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uysha [10]
3 years ago
12

I dont know how to do question 3,4

Physics
1 answer:
dlinn [17]3 years ago
7 0

<span>Prior to the Cambrian, organisms with hard parts (eg. shells and bones) weren't present for most the time, and it's generally such hard parts that get to fossilize. There's also been more time for Precambrian deposits to get destroyed by natural processes, </span>

<span>The supply of Precambrian fossils has actually greatly improved over the last few decades. The so called Ediacaran faunas have been found at many parts of the world, and would be worth looking into.hope it helps</span>
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schepotkina [342]

Answer:

Explanation:

Given that,

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M = 2kg

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Then, amplitude is given as

A = √[xo + (Vo²/ω²)]

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ω is the angular frequency and it can be determine using

ω = √(k/m)

Where

k is spring constant = 300N/m

m is the mass of object = 2kg

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ω = √300/2 = √150

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Then,

A = √[xo + (Vo²/ω²)]

A = √[0 + (12²/12.5²)]

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4 0
3 years ago
Galois drove 60.0 kilometers due west in 5.00 hours and then drove 43.0 kilometers due north in 3.00 hours.
IceJOKER [234]

Answer:

Explanation:

See the attachment for the details.  A right triangle is formed to find the hypotenuse of the two legs consisting of the actual driving distances and times.  The hypotenuse gives the vector information for the displacement at the end of 8 hours of driving.  

The individual driving times and distances are summed to provide:

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103 km

<u>(b) What was his average speed?</u>

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<u>(d) What was his average velocity?</u>

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2 years ago
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Sergio [31]

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3 years ago
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