the radius of earth is about 6.38 x10^3 km. A 7.20 x10^3 N spacecraft travels away from earth. What is the weight of the spacecraft at the following distances from Earth's surface? a) 6.38 x 10^3 km

Explanation:

g = Acceleration due to gravity =

w = Weight of spracecraft at the surface =

m = Mass of spracecraft

R = Radius of Earth =

h = Elevation =

G = Gravitational constant =

M = Mass of Earth =

From the gravitational law we have

The weight of the spacecraft at the given height is

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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