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sineoko [7]
3 years ago
7

Farmer Wilcox wants to reduce the wind velocity near his farm. He should _____.

Physics
2 answers:
kvv77 [185]3 years ago
4 0

Answer: Option (c) is the correct answer.

Explanation:

In order to reduce the velocity of wind there should be some placed some barrier near the field. So that when fast moving wind strikes at the surface of barrier then its speed will decrease.

Therefore, the farmer Wilcox should plant trees around the perimeter of his fields which will act as a barrier to the fast moving winds.

IRISSAK [1]3 years ago
3 0
Plant trees around the perimeter of his fields
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A charge q moves from point A to point B. The potential energy of the charge at point A is 5.3 _ 10-10 joules and at point is B
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The change in electric potential energy will be converted to kinetic energy; thus:
K.E = 5.3 x 10⁻¹⁰ - 3.1 x 10⁻¹⁰
K.E = 2.2 x 10⁻¹⁰ Joules
Option D is correct.
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3 years ago
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a vibrating source with a frequency of 20.0Hz produces water waves that have a wavelength of 3.0 cm. Calculate the speed of the
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60m/s

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Considered the statement "You can move parts of your body because of energy from the sun. "Described a series of energy conversi
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Two identically built microscopes are being used to characterize sub-micron features with two different laser sources. The first
Agata [3.3K]

Answer:

r_2\approx430\ nm

Explanation:

Given:

wavelength used by the first microscope, \lambda_1=632\times 10^{-9}\ m

resolving power of the first microscope, r_1=500\times 10^{-9}\ m

wavelength used by the second microscope, \lambda_2=543\times 10^{-9}\ m

For the microscopes the resolving power is given as:

r=1.22\times \frac{\lambda}{a}

where:

\lambda = wavelength of the laser source used

a= numerical aperture of the microscope

r= smallest feature that can be distinguished using the optical device

For the first microscope:

r_1=1.22\times \frac{\lambda_1}{a_1}

500\times 10^{-9}=1.22\times\frac{632\times 10^{-9}}{a_1}

a_1=1.54208

Since both the optical device are identically built we will have:

a_2=a_1=1.54208

Now for the second optical device:

r_2=1.22\times \frac{\lambda_2}{a_2}

r_2=1.22\times \frac{543\times 10^{-9}}{1.54208}

r_2\approx430\ nm

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3 years ago
Which of the following describes the way a population can be dispersed?
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Answer:

option b. <em>uniform</em><em> </em><em>population</em>

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