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murzikaleks [220]
3 years ago
7

Does aliens exist in this world​

Physics
2 answers:
Lyrx [107]3 years ago
8 0

Answer:

No, not yet

Explanation:

otez555 [7]3 years ago
4 0

There is no reliable evidence, and none has ever been presented, to indicate that they do.

Or to indicate that they have ever been here in the past.

So as far as we know, they're not here now, and they never were.

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Cell with structures labeled A, B, and C
sveticcg [70]
The answer is A. :)
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3 years ago
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What is the force of an object with a mass of 65 kg and an an unknown acceleration?
Alik [6]

We know, F = m.a

F = 65 * a

Where, F = force

a = unknown acceleration

8 0
4 years ago
Reset Answers
Artemon [7]

Explanation:

At a height of 93 m, the gravitational potential energy is given by :

P = mgh

Where, m is the mass of a penny

We can find its mass.

m=\dfrac{P}{gh}\\\\m=\dfrac{3}{9.8\times 93}\\\\m=0.00329\ kg

We need to find how much potential energy will have transformed into kinetic energy at the half way point (46.5m). It can be calculated as :

E=mgh'\\\\E=0.00329\times 9.8\times 46.5\\\\E=1.499\ J

Hence, a penny will have transferred 1.499 J of potential energy into kinetic energy.

7 0
4 years ago
__________ postures occur when you are doing work that causes you to hold the same posture or position for an extended period of
cricket20 [7]
So the answer to this question is B. Static
3 0
3 years ago
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The car was initally traveling at 25 m/s. The car slows with a negative acceleration as shown. How long does it take the car to
Karolina [17]

Answer:

<h2>t = 2.35s</h2>

Explanation:

Using one of the equation of motion expressed as v = u+at where;

v is the final velocity = 2.0m/s

u is the initial velocity = 25m/s

a is the acceleration = -a (since the acceleration is negative)

t is the time taken

Substituting the given parameters into the formula above;

2.0 = 25-9.81t

subtract 25 from both sides

2.0 - 25 = 25-9.81t - 25

-23 = -9.81t

Divide both sides by -9.81

-23/-9.81 = -9.81t/-9.81

t = 23.0/9.81

t = 2.35s

<em>Hence it took the car 2.35s to slow to a final velocity of 2.0 m/s</em>

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3 years ago
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