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2 years ago

Laminar flow, where water moves in approximately straight-line paths, characterizes ________.

Physics

1 answer:

densk [106]2 years ago

6 0

Answer:

b. slow-moving streams.

Explanation:

In Fluid Mechanics, the Reynolds numbers indicates the existence of turbulence in fluid streams. Low Reynolds numbers are related with laminar flow. The Reynolds formula is:

$Re = \frac{\rho_{water} \cdot L_{c}}{\mu_{water}} \cdot v$

The Reynolds number is directly proportional to fluid speed. Hence, slow-moving streams are a sound example of laminar flow. The correct answer is B.

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Explanation:

the acceleration will be unchanged according to newton second law of motion

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2 years ago

Dolphins communicate underwater using sound waves. This is called ________.

Ray Of Light [21]

Answer:

D. echolocation

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1 year ago

Read 2 more answers

_______________ describes how much energy is required to raise an object's temperature. convection radiation conduction specific

Gelneren [198K]

Hello,

The answer should be option D "specific heat".

Reason:

Specific heat is what tells the person how my heat and or pressure is required to raised the objects temperature. Its not option A convection because I'm convection is mainly used as like the ozone layer and the suns rays. Its not option B radiation because radiation doesn't tell the person what temperature it needs in order for it to rise its more like its already rises and hot. Its also not option C because conduction is the process of a object heating another object therefore the answer is option D.

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Hope this helps!

~Nonportrit

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2 years ago

Read 2 more answers

When you look at a transverse wave, the distance from the baseline to the crest of the wave is called the wave's

Minchanka [31]

Answer:

Amplitude

Explanation:

Amplitude is the vertical distance between the baseline to the crest or the horizontal diatance between crest and trough of a wave. Trough is the lowest point of the wave hence called the baseline while crest is the highest point of a wave. The horizontal distance between two successive waves is however called the wavelength and the product of wavelength and frequency gives the velocity of the waves. Note that amplitude has no effect on the velocity of the waves.

7 0

2 years ago

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A bowl contains 7 red balls and 10 blue balls. A woman selects 4 balls at random from the bowl. How many different selections ar

denis-greek [22]

Answer:

1050 possible selections

Explanation:

Number of red balls = 7

Number of blue balls = 10

Let blue balls be B and red balls be R

four balls are to be selected. At least three must be blue.

the first combination is 4blue 0red

second combination is 3blue 1red

(10C4*7C0 + 10C3*7C1)

210 *1 +120 *7

210+840

=1050 possibilities

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2 years ago