Answer:
C. A baseball bat strikes a baseball.
Explanation:
Newton's second law of motion states that acceleration happens when force is applied on the mass.
<em>A baseball bat strikes a baseball is the best example of Newton's second law of motion because acceleration of the baseball is directly proportional to the force by which baseball bat hit it.</em>
Hence, the correct option is 'C. A baseball bat strikes a baseball.'
The basic unit of life, it can be seen wit microscopes
This is a good question. The short (but less satisfying) answer is: "because the hydrostatic pressure of oil at a certain depth depends on the height of the oil level, measured from that point." So, you can have a tiny amount of oil but arranged in a column that makes it very tall/high and get high pressure, and have same amount of oil spread so that the height is negligible to produce a negligible amount of pressure. The exact formula for pressure is P=r*h*g (r stands for the liquid density, h for height, and g for gravitational acceleration).
The long answer, but much more satisfying, goes through the derivation of this formula. I recommend searching for a good video explaining hydrostatic pressure. (I can't post links).
D. Homogeneous
These solutions look to be just one solution when combined.
Non ferrous metals such as aluminum, germanium, wood to wood contact, spinning pure distilled water, trees
