Hello,
Here is your answer:
The proper answer to this question is option B "<span>chemical properties".
Here is how:
</span>Electrons determine a atoms chemical properties mainly what its made of.
Your answer is B.
If you need anymore help feel free to ask me!
Hope this helps!
Answer:

Explanation:
From the question we are told that
Mass 
Height 
Generally the equation for velocity before impact is is is mathematically given by



Generally the equation for Kinetic Energy is is mathematically given by




Answer:
The diameter of the bull-wheel is 3.82
Explanation:
Given that,
Velocity = 2.0 m/s
Angular velocity = 10 rev/m


We need to calculate the diameter of bull-wheel
Using formula of angular velocity


Put the value into the formula


The diameter of the bull-wheel



Hence, The diameter of the bull-wheel is 3.82 m.
Because you would fall so slow that you would not need one.