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Phantasy [73]
3 years ago
10

A student is watching a video in order to understand how convection in the mantle of the Earth occurs. The video shows rock risi

ng and sinking to make convection currents in the mantle. Which process is responsible for causing rock to rise? A. Rock is heated. B. Rock rapidly cools off. C. Rock increases in density. D. Rock undergoes intense pressure.
Physics
1 answer:
PSYCHO15rus [73]3 years ago
8 0

Answer:

A

Explanation:

Because of the convectional currents

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4 years ago
a lorry travels 3600m on a test track accelerating constantly at 3m/s squared from standstill. what is the final velocity (3 sig
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2as =v^{2} - u^{2} \\\\v^{2} = 2as + u^{2}

Then, the final velocity will be

v^{2} = 2 * 3 * 3600 + 0 = 21600\\ \\v=\sqrt{21600}=146.969 m/s

Thus,  the final velocity of the truck is found as 146.969 m/s.

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