The chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side. Balancing chemical equations is a process of trial and error.
Answer:
3.6m/s
Explanation:
The following data were obtained from the question:
Mass (m) = 0.5Kg
Spring constant (K) = 330N/m
Energy = 3.24J
Velocity (v) =..?
The velocity of the mass can be obtained as follow:
E = ½mv²
3.24 = ½ × 0.5 × v²
3.24 = 0.25 × v²
Divide both side by 0.25
v² = 3.24/0.25
Take the square root of both side
v = √(3.24/0.25)
v = 3.6m/s
Therefore, the speed of the mass is 3.6m/s
The Correct Answer is E) reflect light rays so they're parallel to each other.
