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 4200 km on a side and 29 km deep and that the rockhas an average mass density of 2900 kg/m3.The continent is moving at the rate of about4.2 cm/year. A. What is the mass of the continent?B. What is the kinetic energy of the continent? C. A jogger (of mass 70 kg) has the same kinetic energy as that of the continent. What would his speed be?
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Physics, 22.06.2019 05:30, mlopezmanny5722
The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f. s. = 2 against bucklin
Answers: 3
Physics, 23.06.2019 00:30, ldelgado97
Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving
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The current theory of the structure of the Earth, called plate tectonics, tells us that the continen...
History, 11.12.2020 09:20