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, 22.06.2019 08:00, jjxt126

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

Answers: 1

continue

Physics, 22.06.2019 10:30, markfaerman5408

Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.

Answers: 3

continue

Physics, 22.06.2019 12:30, lanaasad7733

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.

Answers: 1

continue

Physics, 22.06.2019 13:30, brsglover8355

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.

Answers: 2

continue

Do you know the correct answer?

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