Pllsss help Quick!! A 0.013 kg rubber stopper attached to a 0.93 m string is swung in a circle. If the tension in the string is 0.70 N, what is the period of the stopper's revolution?

00.45 s
0.83 s
1.2 s
2.4 s

this is a good question! i'll do some research and come back when i have the answer!

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

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