Which of the following would NOT be an example of an insulator? a Rubber gloves

b Plastic tubing

c Salt water(correct)

d Normal air

your answer is either C or D. it is most likely D

Explanation:

the reason why its not A or B is because it does not let electricity to pass threw if you look at a charger or a cord that has to be plugged into a wall you will notice that the outside has a type of rubber or plastic over the mental wires in the inside of the cord that's why A and B aren't the answer. The reason Why I'm not so sure about C is because it is and isn't a insulator so that's why I think that D is most likely the answer

ek = (m·v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) ·v2/2

ek = (200 + 250) ·2,32/2 = 450·5,29/2 = 1190,25 j