4 years ago

The key difference between rough sketches and finished sketches of a crime scene is that the finished sketches __________.

Physics

2 answers:

tensa zangetsu [6.8K]4 years ago

5 0

Are more presentable

irina [24]4 years ago

3 0

Your answer is going to be D, are more presentable. I hope this helps!! :)

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A student mixes two substances in a large beaker. After two hours, the student sees that the substances have separated again.

S_A_V [24]

The full question is found in the image attached

Answer:

Densities

Explanation:

When we talk about density, one of the things that come to our mind is actually how heavy something is.

If i have substances that possess different densities, i will notice that i can not really mix them because they will separate and the heavier substance will be at the bottom while the lighter substance will be at the top.

Hence the two substances separated due to difference in density.

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3 years ago

A 100 kg boat is floating in water. half of the boat is submerged under water. what is the weight of the boat?

Alex17521 [72]

W=MG
w is weight
m is mass
g is gravity
W=(100 kg)(9.8 m/s)
W= 980 N
hope this helps

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3 years ago

The rate at which speed changes is called

sergiy2304 [10]

Answer:

meters per second

Explanation:

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3 years ago

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Which of the following is a harmful effect of oil spills? (A)Migration of large schools of fish (B)Changes in sea level (C)Plant

kotegsom [21]

C is your answer to the question

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3 years ago

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There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted s

lukranit [14]

Answer:

Option B

$a=19 m/s^{2}$

Explanation:

Given information

Radius of container, r=12cm=12/100=0.12m

Angular velocity= 2 rev/s, converted to rad/s we multiply by 2π

Angular velocity, $\omega=2*2\pi =12.56637061$

We know that speed, $v=r\omega$

Centripetal acceleration, $a=\frac {v^{2}}{r}$ and substituting $v=r\omega$ we obtain that

$a=r\omega^{2}$

Substituting \omega for 12.56637061 and r for 0.12

$a=0.12*(12.56637061)^{2}=18.94964045 m/s^{2}$

Rounded off, $a=19 m/s^{2}$

7 0

3 years ago