Im not 100% sure but i think its bromine.
Hope this helps ^_^
Answer:
Hey
The Gravitational force from the moon and the sun are aligned with the equator, if a sateite were to orbit horizontally it would quickly come out of sync.
It depends when you look at a pichture it could possibly help.
If the distance between two charges is halved, the electrical force between them increases by a factor 4.
In fact, the magnitude of the electric force between two charges is given by:
where
k is the Coulomb's constant
q1 and q2 are the two charges
r is the separation between the two charges
We see that the magnitude of the force F is inversely proportional to the square of the distance r. Therefore, if the radius is halved:
the magnitude of the force changes as follows:
so, the force increases by a factor 4.
Mass of the block = 2/g = 2/9.8 =0.204 kg.
Frictional force = mass * acceleration
a = F/ m where F is the frictional force = 2.4
a = 2.4/ 0.204 = 11.76 m/s^2