Determine the Universal Gravitational Constant (G).

G = 6.6675 x N/

Explanation:

From Newton's law of universal gravitation,

F =  .................. 1

Where F is the force of attraction, G is the universal gravitation constant, M is the mass of a massive object e.g earth, m is the mass of the smaller object e.g moon, r is the radius of the massive object.

Newton's second law states;

F = mg  ...................  2

F is the force, m is the mass of the object and g is the gravitational force on the object.

Equating equations 1 and 2 gives;

mg =

So that;

g =

⇒ G =

where: g = 9.81 m/, r = 6371 km, M = 5.972 x kg.

G =

  =

  = 6.6675 x N/

The Universal Gravitational Constant (G) is 6.6675 x N/.

answer: the direction of the wind is expressed as the direction from which the wind is blowing. for example, easterly winds blow from east to west, while westerly winds blow from west to east.

explanation:

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.