The correct answer is x-rays
The answer is C because the north pole of the magnet in the south pole of the magnet the move together
Answer:
The law of conservation of energy is the preserved form of energy.
Option (1) is correct that is the total amount of energy in the universe remains constant.Because energy is conserved.
Option (3) is correct since, it is conserved so, it can not be created or destroyed.
Option (4) Energy can change from one type to another like mechanical to electrical energy but it will remain conserved.
Option (5) is correct because in closed, isolated system energy is conserved.
Answer & Explanation:
<u>use the principle of conservation of momentum</u>
<u>take right as positive and left as negative</u>
<em>momentum is the product of mass and velocity</em>
(4 x 8) + (6 x -2) = (4 x -4) + (6 x Y)
32 - 12 = -16 + 6Y
20 + 16 = 6Y
Y = 6m/s
Final answer the velocity of the 6 Kg ball is 6m/s