Physics, 02.11.2020 08:40 cifjdhhfdu
The current theory of the structure of the Earth, called plate tectonics, tells us that the continents are in constant motion. Assume that the North American can be represented by a slab of rock 4000km on a side and 33 km deep and that the rock has an average mass density of 2690 kg/m^3. The continent is moving at the rate of about 2.4 cm/year.
a.) What is the mass of the continent?
b.) What is the kinetic energy of the continent?
c.) A jogger (of mass 75 kg) has the same kinetic energy as that of the continent. What would his speed be?
Answers: 2
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The current theory of the structure of the Earth, called plate tectonics, tells us that the continen...
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