Plz

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 5850 km

on a side and 35 km deep and that the rock

has an average mass density of 2750 kg/m3

.

the continent is moving at the rate of about

3.2 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 78 kg) has the same kinetic

energy as that of the continent.

what would his speed be?

answer in units of m/s.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.