A solution is a mixture composed of two or more substances which is always homogeneous. One substance dissolves in with the other substance making a solution.
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Answer: 
Explanation:
IMA stands for Ideal Mechanical advantage.
The IMA of pulley system can be defined as the ratio of output force to input force.
From the given pulley system,
The input force = 
The output force = 
Hence, IMA of the given pulley system,

Refractor, It's a refractor-esque telescope
Answer:
.5 grams
Explanation:
1 gram is equal to 1000 milligrams (mg)
Here are the answers:
1. False - Molecules is the smallest part of an element that behaves like the element.
2. False - The nucleus contains both protons and neutrons
3. True
4. True
5. A. Nucleus
6. D. Neutron
7. B. Protons and Neutrons
8. C. Electron
9. C. 6
10. C.6