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iVinArrow [24]
4 years ago
11

Observations show that the dragonflies complete one revolution every 0.017 s during this "spin dry" maneuver. What is their angu

lar speed in radians per second?
Physics
1 answer:
polet [3.4K]4 years ago
7 0

Answer:

\omega=369.6\frac{rad}{s}

Explanation:

The time taken to complete one revolution is the period and is defined as:

T=\frac{1}{f}(1)

The angular speed is given by:

\omega=2\pi f\\f=\frac{\omega}{2\pi}(2)

Replacing (2) in (1) and solving for \omega:

T=\frac{1}{\frac{\omega}{2\pi}}\\\omega=\frac{2\pi}{T}\\\omega=\frac{2\pi}{0.017s}\\\omega=369.6\frac{rad}{s}

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EleoNora [17]

Answer:

Examples for Rectilinear Motion

1) The use of elevators in public places is an example of rectilinear motion.

2) Gravitational forces acting on objects resulting in free fall is an example of rectilinear motion.

3) Kids sliding down from a slide is a rectilinear motion.

4) The motion of planes in the sky is a rectilinear motion.

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3 years ago
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Two forces whose resultant is 100newton are perpendicular to each other. If one of them makes an angle of 60newton with the resu
Elis [28]

Answer:

100 N

Explanation:

Given that,

Two forces whose resultant is 100newton are perpendicular to each other.

If one of them makes an angle of 60newton with the resultant.

F_1=100\times \sin60=86.60\ N

and

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The magnitude of force,

F=\sqrt{F_1^2+F_2^2} \\\\F=\sqrt{86.6^2+50^2} \\\\F=99.99\ N

or

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3 years ago
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marusya05 [52]

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Explanation:

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Answer:

B: precipitation seeping through pores and cracks in the ground

Explanation:

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