becuz The Tang dynasty, or Tang Empire, was an imperial dynasty of China that ruled from 618 to 907 AD, with an interregnum between 690 and 705. it capital wasChang'an. It has also got developed infrastructure's with powerful troops.
Answer:
The masses of the objects and the distance between them.
Step-by-step explanation:
The equation states:

and
is the masses of the objects
is the distance between the center of their masses.
Answer:
See answers below
Step-by-step explanation:
Find the diagram attached
To get AB, use the pythagoras theorem;
AB² = 12² + 9²
AB² = 144 + 81
AB² = 225
AB = √225
AB = 15
Since
Hypotenuse = AB
sin <A = BC/AB
Sin <A = 12/15
Sin <A = 4/5
<A = arcsin(0.8)
<A = 53.13degrees
Sin <B = AC/AB
Sin<B = 9/15
Sin <B = 0.6
<B = arcsin(0.6)
<B = 36.87degrees