Answer:
The answer to your question is: 66.7 % of Iron filings
Explanation:
Data
Mixture salt - iron filigs = 4.5 g
Iron filings mass = 3.0 g
Formula
Percent composition = (mass of solute/mass of solvent) x 100
Percent composition = (3.0 / 4.5 g) x 100
Percent composition = 66.7%
This is the flow! your answer can be found online
Mechanical energy is the total energy present in the system, which is addition of both potential energy and kinetic energy
In nature, Gravitational force is the weakest whereas Strong nuclear force is the strongest
In short, Your Answer would be option D
Hope this helps!