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3 years ago

Scientists find the same type of index fossil in two different locations on Earth. What can they conclude from this discovery?

Physics

2 answers:

Sergio [31]3 years ago

7 0

The index fossils are the same geological age. Sorry if i'm wrong

OverLord2011 [107]3 years ago

3 0

Answer:

The index fossils are the same geological age.

Explanation:

I just took the test and this was the correct answer

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50 points and brainliest!!!! plz help me

antoniya [11.8K]

decrease yeah free 100 percent

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3 years ago

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What is observed as the distance between the rest position and the crest of a light wave decreases?

Alex_Xolod [135]

Answer: answers B

Explanation: it gets dimmer becuase less light......

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2 years ago

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You are watching an object that is moving in SHM. When the object is displaced 0.560 m to the right of its equilibrium position,

Ilia_Sergeevich [38]

Answer:

2.95m

Explanation:

The farthest distance the object can move is the radius of the circle of which the Simple harmonic motion is assumed to be a part

But V = w× r; where V is velocity,

w is angular velocity and r is radius.

Also,

a= w2r; where a is linear acceleration

but a = v× r ; by comparing both equations

Hence r = a/v =8.6/2.45 =3.51m

But the horizontal distance of the motion is given by:

X = rcosx ; where x is the angle

X is the distance covered.

We know that the maximum value of cos x is 1 which is 0°

When the object moves in a fashion directly parallel to an horizontal distance, maximum distance would be reached and hence:

X = r=3.51m

Meaning the object needs to travel 3.51-0.56=2.95m further.

Note: the acceleration of the motion is constant whether it is swinging towards the left or right.

3 0

3 years ago

16 points and brainiest whoever is right

masha68 [24]

Let k be the spring constant. Then you have
188=k*21.8
k=188/21.8=8.62,
In the second part you use
m g= k x
x=m g/k= 38/8.62=4.4cm

4.4 cm is the answer

6 0

3 years ago

Alcohol consumption slows people's reaction times.In a controlled government test,it takes a certain driver 0.320 s to hit the b

svetoff [14.1K]

Answer:

When the person is drunk the car travels 20.1 meters more than when the person is sober. The distance traveled by car is:

Person drunk: 28.1 m

Person sober: 8 m

Explanation:

The distance traveled can be found using the following equation:

$v = \frac{x}{t} \rightarrow x = v*t$

Where:

v: is the speed = 90 km/h

t: is the time

When the person is sober, the time that takes to hit the brakes is 0.320 s, so we have:

$x = v*t = 90 \frac{km}{h}*\frac{1 h}{3200 s}*0.320 s = 8 \cdot 10^{-3} km = 8 m$

And when the person is drunk, the time is 1.00 s, hence the distance is:

$x = v*t = 90 \frac{km}{h}*\frac{1 h}{3200 s}*1 s = 0.0281 km = 28.1 m$

The distance traveled by the car when the person is drunk compared when the person is sober is:

$d = 28.1 m - 8 m = 20.1 m$

Therefore, when the person is drunk the car travels 20.1 meters more than when the person is sober.

I hope it helps you!

6 0

3 years ago