Two earth satellites, a and b, each of mass m, are to be launched into circular orbits about earth's center. satellite a is to orbit at an altitude of 6390 km. satellite b is to orbit at an altitude of 17300 km. the radius of earth reis 6370 km. (a) what is the ratio of the potential energy of satellite b to that of satellite a, in orbit

where

         Pa = Gravitational potential energy of satellite A

         Pb = Gravitational potential energy of satellite B

          G = gravitational constant

          Me = Mass of the earth

          Ma = Mass of satellite A

          Mb = Mass of satellite B

          Re = Radius of the earth

Pb/Pa = (-GMeMb/Re) / (-GMeMa/Re)

Pb/Pa =  Mb/Ma

Explanation:

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it