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3 years ago

Emily is a competitive swimmer. Why does wearing a swim cap help Emily swim faster?

Physics

1 answer:

sladkih [1.3K]3 years ago

6 0

Answer:

It's helps Emily became when she swims her hair is not in the way creating friction and making her swim faster. friction acts between two metals blocks that slide past each other.

Explanation:

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What is the public storm warning signal that carries winds of 30 to 60 km/hr and can cause no damage to very light damage

Shkiper50 [21]

Answer:

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Explanation:

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2 years ago

Two cars are traveling on a desert road. After 5.0 seconds they are side by side at the next telephone pole.The distance between

stira [4]

The question looks incomplete, but according to the information given above seem like they have identical journeys.
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3 years ago

Which statements describe a situation with a displacement of zero? Check all that apply.traveling south for 30 miles, then turni

cluponka [151]

Answer:

• riding on a Ferris wheel whose entrance and exit are the same

• walking around the block, starting from and ending at the same house

• running exactly one lap around a racetrack

Explanation:

Displacement simply means the.change in position of an object. In a situation whereby the initial and final position are thesame, the displacement will be zero.

The statements that describe a situation with a displacement of zero include:

• riding on a Ferris wheel whose entrance and exit are the same

• walking around the block, starting from and ending at the same house

• running exactly one lap around a racetrack

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3 years ago

Why is there so much variation in human skin coloration? a. This occurred because humans underwent natural selection, which resu

Arlecino [84]

Answer:

e. All of these.

Explanation:

The skin in humans ranges from darkest to the lightest color, as a result of genetic makeup, exposure to the sun rays, skin pigmentation may be either due to the evolutionary process of natural selection, and it may be due to the biochemical effects of the UV rays.

As the pigment in the skin of humans is affected by the content of melanin in the body that causes the determination of skins cells of the darker colored humans, and the light skin is determined by the bluish-white tissues under the dermis and the hemoglobin.

The emergence of skin pigments dates back to 1.2 billion years ago. When the harsh climatic conditions drove the early humans into arid and open landscapes. In general, the people living near to equator have darkly pigmented than those living in poles are lightly pigmented.

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3 years ago

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2 years ago