subject
Physics, 08.11.2019 09:31 natpiink

A) 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 5900 km on a side and 26 km deep and that the rock has an average mass density of 2800 kg/m^3. the continent is moving at the rate of about 4 cm/year. what is the mass of the continent. answer in units of kg.
b) what is the kinetic energy of the continent? answer in units of kg.
c) a jogger (of mass 80 kg) has the same kinetic energy as that of the continent. what would his speed be? answer in units of m/s.

ansver
Answers: 2

Another question on Physics

question
Physics, 21.06.2019 18:00
A9.8-g bullet is fired into a stationary block of wood having mass m = 5.04 kg. the bullet imbeds into the block. the speed of the bullet-plus-wood combination immediately after the collision is 0.609 m/s. what was the original speed of the bullet? (express your answer with four significant figures.)
Answers: 1
question
Physics, 21.06.2019 19:30
Why there is no inductive reactance in dc circuits
Answers: 1
question
Physics, 22.06.2019 00:00
Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?
Answers: 2
question
Physics, 22.06.2019 07:30
Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life
Answers: 3
You know the right answer?
A) the current theory of the structure of the earth, called plate tectonics, tells us that the conti...
Questions
question
World Languages, 01.07.2019 13:30
Questions on the website: 11473129