If the 78.0 kg astronaut were in a spacecraft 6r from the center of the earth, what would the astronaut's weight be on earth? 764.4 n760 n764 n in the spacecraft?

Explanation:

According to Newton's law of universal gravitation:

Where:  

is the module of the attraction force exerted between the Earth and the astronaut

is the universal gravitation constant.  

is the mass of the Earth and is the mass of the astronaut.  

is the distance between Earth and the astronaut (measured from the center of the planet).

So, the weight of the astronaut will be the attraction force exerted between the Earth and the astronaut.

  (1)

  (2)

  (3)  Weight of the astronaut on Earth

  (4)

  (5)

  (6)  Weight of the astronaut in the spacecraft at a distance 6R from the Earth center

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2