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3 years ago

11

Folding is usually the result of what type of stress

2 answers:

I am Lyosha [343]3 years ago

8 0

<span>Compressional forces are the stress that would cause the effect called "Folding".</span>

Vlada [557]3 years ago

8 0

Compressional forces -GradPoint

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A student is studying simple harmonic motion of a spring. She conducts an experiment where she measures the amplitude and period

myrzilka [38]

Answer:

5.9*10^{-4}m

Explanation:

to find the uncertainty of the displacement it is necessary to compute the uncertainty for the angular frequency:

$\omega=\frac{2\pi}{T}=\frac{2\pi}{0.40s}=15.707rad/s\\\\\frac{d \omega}{\omega}=\frac{dT}{T}\\\\d\omega=\omega \frac{dT}{T}=(15.707rad/s)\frac{0.020s}{0.40s}=0.785rad/s$

then, you can calculate the uncertainty in angular displacement:

$\theta=\omega t\\\\\frac{d\theta}{\theta}=\sqrt{(\frac{d\omega}{\omega})^2+(\frac{dt}{t})^2}\\\\d\theta=\theta\sqrt{(\frac{d\omega}{\omega})^2+(\frac{dt}{t})^2}=0.0422$

finally, by using:

$y=Acos(\omega t)\\\\dy=dAcos(\omega t)d(\omega t)=(dA)cos(\theta)d\theta=(0.002m)cos(0.785)(0.0422)\\\\dy=5.9*10^{-4}m$

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3 years ago

A truck moving at 20 mph shoots a soccer ball at 20 mph in the opposite direction. How fast is the soccer ball moving? Explain

Brrunno [24]

Answer:

Speed of the soccer ball with respect to ground is ZERO

Explanation:

As we know that truck is moving with speed 20 mph

Now a soccer ball is shoot from truck with respect to the motion of truck in opposite direction

The relative speed of the soccer ball is

$v_{bt} = 20 mph$

now we know that

$v_{bt} = v_b - v_t$

so we have

$-20 mph = v_b - 20$

so we have

$v_b = 0$

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3 years ago

Which is an advantage of storing data digitally?

Rainbow [258]

Answer:

A

Explanation:

Because I said so

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2 years ago

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Bad White [126]

Answer:

6 seconds?

Explanation:

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3 years ago

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What information is needed to calculate acceleration?

aleksley [76]

The correct answer to the question is : B) Change in velocity and time.

EXPLANATION:

Before going to answer this question, first we have to understand acceleration of an object.

The acceleration of an object is defined as the rate of change of velocity i.e the change in velocity per unit time.

Mathematically acceleration a = $\frac{dv}{dt}$

dv is the change in velocity, and dt is the time taken by an object.

Hence, change in velocity and time are taken in order to calculate the acceleration of an object.

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3 years ago

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