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Burka [1]
3 years ago
13

8. You find a 10,000,000 year old rock 2,500 km away from the nearest seafloor spreading center, how fast has the plate been mov

ing since its formation? Give answer in cm/yr. (Hint: 1 km = 100,000 cm)
Biology
2 answers:
Likurg_2 [28]3 years ago
8 0

You find a 10,000,000 year old rock 2,500 km away from the nearest seafloor spreading center. The plate has been moving since its formation by (2,500 km)(100,000 cm/1 km)/(10,000,000 yr).so the plat has been moving equal to 25 cm per year since its formation.

Vinvika [58]3 years ago
5 0

Answer:

7.93x10^{-7}cm/s

Explanation:

Hello,

In this case, the motion velocity is determined by the equation:

v=\frac{distance}{time}

In such a way, we first develop the units conversions for the required units:

time=10000000year*\frac{365day}{1year} *\frac{24h}{1day} *\frac{3600s}{1h}=3.1536x10^{14}s

distance=2500km*\frac{100000cm}{1km}=2.5x10^6cm

Now, the velocity is computed as shown below:

v=\frac{2.5x10^6cm}{3.1536x10^{14}s} =7.93x10^{-7}cm/s

Best regards.

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