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# 1) 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 continent can be represented by a slab of rock 4050 km on a side and 29 km deep and that the rock has an average mass density of 2750 kg/m3 . the continent is moving at the rate of about 4.8 cm/year. what is the mass of the continent? answer in units of kg. 005 (part 2 of 3) 10.0 points what is the kinetic energy of the continent? answer in units of j. 006 (part 3 of 3) 10.0 points a jogger (of mass 63 kg) has the same kinetic energy as that of the continent. what would his speed be? answer in units of m/s.   ### Another question on Physics Physics, 21.06.2019 18:20
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Aof 4.90 l 8.5 g of at 3.00 k to of at a of 1.00 . to ( k). is ?
1) the current theory of the structure of the
earth, called plate tectonics, tells us that the...
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