Answer:
C
Explanation:
The name of the rock is usually derived from the sediment grain size.
<span>Nuclei of u-238 atoms are </span><span>unstable and spontaneously emit alpha particles.</span>
Answer:
The tangential speed of the ball is 11.213 m/s
Explanation:
The radius is equal:
(ball rotates in a circle)
If the system is in equilibrium, the tension is:

Replacing:

Replacing:

The answer would be 27,000 Joules because (1/2) m v^2 =30*900 which equals 27,000 J