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Gennadij [26K]
3 years ago
5

Tectonic plates are large segments of the earth's crust that move slowly. Suppose one such plate has an average speed of 6.0 cm

per year. (a) What distance does it move in 71 seconds at this speed?
m
(b) What is its speed in miles per million years?
mi/My
Physics
1 answer:
faltersainse [42]3 years ago
7 0

Answer:

1.35×10⁻⁷ m

37.278 mi/My

Explanation:

Speed of the tectonic plate= 6 cm/yr

Converting to seconds

6=\frac{6}{365.25\times 24\times 60\times 60}

So in one second it will move

\frac{6}{365.25\times 24\times 60\times 60}

In 71 seconds

71\times \frac{6}{365.25\times 24\times 60\times 60}=1.35\times 10^{-5}\ cm

The tectonic plate will move 1.35×10⁻⁵ cm or 1.35×10⁻⁷ m

Convert to mi/My

1 cm = 6.213×10⁻⁶ mi

1 M = 10⁶ years

6\times 6.213\times 10^{-6}\times 10^6=37.278\ mi/My

Speed of the tectonic plate is 37.278 mi/My

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another way, speed is a scalar value, while reloolg isa Which ONE of the following represents a toy car that moves at a higher a
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Car  A will have highest speed is 83.3m/s .

<h3>What is speed ? </h3>

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The S.I unit is m/s . Speed is a scalar quantity it defines only magnitude not direction

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speed = distance /time

In case of Car A ,

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First we have convert the distance km to m

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A 1090 kg car has four 12.7 kg wheels. When the car is moving, what fraction of the total kinetic energy of the car is due to ro
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Answer:

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