Answer:
Around 17,000,000 or a little more than that
They are the elements from scandium to copernicium. The elements between group 2 and group 3
Answer:
v = 16.49 m/s
Explanation:
Given that,
Length of the string, l = 1.15 m
The ball makes 137 complete turns each minute.
We know that, 1 turn = 6.28 rad
137 turns = 860.79 rad
1 min = 60 s

We need to find the tangential velocity of the ball. It can be given by

So, the tangential velocity of the ball is 16.49 m/s.
I think the answer is 4 carbon dioxide
Answer:
You take the atomic, or proton number of the element, and you subtract it from the element's mass number.