4 years ago

What two factors determine how fast weathering occurs

1 answer:

5 0

<span>The factors that determine how fast weathering occurs are the type of rock, type of soil, time it takes, and the climate.</span>

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If a box weighing 520 N is hung from a spring whose constant is 650 N/m, how many centimeters will the spring stretch?

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Answer: static stretching

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A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/min. When switched off, it rotates 46.0 times befor

BlackZzzverrR [31]

Answer:

The angular acceleration of the centrifuge is -231.74 rad/s².

Explanation:

Given that,

Angular speed = 3500 rev/min = 366 rad/s

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Using formula of angular displacement

$\theta=2\pi n$

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$\theta=2\pi\times46$

$\theta=289.02\ rad$

We need to calculate the angular acceleration

Using equation of motion

$\omega_{f}^2=\omega_{i}^2+2\alpha\theta$

$\alpha=\dfrac{\omega_{f}^2-\omega_{i}^2}{2\theta}$

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$\alpha=-231.74\ rad/s^2$

Hence, The angular acceleration of the centrifuge is -231.74 rad/s².

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3 years ago

While ice skating, you unintentionally crash into a person. Your mass is 60kg

miss Akunina [59]

Answer:

The speed is 6.1m/s with an angle of 56.3 degrees north of east.

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We meed to apply the Linear momentum theorem:

$m1*vo1+m2*vo2=m1*vf1+m2*vf2\\60*(8.0m/s(East))+80*(9.0m/s(North))=140*vf\\vf=3.4m/s(East)+5.1m/s(North)$

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3 years ago

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number 4 should be no

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4 years ago