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4 years ago

What kind of protective measure is it when a skunk uses body odor to protect itself from predators?

Physics

2 answers:

bixtya [17]4 years ago

6 0

B. Chemical Defense

Arte-miy333 [17]4 years ago

6 0

Answer: Option (b) is the correct answer.

Explanation:

It is known that various chemical reactions take place inside human body and body odor occurs due to one such chemical reaction.

This body odor leads to a stinking smell due to which predators stay away from their target.

Thus, we can conclude that when a skunk uses body odor to protect itself from predators then it is a chemical defense.

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As an intern at an engineering firm, you are asked to measure the moment of inertia of a large wheel for rotation about an axis

klio [65]

Hi there!

We can begin by finding the acceleration of the block.

Use the kinematic equation:

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The block starts from rest, so:

$d = \frac{1}{2}at^2\\\\12 = \frac{1}{2}a(4^2)\\\\\frac{24}{16} = a = 1.5 m/s^2$

Now, we can do a summation of forces of the block using Newton's Second Law:

$F = ma = m_bg - T$

mb = mass of the block

T = tension of string

Solve for tension:

$T = m_bg - ma = 8.2(9.8) - 8.2(1.5) = 68.06 N$

Now, we can do a summation of torques for the wheel:

$\Sigma \tau = rF\\\\\Sigma\tau = rT$

Rewrite:

$I\alpha = rT$

We solved that the linear acceleration is 1.5 m/s², so we can solve for the angular acceleration using the following:

$\alpha = a/r\\\\\alpha = 1.5/.42= 3.57 rad/sec^2$

Now, plug in the values into the equation:

$I(3.57) = (0.42)(68.06)\\\\I = (0.42)(68.06)/(3.57) = \boxed{8.00 kgm^2}$

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3 years ago

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OlgaM077 [116]

Answer:

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Explanation:

I just got it correct on E2020

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