Physics, 15.11.2019 22:31 yugbug44owwc7w

Me with this problem
part one:
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 4600 km. on a side and 36 km deep and that the rock has an average mass density of 2790 kg/m^3.
the continent is moving at the rate of about 1.6 cm/year.
what is the mass of the continent?
answer in units of kg.

part two:
what is the kinetic energy of the continent?
answer in units of j.

part three:
a jogger (of mass 72 kg) has the same kinetic
energy as that of the continent.
what would his speed be?
answer in units of m/s.

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 19:30, Jazminfun70

Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more

Answers: 1

continue

Physics, 22.06.2019 04:20, pippalotta

Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.

Answers: 3

continue

Physics, 22.06.2019 04:30, AShevel6767

In a system, when potential energy decreases, then entropy also decreases. true false

Answers: 3

continue

Physics, 22.06.2019 14:30, gus2006santos

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Answers: 2

continue

You know the right answer?

Me with this problem
part one:
the current theory of the structure of the
earth,...