Monday Unit test: Ms Nayr's Class:

2 answers:

6 0

1. is A 7
2. reticulated means divide or mark something in such a way as to resemble a net or network.
3. A dhole is an Asian dog that has a Sandy coat and black, bushy tail and lives in packs.

elena-14-01-66 [18.8K]3 years ago

5 0

1.) 7, humans have the same amount of neck bones. Think of it that way

2.) It has a pattern diamond like or web like.

3.) Indian wild dog

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In order to design an experiment you need a ____ about the scientific question you are trying to answer

s2008m [1.1K]

C Hypothesis. It is the correct answer.

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3 years ago

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N what direction does the medium move relative to the direction of the wave? Explain.

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Two types of mechanical waves: longitudinal waves and transverse waves; the medium movement differs between the two.

In a longitudinal wave the medium particle movement is parallel to the direction of wave propagation; example is sound wave in air.

In a transverse wave the medium particle movement is perpendicular to the direction of wave propagation; example is mechanical wave on a string.

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3 years ago

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A 4.4 kg marble (really big heavy marble) is accelerating down an incline. When it reaches level ground it slows down to a stop

KengaRu [80]

Mass=4.4kg

acceleration=-1.74m/s^2

Use newtons second law

$\\ \rm\longmapsto Force=ma$

$\\ \rm\longmapsto Force=4.4(-1.74)$

$\\ \rm\longmapsto Force=-7.656N$

initial velocity=u

Final velocity=v=0

Acceleration=a=-1.74m/s^2

Time=t=1.27s

$\\ \rm\longmapsto a=\dfrac{v-u}{t}$

$\\ \rm\longmapsto u=v-at$

$\\ \rm\longmapsto u=0-(-1.74)(1.27)$

$\\ \rm\longmapsto u=1.74(1.27)$

$\\ \rm\longmapsto u=2.2m/s$

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3 years ago

Newton's Law of Cooling says that the rate of cooling of an object is proportional to the difference between its own temperature

ASHA 777 [7]

Answer:

$\frac{dQ}{dt} =-hA\Delta T(t)$

Explanation:Newton.s law of cooling states that the rate of cooling of an object is proportional to the difference between its own temperatures and temperature of its surroundings. Mathematically,

$\frac{dQ}{dt} =-hA [T(t)-T(s)]\\$