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3 years ago

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What is a barrier island? A. A ridge of sand that forms between the mainland and an island connecting the island to the mainland

B. A long ridge of sediment that forms when a spit closes off a bay C. A narrow bank of sand that projects into the water from a bend in the coastline D. A long ridge of sediment deposited by the longshore current and separated from the mainland

2 answers:

djyliett [7]3 years ago

5 0

The answer is d a long ridge of sediment deposited by the longshore current and seperated from mainland

Romashka-Z-Leto [24]3 years ago

3 0

<h3><u>Answer;</u></h3>

D. A long ridge of sediment deposited by the longshore current and separated from the mainland

A barrier island <em><u>is a long ridge of sediment deposited by the longshore current and separated from the mainland</u></em>.

<h3><u>Explanation</u>;</h3>

<em><u>A barrier island is a long, thin, sandy stretch of land that is oriented parallel to the mainland coast. The barrier island protects the coast from the full force of powerful storm waves. </u></em>
<em><u>The barrier islands are very important as they protect the mainland from storms and waves. </u></em>Additionally, they protect tidal lagoons that serve as nurseries for a variety of fish and shellfish.

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Friction between solids can be most accurately defined as the force that opposes the sliding motion of two _____that are touchin

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surfaces

Explanation:

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3 years ago

Magnus has reached the finals of a strength competition. In the first round, he has to pull a city bus as far as he can. One end

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Answer:

The total work that the rope does to Mangnus is - 5780 Jules.

Explanation:

By definition, the work is defined as:

$W=F.d$

Where F and d are the force and the total displacement. Note that in the definition the product is a scalar product since F and d are both vectors.

Take into account that according to third Newton's law the force that the rope does to Magnus is opposite to the force that Magnus does to the rope, therefore the scalar product will be negative due the rope's force goes against to Magnus displacement.

For calculating the work, we take 2500 N as the value for the force and 2.312 meters as the value for the displacement:

$W=-2500 N * 2.312 m$

$W=-5780 Nm = -5780 J$

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3 years ago

A banked circular highway curve is designed for traffic moving at 58 km/h. The radius of the curve is 201 m. Traffic is moving a

skelet666 [1.2K]

Answer:0.077

Explanation:

Given

banked designed for traffic moving at $58 km/h\approx 16.11 m/s$

Radius of the curve 201 m

Actual traffic velocity = $37 km/h approx 10.27 m/s$

For banking of road

$tan\theta =\frac{v^2}{rg}$

$tan\theta =\frac{16.11^2}{201\times 9.81}$

$\theta =7.49^{\circ}$

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$a=\frac{v^2}{r}$

Taking component of centripetal acceleration

along and perpendicular to surface

$a_{parallel}=\frac{v^2cos\theta }{r}$

$a_{perpendicular}=\frac{v^2sin\theta }{r}$

From FBD

$mgsin\theta -f_s=ma_{parallel}$

$f_s=mgsin\theta -ma_{parallel}$ ----1

where $f_s$ is frictional force

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$N=mgcos\theta +ma_{perpedicular}$ ----2

and we know coefficient of friction is given by

$\mu =\frac{f_s}{N}$

$\mu =\frac{mgsin\theta -ma_{parallel}}{mgcos\theta +ma_{perpedicular}}$

$\mu =\frac{gsin\theta -\frac{v^2cos\theta }{r}}{gcos\theta +\frac{v^2sin\theta }{r}}$

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3 years ago

Which of the following is not a way to make exercising on a cold day safer?

IRISSAK [1]

Answer:

D.

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3 years ago

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P: the partial pressure of it
H: Henry's constant
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Answer:
the solubility (in m units) is
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3 years ago