to see if its copatible with our environment or to see if there is any unkown element, otherwise i dont know
if wrong very sorry
1. 100N to the right
2. 10N to the left
3. 0N they are balanced
4. 0N they are balanced
Answer: 
Explanation:

Multiply by t on both sides.


Now divide by I to isolate t.


Answer:
A) Cations
Explanation:
a) Cations have a positive charge and are larger than their neutral counterparts!
b) Anions have a negative charge and are smaller than their neutral counterparts
c) Metals can have either a positive or negative charge making it either a cation or an anion
d) Carbon is an element and it can have a charge anywhere from +4 to -4
A good way to remember that cations are positive is to think that CATions are always PAWSitive! ^-^
Answer:
Kinetic energy is the energy of motion so to figure out that it’s not changing is if the object is still moving. If it’s staying still or is at rest, it is presenting potential energy, which is when energy is being stored inside the object.