The current theory of the structure of the earth, called plate tectonics, tells us what the continents are in constant motion. assume that the north american continent can be represented by a slab of rock 4700km on a side and 37km deep and that the rock has an average mass density of 2720kg/m^3. the continent is moving at the rate of about 4.6cm/year. a) what is the mass of the continent. b) what is the kinetic energy of the continent?

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s. calculate eddy’s power rating

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)