omega = 8\pi rad/s

We know as well that the salad rotates 6 more times, therefore in angle measurements that is

\theta = 6*2\pi rad = 12\pi rad

The cook at the end stop to spin, then using our first equation,

0-8\pi = 2\alpha (12\pi)

re-arrange to solve\alpha ,

\alpha = \frac{-8\pi}{2*12\pi}

\alpha = -\frac{8\pi}{3}rad/s^2

We can know find the required time,

\omega_f-\omega_i = \alpha t

Re-arrange to find t, and considering that \omega_f=0

t= \frac{\omega_i}{\alpha}

t=\frac{-8\pi}{-8\pi/3}

t=3s

Therefore take for the salad spinner to come to rest is 3 seconds with acceleration of -\frac{8\pi}{3}rad/s^2

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Why does the mass of a candle decrease after burning?
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Because when a candle burns the wax is burning off so as its heated more and more wax is lost and if more wax is lost... Obviously it means that the candles mass will be lower :)
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What must be true of a force that causes an object to move in a circular motion?
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C. It acts perpendicular to the velocity and it's directed towards the center

hope this helps :)

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What is the total number of components into which a single force can be reso
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